LASIK stands for LASER-ASSISTED IN SITU KERATOMILEUSIS. This laser vision correction procedure can be used to treat myopia (near sightedness), hyperopia (Farsightedness) and Astigmatism. LASIK is a procedure that uses the “Cool” light from an Excimer laser to reshape the inner tissue of the cornea.
LASIK is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses and not, as is usually thought, designed to totally eliminate the spectacle power, which is often, impossible.
The accuracy of the post LASIK residual power is based on many factors like pre-operative high myopia or high astigmatism or corneas which are not perfectly symmetrical. The power will reduce to the level where you may not need to use glasses for over 85% of the time, but some residual power is to be expected.
