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What Anaesthesia Is Used for ICL Surgery?

Apr 7, 2026

If you are thinking about having ICL surgery in London, you might naturally wonder, “Will it hurt?” It is completely normal to feel nervous because eye surgery can sound intimidating, and the thought of discomfort can make anyone anxious. The reassuring news is that implantable collamer lens surgery is very precise and safe, and the type of anaesthesia used helps make the experience as comfortable as possible.

Anaesthesia during ICL surgery is designed to minimise pain and discomfort. Usually, eye drops are used to numb the surface of your eye. This means you stay awake during the procedure but should not feel any pain, only some mild pressure or movement.

If you feel particularly anxious, mild sedation can sometimes be offered. This helps you to feel relaxed without being fully unconscious. Your surgeon will discuss what is best for you, considering your comfort and medical history, so you can feel safe throughout the procedure.

Knowing what to expect can help you feel more confident on the day of your surgery. You will understand what happens before, during, and after the procedure, which can make the whole experience smoother. Most patients find the process straightforward and surprisingly comfortable when they are properly prepared.

Understanding ICL Surgery

Before looking at anaesthesia, it helps to understand what ICL surgery involves. An implantable collamer lens is placed inside your eye to correct vision problems such as short-sightedness, long-sightedness, or astigmatism. Unlike LASIK, which reshapes the cornea, ICL surgery adds a lens without removing any corneal tissue.

The lens works with your natural eye structures to improve vision, and the procedure is precise and delicate. Because your eye must remain very still, even small movements can affect the outcome. Feeling relaxed and comfortable is therefore essential for a safe and successful surgery.

This is where anaesthesia comes into play. It is carefully chosen to keep you comfortable, calm, and cooperative throughout the procedure. With the right anaesthesia, most patients find ICL surgery straightforward, safe, and surprisingly comfortable.

Topical Anaesthesia: Numbing Eye Drops

For most patients having ICL surgery, topical anaesthesia is the usual method. This involves the surgeon using specialised eye drops to temporarily numb the surface of your eye. The drops block the nerves in the area, so you do not feel pain during the procedure.

The advantages of topical anaesthesia are clear. It works quickly, is very effective, and carries a low risk. You remain awake and alert throughout the surgery, and most people report feeling only mild pressure or touch rather than pain. Modern anaesthetic drops are remarkable in how they can make your eye completely numb while keeping you fully aware.

The process itself is straightforward. Before the surgery begins, the surgeon applies the drops several times to ensure your eye is fully numb, which usually takes a few minutes. Once your eye is ready, the surgeon can make the tiny incisions needed to insert the collamer lens safely and precisely.

Sedation: Reducing Anxiety and Enhancing Comfort

While topical anaesthesia takes care of physical discomfort, it does not always address feelings of anxiety or nervousness. Some patients may feel particularly tense before and during surgery, and this is completely normal. For these individuals, mild sedation can be offered to help you feel more relaxed and at ease throughout the procedure.

Sedation is usually administered through a small intravenous injection and works quickly to calm your nerves. You remain awake but feel drowsy, relaxed, and comfortable, and many patients describe the sensation as being sleepy yet aware of what is happening. This can make the surgery feel much less stressful, especially for first-time patients or anyone sensitive to medical environments.

It is important to know that sedation is optional and tailored to your needs. Many patients undergo ICL surgery successfully with just numbing drops and feel perfectly comfortable. Your surgeon will discuss your individual preferences and medical history to determine whether sedation is appropriate, ensuring you feel confident and safe throughout the procedure.

What Anaesthesia Does Not Do

Anaesthesia plays a key role in making ICL surgery comfortable, but it’s important to understand its limits. Unlike general anaesthesia, it does not put you into a deep sleep. Patients remain awake, alert, and able to respond to the surgeon, which is crucial for safety and effective treatment. Understanding this helps manage expectations and reduces anxiety before the procedure.

