Metformin is one of the most commonly prescribed medications for people with type 2 diabetes. It helps lower blood sugar levels by improving how your body responds to insulin and reducing the amount of sugar your liver releases. It\u2019s often used as a first-line treatment and may be taken on its own or with other medications.<\/p>\n\n\n\n
Its popularity comes down to its effectiveness and low risk of causing low blood sugar on its own. But when you\u2019re heading into surgery\u2014especially one like cataract removal, which may involve fasting, anaesthesia, and recovery\u2014your metformin use needs to be looked at carefully. That\u2019s because your body\u2019s response to stress, fasting, and changes in routine can all affect your blood sugar and your risk for certain rare complications.<\/p>\n\n\n\n
Cataract Surgery: Why Diabetic Patients Need a Tailored Approach<\/strong><\/h2>\n\n\n\n![\"\"](\"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-content\/uploads\/2025\/03\/diabetes-1024x554.webp\")
<\/figure>\n\n\n\nFor people with diabetes, cataract surgery requires extra planning. That\u2019s because diabetes can affect the eye in several ways\u2014not just through cataracts, but also through diabetic retinopathy, macular oedema, and slower healing. This means your ophthalmologist needs to assess your retina carefully before surgery and make sure there are no signs of active disease that could interfere with your visual outcome.<\/p>\n\n\n\n
If you\u2019re on metformin, the team will also consider your kidney function, your risk for lactic acidosis (a rare but serious complication), and how stable your blood sugar levels are in general. All of this helps ensure your operation goes smoothly and your recovery is as uneventful as possible.<\/p>\n\n\n\n
Should You Stop Taking Metformin Before Cataract Surgery?<\/strong><\/h2>\n\n\n\nThis is one of the most common questions diabetic patients ask\u2014and the answer depends on several factors. In some cases, your surgical team may advise you to temporarily stop metformin for a short time before and after the surgery. The reason? During the stress of surgery or if you\u2019re receiving contrast dye or certain anaesthetics, there\u2019s a very small risk of lactic acidosis. It\u2019s rare, but your care team won\u2019t take chances.<\/p>\n\n\n\n
However, for most cataract surgeries performed under local anaesthetic and without intravenous contrast, this risk is minimal. That means many patients can continue metformin right through the process, though your surgeon or anaesthetist may adjust the timing or dose around the day of surgery.<\/p>\n\n\n\n
The Role of Kidney Function in the Decision<\/strong><\/h2>\n\n\n\nOne key reason metformin might be paused is your kidney function. If your kidneys aren\u2019t working optimally, metformin can build up in your system and increase the risk of lactic acidosis. Cataract surgery itself is relatively low stress on the kidneys, but if you\u2019re also dehydrated from fasting or have had a recent contrast scan, your team may recommend a temporary pause to protect your health.<\/p>\n\n\n\n
Your kidney function is typically monitored through a test called eGFR (estimated glomerular filtration rate). If your eGFR is lower than 30 ml\/min, most guidelines recommend avoiding metformin. But if your kidney function is stable and you\u2019re otherwise healthy, the risk is very low.<\/p>\n\n\n\n
Anaesthetic Considerations for Metformin Users<\/strong><\/h2>\n\n\n\nMost cataract surgeries in the UK are performed using local anaesthesia\u2014either eye drops or a small injection near the eye. This significantly reduces the risk of complications related to general anaesthesia or drug interactions. Still, your anaesthetist or surgical team will want to know if you\u2019re taking metformin and other diabetes medications.<\/p>\n\n\n\n
If sedation is used or if you\u2019re having surgery on both eyes in a single session, your team may be more cautious with your diabetes medications. You’ll be given clear instructions about when to stop eating, how to take your usual pills, and what to expect during recovery.<\/p>\n\n\n\n
Managing Blood Sugar Around the Time of Surgery<\/strong><\/h2>\n\n\n\nSurgery can be stressful on the body\u2014even a quick day procedure like cataract removal. This stress can raise your blood sugar levels. On the other hand, fasting before surgery or reduced food intake afterwards can lower your levels, especially if you\u2019re still taking your usual diabetes medications.<\/p>\n\n\n\n
That\u2019s why blood sugar monitoring is so important around the time of surgery. You\u2019ll likely be asked to check your glucose levels more frequently and may be advised to adjust your medications slightly depending on your eating pattern. Your GP or diabetes nurse may also be involved in helping you plan the safest approach.<\/p>\n\n\n\n
What Happens After Surgery for People Taking Metformin?<\/strong><\/h2>\n\n\n\n![\"\"](\"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-content\/uploads\/2025\/07\/Surgery-17-1024x409.webp\")
