LASEK
Laser epithelial Keratomileusis (LASEK) is a modified form of photorefractive keratectomy (PRK). Unlike in PRK, the epithelium is not removed in LASEK. The surgeon instead folds back the loosened epithelium so that the laser can reshape the exposed cornea. LASEK disturbs less corneal tissue that its sound alike counterpart. LASEK was developed to reduce the chance of complications that can occur when the flap created during LASIK is not the ideal thickness or diameter.
This laser eye surgery is used most often for people with corneas that are to thin or too flat for LASIK. Visual recovery after LASEK is generally faster than in PRK but slower than in LASIK.