  • Does not induce full sleep: Anaesthesia used in ICL surgery, whether topical or with mild sedation, keeps you awake. You will not experience the deep unconsciousness associated with general anaesthesia. This awareness allows the surgeon to communicate and ensures the procedure goes smoothly.
  • May involve sensations of pressure or movement: You might feel slight pressure or a sense of movement during the surgery. These sensations are normal and are not painful. They occur because the eye is being carefully manipulated to place the lens.
  • Awareness is necessary for safety: Being awake enables you to follow instructions, such as focusing on a light or keeping your eye steady. This cooperation is vital to achieving the best surgical outcome. The surgical team monitors and guides you throughout to maintain comfort and security.
  • Anxiety can be managed but not eliminated: Mild sedation can help reduce nervousness, but it does not remove awareness. You may still notice the surgical environment and interactions with the team. This conscious state ensures patient safety while keeping discomfort minimal.

In conclusion, anaesthesia in ICL surgery is designed to minimise pain and enhance comfort, not to render you unconscious. You will be awake and responsive, experiencing only minimal sensations that are carefully controlled. By knowing what to expect, patients can approach the surgery with confidence and a clear understanding of the process. Proper guidance from the surgical team ensures the experience is safe, smooth, and as comfortable as possible.

Patient Experience: Comfort and Safety

From the moment you enter the operating room until the procedure is complete, your comfort is a top priority. Modern ICL surgery usually takes about 20 to 30 minutes per eye, and most patients report feeling very little discomfort. Knowing what to expect can help you feel calm and confident on the day of your surgery.

During the procedure, several steps are taken to keep you comfortable. First, the surgeon will apply numbing drops and, if needed, a mild sedative. Your eye will then be cleaned and draped. Tiny incisions are made in the cornea, and although you may feel some pressure, there is no pain. The collamer lens is carefully inserted and positioned with precision to improve your vision.

After the lens is in place, the eye is gently rinsed, and protective shields may be applied. You will stay under observation for a short period before being allowed to go home. Any discomfort after surgery is usually mild, such as slight irritation or light sensitivity for a day or two. Managing this at home is straightforward, often involving lubricating drops and avoiding strenuous activity for your eyes.

Advantages of Topical Anaesthesia Over General Anaesthesia

Many patients wonder why ICL surgery is performed under topical anaesthesia rather than general anaesthesia. Understanding the benefits helps clarify why this approach is preferred. Topical anaesthesia keeps patients comfortable while minimising risks, speeding up recovery, and supporting precise surgical outcomes. This makes it the ideal choice for most patients undergoing ICL surgery.

  • Enhanced Safety: General anaesthesia carries greater risks, particularly for older adults or those with pre-existing health conditions. Topical anaesthesia significantly reduces these risks while still providing effective pain control. This safer approach is a key reason why it is the standard for ICL surgery.
  • Faster Recovery: Patients receiving topical anaesthesia can often leave the clinic shortly after the procedure. There is no need for prolonged post-operative monitoring associated with general anaesthesia. This allows patients to return to normal activities more quickly and comfortably.
  • Greater Surgical Precision: Surgeons benefit from having awake patients who can follow instructions, such as focusing on a light or keeping the eye steady. This cooperation ensures the lens is positioned accurately. Being conscious allows for better outcomes and reduces the likelihood of complications.
  • Reduced Overall Stress: Topical anaesthesia avoids the systemic side effects often linked to general anaesthesia, such as nausea or prolonged grogginess. Patients remain alert and calm, experiencing minimal disruption. This makes the entire surgical process smoother and more controlled.

In conclusion, topical anaesthesia provides a safer, faster, and more precise experience compared with general anaesthesia. It allows patients to stay awake, recover quickly, and assist in the procedure when needed. For most ICL surgeries, this approach eliminates the unnecessary risks of general anaesthesia while maintaining comfort and safety. Patients can therefore approach surgery with confidence and minimal stress.

Minimising Discomfort: Tips for Patients

If you want your ICL surgery to be as comfortable as possible, there are some practical steps you can take. Feeling relaxed can make a big difference, so try taking slow, deep breaths before and during the procedure. Reducing anxiety helps your eye remain steady and makes the experience more pleasant.

It is also important to follow your surgeon’s instructions carefully. They may ask you to look in certain directions during the procedure, and doing so precisely helps the surgery go more smoothly and quickly. If you are especially nervous, discussing mild sedation with your surgeon beforehand can provide extra reassurance.

Other simple steps can also improve your comfort. On the day of surgery, it is best to avoid caffeine or alcohol, as these can increase anxiety and affect your blood pressure. By taking these small precautions, you can make your ICL surgery experience easier, calmer, and more comfortable.

