Glossary term
LASIK
Reference only — not medical advice. See disclaimer.
Laser-Assisted In Situ Keratomileusis (LASIK) is the world's most commonly performed refractive eye surgery, in which a thin corneal flap is created and lifted, an excimer laser reshapes the underlying stroma to correct the refractive error, and the flap is repositioned. Most patients achieve 20/20 vision or better, with a rapid visual recovery typically within 24 hours.