<\/figure>\n\n\n\nOnce your surgery is complete, the focus shifts to healing\u2014and that includes keeping your blood sugar levels stable. High blood sugar can slow wound healing and increase the risk of infection, so keeping it in check is important for your eye recovery. Most people can resume their usual metformin dose quite soon after surgery, unless there are complications.<\/p>\n\n\n\n
You may notice some temporary blurry vision or mild discomfort, but these are normal. Your care team will give you a full aftercare plan, including how to restart your medications, how often to monitor your glucose, and when to come back for follow-up.<\/p>\n\n\n\n
Eye Healing in Diabetic Patients: What\u2019s Different?<\/strong><\/h2>\n\n\n\nEven with good diabetes control, healing from cataract surgery can sometimes be slower in diabetic patients. This is especially true if you\u2019ve had diabetes for many years, or if you\u2019ve had complications like retinopathy or macular oedema. That\u2019s why close monitoring is essential.<\/p>\n\n\n\n
If any swelling or inflammation occurs in the retina, your doctor may prescribe anti-inflammatory eye drops or even injections to protect your sight. Having diabetes doesn\u2019t mean your outcome will be poor\u2014but it does mean your surgeon will keep a closer watch and may personalise your aftercare a little more.<\/p>\n\n\n\n
Communication Is Key: Coordinating Your Medical Team<\/strong><\/h2>\n\n\n\nOne of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/figure>\n\n\n\nFor people with diabetes, cataract surgery requires extra planning. That\u2019s because diabetes can affect the eye in several ways\u2014not just through cataracts, but also through diabetic retinopathy, macular oedema, and slower healing. This means your ophthalmologist needs to assess your retina carefully before surgery and make sure there are no signs of active disease that could interfere with your visual outcome.<\/p>\n\n\n\n
If you\u2019re on metformin, the team will also consider your kidney function, your risk for lactic acidosis (a rare but serious complication), and how stable your blood sugar levels are in general. All of this helps ensure your operation goes smoothly and your recovery is as uneventful as possible.<\/p>\n\n\n\n
Should You Stop Taking Metformin Before Cataract Surgery?<\/strong><\/h2>\n\n\n\nThis is one of the most common questions diabetic patients ask\u2014and the answer depends on several factors. In some cases, your surgical team may advise you to temporarily stop metformin for a short time before and after the surgery. The reason? During the stress of surgery or if you\u2019re receiving contrast dye or certain anaesthetics, there\u2019s a very small risk of lactic acidosis. It\u2019s rare, but your care team won\u2019t take chances.<\/p>\n\n\n\n
However, for most cataract surgeries performed under local anaesthetic and without intravenous contrast, this risk is minimal. That means many patients can continue metformin right through the process, though your surgeon or anaesthetist may adjust the timing or dose around the day of surgery.<\/p>\n\n\n\n
The Role of Kidney Function in the Decision<\/strong><\/h2>\n\n\n\nOne key reason metformin might be paused is your kidney function. If your kidneys aren\u2019t working optimally, metformin can build up in your system and increase the risk of lactic acidosis. Cataract surgery itself is relatively low stress on the kidneys, but if you\u2019re also dehydrated from fasting or have had a recent contrast scan, your team may recommend a temporary pause to protect your health.<\/p>\n\n\n\n
Your kidney function is typically monitored through a test called eGFR (estimated glomerular filtration rate). If your eGFR is lower than 30 ml\/min, most guidelines recommend avoiding metformin. But if your kidney function is stable and you\u2019re otherwise healthy, the risk is very low.<\/p>\n\n\n\n
Anaesthetic Considerations for Metformin Users<\/strong><\/h2>\n\n\n\nMost cataract surgeries in the UK are performed using local anaesthesia\u2014either eye drops or a small injection near the eye. This significantly reduces the risk of complications related to general anaesthesia or drug interactions. Still, your anaesthetist or surgical team will want to know if you\u2019re taking metformin and other diabetes medications.<\/p>\n\n\n\n
If sedation is used or if you\u2019re having surgery on both eyes in a single session, your team may be more cautious with your diabetes medications. You’ll be given clear instructions about when to stop eating, how to take your usual pills, and what to expect during recovery.<\/p>\n\n\n\n
Managing Blood Sugar Around the Time of Surgery<\/strong><\/h2>\n\n\n\nSurgery can be stressful on the body\u2014even a quick day procedure like cataract removal. This stress can raise your blood sugar levels. On the other hand, fasting before surgery or reduced food intake afterwards can lower your levels, especially if you\u2019re still taking your usual diabetes medications.<\/p>\n\n\n\n