After Surgery: Managing Discomfort

Most patients experience only mild irritation rather than pain after ICL surgery. Common sensations include sensitivity to light, mild tearing or dryness, and slight itching or grittiness. These symptoms are usually temporary and tend to improve within a few days as your eyes begin to heal.

Your surgeon will provide eye drops to reduce inflammation and prevent infection, and it is important to follow all post-operative care instructions closely. Avoid rubbing your eyes, as this can interfere with healing and affect the lens placement. Taking care of your eyes during this period helps ensure a smooth recovery and reduces the risk of complications.

Many patients are pleasantly surprised at how quickly their vision stabilises. Clearer vision is often noticed within just a few days, making the recovery process relatively straightforward. The combination of minimal discomfort and rapid visual improvement is one of the reasons why ICL surgery is considered very patient-friendly.

Anaesthesia and Special Considerations

While anaesthesia for ICL surgery is generally safe, some patients require special attention due to unique health factors. Individual medical conditions can influence the choice and administration of anaesthesia. Understanding these considerations helps ensure the procedure remains both safe and comfortable. Open communication with your surgeon is essential for a tailored anaesthesia plan.

  • Allergies to Anaesthetic Agents: Though rare, some patients may have allergic reactions to topical anaesthetic drops. Surgeons carefully review medical histories to identify potential risks. Adjustments can then be made to prevent any adverse reactions during surgery.
  • Heart or Respiratory Conditions: Patients with cardiovascular or respiratory issues may need modified sedation or anaesthesia. This ensures vital signs remain stable throughout the procedure. Personalized planning reduces the risk of complications while maintaining patient comfort.
  • Previous Eye Surgery: Eyes that have undergone prior surgeries can be more sensitive. Anaesthesia is tailored to account for this increased sensitivity. This careful approach ensures the procedure is safe and minimally uncomfortable.
  • Importance of Open Communication: Sharing your complete medical history allows your surgical team to plan appropriately. Patients who communicate concerns can receive an anaesthesia approach that is both effective and safe. Collaboration helps optimise comfort and surgical outcomes.

In conclusion, anaesthesia for ICL surgery can be adapted to meet individual health needs. Factors such as allergies, heart or respiratory conditions, and prior eye surgeries are carefully considered. By working closely with the surgeon and providing full medical information, patients can be assured of a safe, personalised, and comfortable experience during their procedure.

The Role of the Surgical Team

The comfort you feel during ICL surgery depends on more than just anaesthesia. The surgical team plays a vital role in creating a calm and reassuring environment, helping you feel at ease throughout the procedure. Their presence and support can make a big difference to your overall experience.

From the nurse who guides you into the operating room to the surgeon performing the procedure, every member of the team is trained to monitor your comfort and anxiety. They pay attention to your needs, adjust the lighting, and provide verbal reassurance when needed. Their careful attention helps you stay relaxed and cooperative during the surgery.

The team’s approach also contributes to your safety. By keeping your eye steady and monitoring your reactions, they ensure the procedure is performed precisely and efficiently. This collaborative effort helps most patients feel calm, supported, and confident throughout their ICL surgery experience.

Common Misconceptions About Anaesthesia in ICL Surgery

Many patients worry unnecessarily about anaesthesia before ICL surgery. It is perfectly normal to feel anxious about any eye procedure, especially if it is your first time. Understanding the facts and clearing up common myths can help you approach the surgery with confidence rather than fear, making the overall experience calmer and less stressful.

One common misconception is that the surgery will be very painful. In reality, modern anaesthetic drops are highly effective, and most patients report feeling only mild pressure or touch rather than any true pain. Another frequent concern is that you will be unconscious during the procedure. Unless sedation is used, you remain fully awake, able to follow instructions, and aware of what is happening, which helps the surgeon perform the procedure safely and efficiently.

Some patients also worry that recovery will be slow or uncomfortable. With topical anaesthesia, most people can leave the clinic shortly after surgery and gradually resume normal, light activities almost immediately. Knowing what to expect and understanding how anaesthesia works can reduce unnecessary worry and help you feel more relaxed, supported, and reassured before, during, and after your ICL surgery.

Why Patient Education Matters

Knowing what to expect from anaesthesia can make a big difference in how comfortable you feel before and during ICL surgery. When you understand how numbing drops work, what mild sedation can do, and what sensations are normal during the procedure, you feel more in control and less anxious. This knowledge helps you approach the surgery with a sense of confidence rather than fear.

