LASIK (laser-assisted in situ keratomileusis) is a popular type of refractive surgery, or surgery performed to improve visual acuity.
In LASIK, an incision is made to lift up a partial thickness of the cornea, using a very sharp, thin microtome.
Once the flap is formed, the stroma of the cornea is sculpted with the laser, under computer control. Many of the newer LASIK systems can also accommodate for any eye movement during surgery, using a tracking program.
This procedure has a very high success rate with relatively few complications.