The cornea is the transparent part of the eye that covers the iris. It is also the main light bending part of the eye.
Anesthetic eye drops are given to numb the eye and the surgeon marks the cornea with water-soluble ink to guide replacement of the corneal flap.
The surgeon performs a keratectomy, which creates a corneal flap. A keratectomy is a procedure that uses a small instrument that makes a cut in the cornea as it moves across it. The flap is lifted and reflected, exposing the cornea beneath.
A computer-controlled laser reshapes the cornea to the prescribed shape for clear vision.
The corneal flap is repositioned and bonds to the cut edge of the cornea quickly.
Review Date: 8/18/2020
Reviewed By: Franklin W. Lusby, MD, ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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