LASIK

LA·SIK

noun \ˈlā-sik\

Definition of LASIK

: a surgical operation to reshape the cornea for correction of nearsightedness, farsightedness, or astigmatism that involves the use of a microkeratome to separate the surface layer of the cornea creating a hinged flap providing access to the inner cornea where varying degrees of tissue are removed by an excimer laser followed by replacement of the corneal flap—called also laser-assisted in-situ keratomileusis