ICL Surgery: Vision Correction Without Touching the Cornea
For high prescriptions or thin corneas that rule out LASIK, an Implantable Collamer Lens (ICL) offers a reversible way to see clearly again.
What Is ICL Surgery?
ICL (Implantable Collamer Lens) surgery involves placing a small, biocompatible artificial lens inside the eye — positioned between the iris and your eye's natural lens — without removing or reshaping any corneal tissue. Unlike LASIK or PRK, which correct vision by reshaping the cornea, ICL corrects vision by adding a permanent corrective lens inside the eye, similar in concept to a permanent, invisible contact lens.
Who Is ICL Surgery For?
- Very high degrees of myopia or astigmatism beyond the safe range for LASIK
- Thin corneas that aren't suitable candidates for corneal-based procedures
- Chronic dry eye that could be worsened by corneal surgery
- Patients who want a potentially reversible option, since the lens can be removed if needed
Cross-section of the human eye (Wikimedia Commons, CC BY-SA 3.0)
How the Procedure Works
Performed under local anesthesia, the surgeon makes a small incision at the edge of the cornea and carefully positions the folded ICL, which unfolds into place inside the eye. The procedure typically takes about 15–30 minutes per eye and doesn't require any removal of corneal tissue.
Recovery and Results
Many patients notice significantly improved vision within a day, with full stabilization over the following 1–2 weeks. Because no corneal tissue is removed, the natural corneal shape and thickness are preserved. Regular follow-ups monitor eye pressure and lens positioning in the months after surgery.
ICL vs LASIK/SMILE
ICL is generally considered when corneal-based procedures aren't a safe option — either due to prescription strength, corneal thickness, or dry eye severity. Your surgeon will compare your candidacy across all these procedures during a comprehensive pre-surgical workup.