What are Implantable Collamer Lenses (ICLs)?
An ICL is a state-of-the-art lens implant designed to correct the common refractive errors nearsightedness (myopia) and astigmatism. Unlike traditional contact lenses that sit on the surface of the eye, an ICL is surgically placed inside the eye just behind the iris and in front of the eye's natural lens.
These lenses are made from a biocompatible material called Collamer, which contains a small amount of collagen. This material is soft, flexible, and well-tolerated by the eye, meaning it can remain in place indefinitely without causing dry eye or other complications. A major advantage of ICLs is that the procedure is reversible; the lens can be removed or replaced if necessary. They work in conjunction with the natural lens to focus light correctly onto the retina, providing sharp, clear vision.
The ICL Placement Procedure
The placement of an ICL is an outpatient procedure, meaning you can return home the same day. The process is quick and typically takes only about 20 to 30 minutes per eye.
Preparation
Prior to the surgery, your eye doctor will provide specific instructions, which may include using prescribed eye drops. On the day of the procedure, a local anesthetic is applied to numb the eye, and a mild sedative may be offered to help you relax.
The Surgical Steps
- Creation of the Incision: The surgeon makes a very small incision (less than 3 mm) at the edge of the cornea.
- ICL Insertion: The Collamer lens is folded and then gently inserted through this small incision.
- Positioning: Once inside the eye, the ICL unfolds and is carefully positioned by the surgeon behind the iris, resting on the natural lens.
- Completion: The small incision typically seals itself without the need for stitches. Antibiotic and anti-inflammatory drops are applied.
Recovery
Most patients notice improved vision almost immediately. Follow-up appointments are essential for monitoring the healing process. You will be given protective measures to wear while sleeping and specific instructions for using eye drops during the recovery period. Full visual recovery usually occurs within a few days to a few weeks.
ICL vs. LASIK
Both ICLs and LASIK are effective options for vision correction, but they use fundamentally different approaches. The best choice depends on your specific eye health, prescription, and lifestyle.
The table below provides a general overview of the differences between ICLs and LASIK:
Feature | Implantable Collamer Lenses (ICLs) | LASIK (Laser-Assisted In Situ Keratomileusis) |
|---|---|---|
Mechanism | Placement of a permanent lens inside the eye, working with the natural lens. | Reshaping the eye's corneal tissue using an excimer laser. |
Reversibility | Reversible (lens can be removed/replaced). | Not Reversible (corneal tissue is permanently altered). |
Best for High Prescriptions | Excellent—Often the preferred choice for severe nearsightedness. | Limited—Effectiveness decreases with extremely high prescriptions. |
Range of Prescriptions | Limited—Not available for farsightedness or mixed astigmatism. | Corrects nearsightedness, farsightedness, and mixed astigmatism. |
Corneal Requirement | Does not involve the cornea; good option for thin corneas. | Requires sufficient corneal thickness. |
Dry Eye Impact | Minimal effect; less likely to cause or worsen dry eye. | Can temporarily increase dry eye symptoms. |
Procedure Details | Surgical insertion of a lens, inside the eye. | Laser ablation of tissue, outside surface of the eye. |
For more information on the EVO ICL, visit https://us.discovericl.com/
If you have a high prescription, thin corneas, or chronic dry eyes, ICLs may be recommended. Determining the best options in your specific situation starts with a comprehensive eye exam with a refractive surgeon experienced in the range of vision correction options. Make an appointment for a free screening examination at Eye Associates by calling (210) 340-5058.