What is LASIK (laser assisted in-situ keratomileusis)?
LASIK is a procedure that corrects nearsightedness (myopia), farsightedness (hyperopia) and astigmatism. The procedure involves creating a thin flap of cornea using a precise, highly engineered instrument called a microkeratome. This flap is gently lifted exposing the underlying corneal tissue. The excimer laser is then applied according to a highly scrutinized mathematical calculation to custom shape the cornea. When the cool beam of the laser contacts the corneal cells the cellular bonds are broken and vaporize into the atmosphere. These cells, called stromal cells, are never regenerated by the body, which is how we know the effects of the laser are permanent.