That\u2019s why blood sugar monitoring is so important around the time of surgery. You\u2019ll likely be asked to check your glucose levels more frequently and may be advised to adjust your medications slightly depending on your eating pattern. Your GP or diabetes nurse may also be involved in helping you plan the safest approach.<\/p>\n\n\n\n
What Happens After Surgery for People Taking Metformin?<\/strong><\/h2>\n\n\n\n<\/figure>\n\n\n\nOnce your surgery is complete, the focus shifts to healing\u2014and that includes keeping your blood sugar levels stable. High blood sugar can slow wound healing and increase the risk of infection, so keeping it in check is important for your eye recovery. Most people can resume their usual metformin dose quite soon after surgery, unless there are complications.<\/p>\n\n\n\n
You may notice some temporary blurry vision or mild discomfort, but these are normal. Your care team will give you a full aftercare plan, including how to restart your medications, how often to monitor your glucose, and when to come back for follow-up.<\/p>\n\n\n\n
Eye Healing in Diabetic Patients: What\u2019s Different?<\/strong><\/h2>\n\n\n\nEven with good diabetes control, healing from cataract surgery can sometimes be slower in diabetic patients. This is especially true if you\u2019ve had diabetes for many years, or if you\u2019ve had complications like retinopathy or macular oedema. That\u2019s why close monitoring is essential.<\/p>\n\n\n\n
If any swelling or inflammation occurs in the retina, your doctor may prescribe anti-inflammatory eye drops or even injections to protect your sight. Having diabetes doesn\u2019t mean your outcome will be poor\u2014but it does mean your surgeon will keep a closer watch and may personalise your aftercare a little more.<\/p>\n\n\n\n
Communication Is Key: Coordinating Your Medical Team<\/strong><\/h2>\n\n\n\nOne of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
One key reason metformin might be paused is your kidney function. If your kidneys aren\u2019t working optimally, metformin can build up in your system and increase the risk of lactic acidosis. Cataract surgery itself is relatively low stress on the kidneys, but if you\u2019re also dehydrated from fasting or have had a recent contrast scan, your team may recommend a temporary pause to protect your health.<\/p>\n\n\n\n
Your kidney function is typically monitored through a test called eGFR (estimated glomerular filtration rate). If your eGFR is lower than 30 ml\/min, most guidelines recommend avoiding metformin. But if your kidney function is stable and you\u2019re otherwise healthy, the risk is very low.<\/p>\n\n\n\n
Anaesthetic Considerations for Metformin Users<\/strong><\/h2>\n\n\n\nMost cataract surgeries in the UK are performed using local anaesthesia\u2014either eye drops or a small injection near the eye. This significantly reduces the risk of complications related to general anaesthesia or drug interactions. Still, your anaesthetist or surgical team will want to know if you\u2019re taking metformin and other diabetes medications.<\/p>\n\n\n\n
If sedation is used or if you\u2019re having surgery on both eyes in a single session, your team may be more cautious with your diabetes medications. You’ll be given clear instructions about when to stop eating, how to take your usual pills, and what to expect during recovery.<\/p>\n\n\n\n
Managing Blood Sugar Around the Time of Surgery<\/strong><\/h2>\n\n\n\nSurgery can be stressful on the body\u2014even a quick day procedure like cataract removal. This stress can raise your blood sugar levels. On the other hand, fasting before surgery or reduced food intake afterwards can lower your levels, especially if you\u2019re still taking your usual diabetes medications.<\/p>\n\n\n\n
That\u2019s why blood sugar monitoring is so important around the time of surgery. You\u2019ll likely be asked to check your glucose levels more frequently and may be advised to adjust your medications slightly depending on your eating pattern. Your GP or diabetes nurse may also be involved in helping you plan the safest approach.<\/p>\n\n\n\n
What Happens After Surgery for People Taking Metformin?<\/strong><\/h2>\n\n\n\n<\/figure>\n\n\n\nOnce your surgery is complete, the focus shifts to healing\u2014and that includes keeping your blood sugar levels stable. High blood sugar can slow wound healing and increase the risk of infection, so keeping it in check is important for your eye recovery. Most people can resume their usual metformin dose quite soon after surgery, unless there are complications.<\/p>\n\n\n\n
You may notice some temporary blurry vision or mild discomfort, but these are normal. Your care team will give you a full aftercare plan, including how to restart your medications, how often to monitor your glucose, and when to come back for follow-up.<\/p>\n\n\n\n
