ICL (Implantable Collamer Lens)

Important: This information is for educational purposes only and does not constitute medical advice. ICL candidacy depends on individual eye characteristics including anterior chamber depth, endothelial cell count, and overall eye health. You must consult with a qualified ophthalmologist who can examine your eyes and review your complete medical history before making any decisions about vision correction surgery. Results vary by individual, and not everyone is a suitable candidate for ICL implantation.

The ICL (Implantable Collamer Lens), also known as the EVO ICL or phakic IOL, is a biocompatible lens implanted inside the eye to correct vision. Unlike LASIK or SMILE that permanently reshape the cornea, the ICL works by adding a corrective lens behind the iris and in front of the natural lens—leaving your cornea completely untouched.

Made of Collamer (a collagen copolymer), the ICL is designed to remain in the eye permanently but can be removed if needed—making it the only reversible vision correction procedure. This unique feature makes ICL particularly suitable for patients with high prescriptions, thin corneas, dry eyes, or those who want to preserve their cornea for potential future procedures. According to FDA clinical trial data, 76% of patients achieve 20/20 vision or better, and over 99% achieve 20/40 or better (the standard for driving). Patient satisfaction rates consistently exceed 99% in published studies.

The EVO ICL features CentraFLOW technology with a central port that allows natural fluid flow within the eye, eliminating the need for a peripheral iridotomy (laser hole in the iris) that was required with earlier lens designs. This advancement has virtually eliminated the risk of pupillary block, one of the historical concerns with phakic lens implantation.

Thailand’s leading eye centers offer ICL implantation using the same STAAR Surgical lenses available worldwide, with surgeons who have completed specialized certification. Costs are typically 55-65% lower than US pricing, though actual savings depend on your specific lens type and treatment requirements.

ICL vs. Corneal Refractive Surgery

ICL offers several distinct advantages for appropriate candidates:

• Reversibility: The only refractive procedure that can be completely reversed
• Corneal preservation: No corneal tissue is removed or reshaped
• Dry eye: Lowest incidence of dry eye among all refractive procedures
• High prescriptions: Treats myopia up to -20D versus -12D for LASIK
• Quality of vision: Studies show better contrast sensitivity than LASIK
• Night vision: Minimal glare and halos compared to corneal procedures
• Built-in UV protection: Lens blocks UV-A and UV-B rays

International Patient Considerations

As a medical tourism patient, coordinating follow-up care is essential:

• Pre-travel planning: Identify a local ophthalmologist in your home country who can provide post-operative care or emergency treatment if needed
• Medical records: Request complete surgical records including your ICL specifications card, imaging, and post-operative instructions to share with your home eye care provider
• Follow-up protocol: Critical checks occur at day 1 and week 1 in Thailand; additional follow-ups can often be coordinated virtually or with your local ophthalmologist
• Long-term monitoring: Annual exams to monitor endothelial cell count and watch for cataract development are recommended regardless of where you live
• Travel timing: Plan to stay in Thailand 7-10 days post-surgery for initial recovery and clearance to fly
• Flying after ICL: Generally safe 5-7 days post-surgery with no specific altitude restrictions; use lubricating drops and wear sunglasses

Some complications require prompt attention and may need care from a local provider after you return home. Discuss international care coordination with your surgical team before your procedure.