Clarity from Within: The Premium Lens Solution for High Prescriptions
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What is ICL Eye Surgery?
ICL (Implantable Collamer Lens) surgery is an advanced vision correction procedure in which a thin, biocompatible lens is placed inside the eye to correct moderate to severe myopia (short-sightedness), hyperopia (long-sightedness), and astigmatism.
Unlike laser procedures such as LASIK or PRK, ICL does not remove corneal tissue. The lens is positioned behind the iris (the coloured part of the eye) and in front of your natural lens. Your natural lens remains in place.
ICL can be an excellent option for patients who are not suitable for corneal laser surgery, particularly those with thin corneas or very high prescriptions.
Are 21 years or older
Have healthy eyes with no active infection or uncontrolled eye disease
Have moderate to severe myopia, hyperopia, or astigmatism
Have adequate anterior chamber depth and healthy endothelial cell count (assessed during screening)
Have appropriate pupil size to reduce risk of glare or halos in low light
Understand the expected outcomes and limitations of the procedure
Have had a stable prescription for at least one year
Excellent visual outcomes for moderate to high prescriptions
Made of Collamer® (a collagen-based biocompatible material) that is well tolerated within the eye
Reversible — the lens can be removed or exchanged if needed
Preserves corneal tissue (ideal for thin corneas or patients unsuitable for LASIK/PRK)
Fast recovery with minimal discomfort
Wide power range allowing precise prescription correction
Often provides sharper night vision compared to glasses or contact lenses
Long-term refractive stability
Suitable for active lifestyles, including sports and swimming
Maintains natural corneal shape
How the ICL Procedure Works
Pre-operative Assessment: Detailed measurements are taken to determine the correct lens size and power.
Anaesthesia: Numbing eye drops are applied. The procedure is painless.
Small corneal incision made; lubricant protects the cornea.
Lens Insertion: A tiny incision (approximately 2.8–3.0 mm) is made at the edge of the cornea. The folded ICL is gently inserted through a specialised injector cartridge.
Positioning: The lens unfolds and is carefully positioned behind the iris and in front of the natural lens. Proper alignment and vault (space between lenses) are confirmed.
Self-Sealing Incision: The small incision typically seals on its own without stitches.
Early vision improves within days; full stabilisation may take a few weeks.
Follow-up visits scheduled to monitor healing and visual outcomes.
The procedure usually takes 15–20 minutes per eye and is performed as a day-case surgery.
Most patients notice improved vision within a few days, although complete visual stabilisation may take several weeks.
Why Choose ASG for ICL Surgery
At ASG, we combine experienced refractive surgeons with advanced diagnostic imaging and precise surgical techniques to ensure optimal lens sizing and placement.
Our structured pre-operative evaluation and dedicated follow-up protocol prioritise:
- Safety
- Accuracy
- Rapid recovery
- Long-term visual stability
Advanced ICL Technology at ASG
We use state-of-the-art diagnostic and surgical equipment, including:
High-resolution Anterior Segment OCT & Ultrasound Biomicroscopy
For accurate sizing and vault prediction.
Corneal Topography & Tomography
To assess corneal health and rule out contraindications such as keratoconus.
Specular Microscopy
To evaluate endothelial cell count before and after surgery.
Digital Surgical Planning & Advanced Operating Microscopes
For precise placement and optimal visual outcomes.
Dedicated ICL Follow-Up Protocol
Structured long-term monitoring with targeted imaging to ensure sustained safety and lens stability.
Laser Peripheral Iridotomy (when indicated)
Performed in selected cases to optimise fluid flow and reduce intraocular pressure risk. (Note: Modern EVO ICL models typically do not require routine iridotomy.)
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Clear Answers for Better Vision
What is ICL surgery?
ICL (Implantable Collamer Lens) surgery is a premium vision-correction procedure where a tiny, biocompatible lens is permanently implanted inside the eye. Unlike a contact lens that sits on the surface, the ICL is placed between the iris and your natural lens to provide sharp, high-definition vision.
How is ICL different from LASIK or SMILE?
LASIK and SMILE are “subtractive” procedures that reshape the cornea by removing tissue. ICL is an “additive” procedure—it does not change the shape or thickness of your cornea. This makes it the ideal choice for patients who are not candidates for LASIK due to thin corneas or high refractive errors.
Who is an ideal candidate for ICL at ASG Eye Hospital?
You may be a perfect candidate for ICL if:
You are between 18 and 45 years old.
You have a high power (Myopia up to -18D or Astigmatism up to 6D).
You have been told your cornea is too thin or irregular for LASIK.
You have chronic dry eyes (ICL does not worsen dry eye symptoms).
What is the ICL procedure like?
The procedure is quick and performed as a day-care surgery. Our surgeons make a microscopic incision (no stitches required) and gently insert the foldable Collamer lens. The entire process takes about 15–20 minutes per eye, and the results are almost immediate.
Is ICL surgery painful?
No. We use specialized numbing eye drops so you will not feel any pain during the procedure. You may feel a slight sensation of pressure for a few seconds, but most patients at ASG find the experience very comfortable.
How long does the recovery take?
Most patients experience a “Wow!” moment with significantly clearer vision the very next day. You can typically return to your routine activities, such as working on a laptop or watching TV, within 48 hours. Full stabilization occurs within a week.
Can the ICL lens be removed?
One of the biggest advantages of ICL is that it is reversible. Unlike LASIK, which permanently changes the eye, the ICL lens can be safely removed or replaced by a surgeon if your prescription changes significantly or if you develop cataracts later in life.
Is ICL surgery safe?
Yes. The EVO ICL used at ASG is US-FDA approved and has been implanted in millions of eyes worldwide. It is made of “Collamer,” a biocompatible material that contains a UV filter to protect your eyes from harmful sun rays and does not cause an immune reaction.
Will people be able to see the lens in my eye?
No. The ICL is placed behind the iris (the colored part of your eye), making it completely invisible to you and others. Only an eye specialist using a microscope will be able to see that you have had the procedure.
Why should I choose ASG Eye Hospital for ICL?
ICL requires a very high level of surgical precision. At ASG, we use advanced Pentacam and Ultrasound Biomicroscopy (UBM) to take exact measurements of your eye’s internal space. This ensures the lens is sized perfectly for your eye, providing the highest level of safety and visual quality.
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