Eye Healing in Diabetic Patients: What\u2019s Different?<\/strong><\/h2>\n\n\n\nEven with good diabetes control, healing from cataract surgery can sometimes be slower in diabetic patients. This is especially true if you\u2019ve had diabetes for many years, or if you\u2019ve had complications like retinopathy or macular oedema. That\u2019s why close monitoring is essential.<\/p>\n\n\n\n
If any swelling or inflammation occurs in the retina, your doctor may prescribe anti-inflammatory eye drops or even injections to protect your sight. Having diabetes doesn\u2019t mean your outcome will be poor\u2014but it does mean your surgeon will keep a closer watch and may personalise your aftercare a little more.<\/p>\n\n\n\n
Communication Is Key: Coordinating Your Medical Team<\/strong><\/h2>\n\n\n\nOne of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Surgery can be stressful on the body\u2014even a quick day procedure like cataract removal. This stress can raise your blood sugar levels. On the other hand, fasting before surgery or reduced food intake afterwards can lower your levels, especially if you\u2019re still taking your usual diabetes medications.<\/p>\n\n\n\n
That\u2019s why blood sugar monitoring is so important around the time of surgery. You\u2019ll likely be asked to check your glucose levels more frequently and may be advised to adjust your medications slightly depending on your eating pattern. Your GP or diabetes nurse may also be involved in helping you plan the safest approach.<\/p>\n\n\n\n
What Happens After Surgery for People Taking Metformin?<\/strong><\/h2>\n\n\n\n<\/figure>\n\n\n\nOnce your surgery is complete, the focus shifts to healing\u2014and that includes keeping your blood sugar levels stable. High blood sugar can slow wound healing and increase the risk of infection, so keeping it in check is important for your eye recovery. Most people can resume their usual metformin dose quite soon after surgery, unless there are complications.<\/p>\n\n\n\n
You may notice some temporary blurry vision or mild discomfort, but these are normal. Your care team will give you a full aftercare plan, including how to restart your medications, how often to monitor your glucose, and when to come back for follow-up.<\/p>\n\n\n\n
Eye Healing in Diabetic Patients: What\u2019s Different?<\/strong><\/h2>\n\n\n\nEven with good diabetes control, healing from cataract surgery can sometimes be slower in diabetic patients. This is especially true if you\u2019ve had diabetes for many years, or if you\u2019ve had complications like retinopathy or macular oedema. That\u2019s why close monitoring is essential.<\/p>\n\n\n\n
If any swelling or inflammation occurs in the retina, your doctor may prescribe anti-inflammatory eye drops or even injections to protect your sight. Having diabetes doesn\u2019t mean your outcome will be poor\u2014but it does mean your surgeon will keep a closer watch and may personalise your aftercare a little more.<\/p>\n\n\n\n
Communication Is Key: Coordinating Your Medical Team<\/strong><\/h2>\n\n\n\nOne of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/figure>\n\n\n\nOnce your surgery is complete, the focus shifts to healing\u2014and that includes keeping your blood sugar levels stable. High blood sugar can slow wound healing and increase the risk of infection, so keeping it in check is important for your eye recovery. Most people can resume their usual metformin dose quite soon after surgery, unless there are complications.<\/p>\n\n\n\n
You may notice some temporary blurry vision or mild discomfort, but these are normal. Your care team will give you a full aftercare plan, including how to restart your medications, how often to monitor your glucose, and when to come back for follow-up.<\/p>\n\n\n\n
Eye Healing in Diabetic Patients: What\u2019s Different?<\/strong><\/h2>\n\n\n\nEven with good diabetes control, healing from cataract surgery can sometimes be slower in diabetic patients. This is especially true if you\u2019ve had diabetes for many years, or if you\u2019ve had complications like retinopathy or macular oedema. That\u2019s why close monitoring is essential.<\/p>\n\n\n\n
If any swelling or inflammation occurs in the retina, your doctor may prescribe anti-inflammatory eye drops or even injections to protect your sight. Having diabetes doesn\u2019t mean your outcome will be poor\u2014but it does mean your surgeon will keep a closer watch and may personalise your aftercare a little more.<\/p>\n\n\n\n
Communication Is Key: Coordinating Your Medical Team<\/strong><\/h2>\n\n\n\nOne of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
One of the most important things you can do as a diabetic patient is keep all your medical providers in the loop. That includes your GP, ophthalmologist, diabetes nurse, and anyone else involved in your care. Cataract surgery may seem like a small event, but it touches on several areas of your health\u2014so coordination matters.<\/p>\n\n\n\n
Bring a full list of your medications to your pre-surgery assessment and be open about your blood sugar patterns, recent lab results, and any concerns you have. This allows your surgeon to plan the safest and most effective approach for your unique situation.<\/p>\n\n\n\n
