How ICL Surgery Works Step by Step: A London Patient Guide

06 Feb 2026

If you're considering improving your vision through ICL (Implantable Collamer Lens) surgery in London, you’re not alone. This innovative procedure is a game-changer for those with high prescriptions or those who may not qualify for laser eye surgery. At Optimal Vision, we understand that understanding the process is crucial, and we’re here to guide you step by step.

What is ICL Surgery?

ICL surgery involves placing a thin lens inside your eye to correct refractive errors such as myopia (short-sightedness), hyperopia (long-sightedness), and astigmatism. Unlike the more well-known laser procedures, ICL surgery is reversible and doesn’t require any alteration to your cornea. This can provide peace of mind for many patients.

Why Choose ICL Surgery?

Choosing ICL surgery in London has several advantages:

High Precision: It often provides clearer vision due to the advanced technology used.
Quick Recovery: Most patients experience minimal downtime and can return to their daily activities quickly.
Reversible: If necessary, ICLs can be removed, offering flexibility for future changes in vision.

Step 1: Initial Consultation

Your journey begins with an initial consultation at our clinic. We will assess your vision and conduct a thorough eye examination to determine whether you are a suitable candidate for ICL surgery.
During this consultation, our experienced team will review your medical history, discuss your visual needs, and answer any questions you may have regarding the procedure. At Optimal Vision, we pride ourselves on providing a personalised experience to ensure your comfort and understanding.

Key Questions to Ask

What are the potential risks and benefits of ICL surgery?
How will my vision improve?
What is the recovery process like?

Step 2: Pre-operative Tests

If you qualify for ICL surgery, we’ll schedule additional tests to measure your eye’s dimensions and map your vision needs.

These tests ensure that we select the correct lens for your eye. The precision of these measurements is critical for optimal visual outcomes. Our state-of-the-art technology, such as the OCT 3D Scan, allows for detailed assessments of your eye structure.

Step 3: Discussing the Procedure

Once your tests are complete, we will explain the surgical process in detail. ICL surgery is relatively quick and typically performed as an outpatient procedure.

What to Expect During Surgery

Anaesthetic: We use local anaesthetic eye drops to ensure you feel no pain during the procedure.
Lens Insertion: The surgeon will make a small incision in your eye and insert the ICL. This is done with great precision, ensuring minimal disturbance to surrounding tissues.
Final Adjustments: The lens is then positioned correctly within your eye. The entire process usually takes less than 30 minutes.

Step 4: The Surgical Day

On the day of your surgery, we recommend that you arrange for someone to accompany you to and from the clinic. Although you will likely feel fine after the procedure, it's best to have a friend or family member with you for support.

What to Bring
A valid form of ID
Comfortable clothing
Any necessary medications

Step 5: Recovery Phase

After ICL surgery, you will rest in our recovery area before being discharged. Here’s what you can expect:

Immediate Care: You’ll likely notice improvement in your vision shortly after the procedure.
Post-operative Instructions: We will provide guidelines on medication use, proper eye care, and activities to avoid in the days following your surgery.
Follow-up Appointment: You will schedule a follow-up visit to check your healing process and ensure that your vision is stabilising as expected.

What to Watch For

While ICL surgery is low-risk, it’s essential to watch for any unusual symptoms, such as increased pain, redness, or changes in vision. If you experience any of these, contact us immediately.

Step 6: Long-term Care

One of the benefits of ICL surgery is that it allows for normal activities relatively quickly. However, ongoing care is essential for maintaining optimal vision health:

Regular Check-ups: We recommend annual eye examinations to monitor your vision and eye health.
Lifestyle Adjustments: Adopting healthy eye habits, such as limiting screen time and ensuring proper lighting, can contribute to your long-term vision health.

Why Choose Optimal Vision for ICL Surgery in London?

At Optimal Vision, our experienced eye surgeons, including Dr. Amir Mani, have a proven track record of performing successful eye surgeries, including ICL procedures. With a commitment to quality care and patient satisfaction, we ensure you receive the highest level of expertise and support.

Book Your Consultation Today

If you are considering ICL surgery in London, reach out to us at Optimal Vision. We offer a comprehensive eye care experience designed to help you achieve the best vision possible. Call us at 020 7183 3725 or visit our website to book your consultation. Let’s embark on this journey together.