Many patients find that simply knowing they will not experience pain changes their mindset completely. Being aware of what will happen allows you to relax and cooperate more easily during the procedure. A calm and informed patient often makes the surgery smoother, both for themselves and the surgical team.

Patient education also helps you manage expectations after the surgery. When you understand what mild discomfort or temporary light sensitivity is normal, you are less likely to worry unnecessarily. Overall, being informed empowers you to take an active role in your care and contributes to a more positive surgical experience.

ICL Surgery in London: Your Next Steps

If you are thinking about ICL surgery in London, the first step is to book a consultation with your surgeon. During this appointment, your eyes will be carefully examined, and your surgeon will discuss the different anaesthesia options available. You will also have the opportunity to ask any questions and address any concerns you may have about the procedure.

This consultation is your chance to fully understand what the surgery involves. You can ask about the use of numbing eye drops and sedation, share your previous medical history or any existing eye conditions, and discuss how the procedure will be carried out. The surgeon will guide you through each step so that you know exactly what to expect on the day of your surgery.

By the end of the consultation, you should feel confident and well-informed. Understanding the surgical process, recovery timeline, and measures taken for your comfort and safety helps reduce anxiety. Being prepared and educated allows you to approach your ICL surgery with calmness and reassurance.

Preparing for Your ICL Procedure

Proper preparation is key to ensuring a smooth and comfortable ICL surgery experience. Taking simple steps before your procedure can reduce anxiety and help the surgical team focus on the operation itself. By planning ahead, you can make the process safer, easier, and less stressful. Being prepared also allows anaesthesia to work effectively without added complications.

  • Arrange transportation: If you receive sedation during the procedure, it’s advisable to have someone drive you home. This ensures safety while your body recovers from the mild sedative effects. Planning transportation in advance removes unnecessary stress on the day of surgery.
  • Wear comfortable clothing: Loose-fitting sleeves and minimal accessories make it easier for the surgical team to work. Comfortable clothing also helps you feel relaxed during the procedure. Simple adjustments can enhance overall comfort and efficiency.
  • Avoid eye makeup: Clean, makeup-free eyes reduce the risk of infection during surgery. This allows anaesthetic drops and surgical instruments to work effectively. Preparing your eyes in advance promotes a safer surgical environment.
  • Bring questions: Having a list of questions ensures you leave no concern unaddressed. Even small clarifications can significantly reduce anxiety. Open communication with your surgeon helps you feel more confident and informed.

In conclusion, thoughtful preparation sets the stage for a safer and more comfortable ICL surgery. By arranging transport, wearing suitable clothing, keeping your eyes clean, and asking questions, you can minimise stress and support the anaesthesia process. Being proactive ensures that both you and your surgical team can focus entirely on achieving the best possible outcome.

Long-Term Comfort and Care

Anaesthesia is only one part of a smooth and comfortable ICL surgery experience. Equally important is taking care of your eyes after the procedure to ensure optimal healing and long-term comfort. Following the guidance provided by your surgeon helps protect your eyes and maintain the clarity of your vision.

Using prescribed eye drops as instructed is essential to reduce inflammation and prevent infection. Attending all follow-up appointments allows your surgeon to monitor your healing and address any concerns promptly. Protecting your eyes from dust, rubbing, or bright sunlight during the initial recovery period also supports safe and comfortable healing.

By carefully following post-operative instructions, you give your eyes the best chance to recover quickly and comfortably. This helps ensure that the benefits of your ICL surgery are maximised and that your vision remains clear and stable in the long term. With proper care, most patients find that their eyes remain comfortable and healthy well beyond the initial recovery period.

FAQ:

1. What type of anaesthesia is used for ICL surgery?
Most ICL surgeries use topical anaesthesia, which involves numbing eye drops applied to the surface of the eye. These drops prevent pain while keeping you awake and alert. For patients who feel particularly anxious, mild sedation may be offered to help you relax, but full general anaesthesia is rarely needed.

2. Will I feel pain during the procedure?
With topical anaesthesia, pain is minimal or usually absent. You might feel some pressure, slight movement, or touch, which is normal and not painful. Most patients find the procedure surprisingly comfortable when they understand what to expect.