FAQs: Metformin and Cataract Surgery<\/strong><\/h2>\n\n\n\n\n- Should I stop taking metformin before cataract surgery?<\/strong>
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n- Why does kidney function matter when taking metformin before surgery?<\/strong>
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n- What happens if I skip metformin before surgery? Will my blood sugar rise too much?<\/strong>
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n- Can metformin affect anaesthesia during cataract surgery?<\/strong>
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n- Will I need to fast before cataract surgery if I\u2019m diabetic?<\/strong>
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n- What signs should I watch for after surgery if I\u2019m taking metformin?<\/strong>
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n- Is it safe to restart metformin right after surgery?<\/strong>
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n- Does metformin affect eye healing after cataract surgery?<\/strong>
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n- Can I take other diabetes medications during the time of surgery?<\/strong>
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n- Will cataract surgery improve my vision if I have diabetic retinopathy?<\/strong>
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\nFinal Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
In many cases, you won\u2019t need to stop metformin before cataract surgery, especially if you’re having the procedure under local anaesthetic without intravenous contrast. However, your doctor may advise a temporary pause if you have reduced kidney function or if the surgery involves fasting, sedation, or other medications that could increase the risk of lactic acidosis. It\u2019s best to follow personalised advice from your surgical team, who will base their recommendations on your full medical history.<\/li>\n\n\n\n
Metformin is processed through the kidneys, and if your kidney function is reduced, the medication can build up in your system. This increases the rare but serious risk of a complication called lactic acidosis, which is why your eGFR (a measure of kidney health) is checked before surgery. If your kidney function is good, you can usually continue metformin safely, but if it\u2019s low, your team may recommend stopping it for a short period around your operation.<\/li>\n\n\n\n
Missing a dose or two of metformin is unlikely to cause a major problem, especially if your diabetes is generally well controlled. Your blood sugar may rise slightly, but this is often temporary and manageable. Your medical team will monitor your levels closely and, if needed, adjust other medications to maintain stability. It’s always safer to follow surgical instructions than to risk complications by taking medications that could interfere with anaesthesia or kidney function.<\/li>\n\n\n\n
Metformin itself doesn\u2019t directly interact with local anaesthesia, which is what most cataract surgeries use. However, concerns can arise if intravenous contrast dye or general anaesthesia is planned, as these factors can put more strain on the kidneys. Although this is rarely relevant for routine cataract surgery, your anaesthetist still needs to know about all your medications so they can assess any potential risks and adjust your care accordingly.<\/li>\n\n\n\n
Yes, even as a diabetic patient, you may be asked to fast for several hours before your procedure, depending on the anaesthesia used. This helps reduce the risk of complications during surgery. You\u2019ll be given clear instructions on when to stop eating and whether to take your morning dose of metformin or other medications. Managing your blood sugar while fasting can be tricky, so your care team will help you create a safe plan tailored to your needs.<\/li>\n\n\n\n
After surgery, you should watch for any signs of low blood sugar, such as shakiness, dizziness, or confusion\u2014especially if you\u2019re eating less than usual. Also keep an eye on your vision and eye comfort, looking out for increasing redness, pain, or discharge, which could suggest infection. Unusual tiredness, muscle cramps, or breathing difficulties should be reported right away, as these could indicate rare complications like lactic acidosis. Staying in touch with your doctor during recovery is key.<\/li>\n\n\n\n
In most cases, you can restart metformin within 24 to 48 hours after cataract surgery, as long as there were no complications and your kidney function remains stable. Your doctor will usually confirm this at your follow-up or in your discharge instructions. Restarting too soon without the green light could pose a risk if you’ve been dehydrated or had any changes in kidney function, so it\u2019s important to wait for official approval before resuming the medication.<\/li>\n\n\n\n
