LASIK (Laser-Assisted In Situ Keratomileusis) is one of the surgeries that treat refractive errors of the eye. LASIK is a variant of excimer laser photorefractive keretectomy (PRK). Although LASIK is a newer procedure, it has become an increasingly common surgery which many people opt for to treat refractive errors.
The primary difference between LASIK and PRK is that in the former, laser is used through an instrument called microkeretome to change the shape of the cornea. The microkeretome creates a thin flap of cornea, which is folded back, and the laser treatment is then performed under this flap. Visually recovery is usually faster as well, because the surface layer of the eye does not need to re-heal after being removed as it does in PRK.
LASIK is an exciting surgical procedure that is capable of correcting a wide range of nearsightedness (myopia), farsightedness (hyperopia) and astigmatism. LASIK is the acronym for laser assisted in-situ keratomileusis. The name refers to the use of a laser to reshape the cornea without invading the neighboring cell layers.