3. Can I choose sedation during ICL surgery?
Yes, mild sedation is optional and customised to your comfort. It is typically given through a small intravenous injection and helps you feel calm and drowsy without putting you fully to sleep. Your surgeon will assess whether sedation is suitable based on your anxiety level and medical history.

4. How long does ICL surgery take?
ICL surgery is generally quick, usually taking 20 to 30 minutes per eye. Anaesthesia keeps you comfortable and awake, so the procedure is smooth and stress-free. Many patients are surprised by how fast and straightforward it feels.

5. Is ICL surgery safe with just eye drops?
Yes, topical anaesthesia is highly effective and safe. Staying awake during surgery helps the surgeon position the lens accurately and reduces the risks associated with general anaesthesia. Patients can follow instructions and cooperate during the procedure, which improves outcomes.

6. What are the benefits of topical anaesthesia over general anaesthesia?
Topical anaesthesia offers several advantages. It reduces overall risk compared with general anaesthesia, allows for faster recovery so patients can leave the clinic soon after surgery, helps the surgeon achieve precise lens placement, and avoids side effects like grogginess or nausea. Patients remain alert and calm throughout the procedure.

7. What should I do to prepare for ICL surgery?
Preparation can make the experience smoother and more comfortable. Arrange transportation if you are having sedation, wear comfortable clothing, avoid eye makeup to reduce infection risk, and prepare any questions for your surgeon. Being ready in advance can help reduce anxiety and support a better surgical outcome.

8. What sensations are normal during ICL surgery?
You may notice slight pressure, gentle movement, or mild touch in your eye as the lens is inserted. These sensations are normal and do not cause pain. Anaesthesia ensures that the procedure remains comfortable and controlled.

9. What is the recovery like after ICL surgery?
Recovery is usually fast and comfortable. Mild irritation, light sensitivity, or a gritty feeling in the eyes is common for a few days. Using prescribed eye drops, following post-operative instructions, and avoiding rubbing the eyes helps the healing process and ensures the lens stays in place.

10. Are there special considerations for anaesthesia in certain patients?
Yes, some patients may require adjustments due to allergies to anaesthetic drops, heart or respiratory conditions, or previous eye surgeries. By providing your full medical history, your surgeon can tailor the anaesthesia plan to make the procedure safe and comfortable.

Final Thoughts: Confidence Through Comfort

ICL surgery can feel intimidating, but knowing how anaesthesia works through numbing drops and optional mild sedation makes the experience far more manageable. Preparing in advance, from arranging transport to keeping your eyes clean, supports the surgical team and helps you stay relaxed throughout the procedure. Recovery is usually quick, with only mild, temporary discomfort, and following post-operative instructions ensures smooth healing and optimal results.

If you’re considering ICL surgery in London, you can get in touch with us at London Cataract Centre. Being informed about your anaesthesia options and taking simple preparatory steps makes the surgery safe, efficient, and surprisingly comfortable, allowing you to approach vision correction with confidence and ease. Book your consultation today and experience ICL surgery with reassurance and clarity.

References:

  1. Zhang, H., Gong, R., Zhang, X. and Deng, Y. (2022) Analysis of perioperative problems related to intraocular Implantable Collamer Lens implantation, International Ophthalmology, 42(11), pp. 3625–3641. Available at: https://pubmed.ncbi.nlm.nih.gov/35731355/
  2. Meduri, A., De Maria, A., Forlini, M., De Salvo, G., Date, P., Mancini, M., Oliverio, G.W. and Aragona, P. (2021) Non‐Toxic Anesthesia for Cataract Surgery, Applied Sciences, 11(21), p. 10269. Available at: https://www.mdpi.com/2076-3417/11/21/10269
  3. Xiao, Y., et al. (2024) Comparison of pain between bilateral ICL surgeries in adult patients, Journal of Ophthalmic Surgery, PMC11022364. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC11022364/
  4. Kumar, C.M. (2013) Local anaesthesia for ocular surgery, Anaesthesia & Intensive Care Medicine, 14(11), pp. 580–584. Available at: https://www.sciencedirect.com/science/article/abs/pii/S1472029913003068
  5. Huang, T., Zhang, H. and Li, K. (2024) Assessment of clinical efficacy and safety of ICL implantation in patients with relatively shallow anterior chamber depth, Heliyon. Available at: https://www.sciencedirect.com/science/article/pii/S2405844024158227