Metformin does not directly interfere with healing of the eye following cataract surgery. However, poorly controlled blood sugar levels\u2014regardless of which diabetes medication you’re on\u2014can slow wound healing and increase the risk of infection. That\u2019s why your recovery plan will include strategies for maintaining steady glucose levels during the healing process. Staying on top of your diabetes care will give your eyes the best chance of a smooth recovery.<\/li>\n\n\n\n
Yes, but you may need to adjust the dose or timing of certain medications depending on your eating schedule and fasting instructions. For instance, insulin or sulfonylureas may increase your risk of low blood sugar if taken without food. Your diabetes nurse, GP, or anaesthetist will guide you on which medications to take, skip, or reduce in the days around your operation. It\u2019s important not to guess\u2014always follow the personalised plan you’re given.<\/li>\n\n\n\n
It depends on the severity of your diabetic retinopathy. If your retina is still relatively healthy, cataract surgery can lead to a significant improvement in vision. However, if there\u2019s advanced retinal damage, macular oedema, or active bleeding, the benefits may be more limited. Your eye surgeon will perform detailed scans of the retina before surgery and give you a clear, honest outlook based on your individual eye health. You\u2019ll also be monitored more closely after surgery if retinopathy is present.<\/li>\n<\/ol>\n\n\n\n
Final Thoughts: Metformin and Cataract Surgery Can Work Well Together<\/strong><\/h2>\n\n\n\nIf you\u2019re managing type 2 diabetes with metformin and planning cataract surgery, the most important thing to remember is that a safe and successful outcome is absolutely achievable. With clear communication, careful planning, and proper monitoring of your blood sugar and kidney function, you can expect a smooth experience and meaningful visual improvement.<\/p>\n\n\n\n
At London Cataract Centre<\/strong><\/a>, we routinely care for patients with diabetes and tailor every step of the journey\u2014from pre-operative assessments to recovery plans\u2014to your individual needs. Our team works closely with your GP and diabetes care team to ensure everything from medication timing to anaesthetic planning is handled with precision.<\/p>\n\n\n\nYou don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
You don\u2019t have to navigate this process alone. Whether you\u2019re wondering about when to stop metformin or how to monitor your glucose during recovery, we\u2019re here to guide you through it all with expert, patient-centred care.<\/p>\n\n\n\n
References<\/strong><\/h2>\n\n\n\n\n- Li, J., Yang, J., Liu, Z., & Li, X. (2025).<\/strong> Effect of metformin on the level of aqueous humour inflammatory cytokines in patients with cataract<\/em>. Scientific Reports<\/em>, 15:\u202f3672. Available at: https:\/\/www.nature.com\/articles\/s41598-024-81424-9<\/a><\/li>\n\n\n\n
- Patnaik, J.<\/strong>\u202fL., Christopher, K.<\/strong>\u202fL., Pedler, M.<\/strong>\u202fG., & Petrash, J.<\/strong>\u202fM. (2021).<\/strong> The protective effect of metformin use on early Nd<\/em> laser capsulotomy<\/em>. Investigative Ophthalmology & Visual Science<\/em>, 62(10):\u202f24. Available at: https:\/\/pubmed.ncbi.nlm.nih.gov\/34415985\/<\/a><\/li>\n\n\n\n
- Sadeghi, E. (2025).<\/strong> An update on ocular effects of antidiabetic medications<\/em>. Ophthalmic Research Journal<\/em>. Available at: https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0039625725000190<\/a><\/li>\n\n\n\n
- Xu, W., Liang, Y., Zhu, Y., Sun, T., Yuan, Z., & Han, X. (2023).<\/strong> Proteomic study of aqueous humour in diabetic patients with cataracts using TMT and HPLC\u2011MS\/MS<\/em>. BMC Ophthalmology<\/em>, 23:\u202f435. Available at: https:\/\/bmcophthalmol.biomedcentral.com\/articles\/10.1186\/s12886-023-03162-2<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
If you’re taking metformin for type 2 diabetes and your doctor has recommended cataract surgery, it’s normal to have a lot of questions. How will your diabetes affect the procedure? Should you stop taking your medication beforehand? Will your blood sugar stay stable during recovery? These are important concerns\u2014and the good news is that with […]<\/p>\n","protected":false},"author":2,"featured_media":3142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=3141"}],"version-history":[{"count":1,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions"}],"predecessor-version":[{"id":3143,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/posts\/3141\/revisions\/3143"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media\/3142"}],"wp:attachment":[{"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=3141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=3141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.londoncataractcentre.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=3141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}