The revolution of surface ablations (PRK, LASEK, or Epi-LASIK) in recent years, together with the development of new technologies for flap creation in LASIK and the use of wound-healing modulators in PRK, have added further complexity to the debate between proponents of surface and stromal ablations. With the availability of so many option for LASER refractive surgery, it warrants a comparative discussion among several existing techniques. Laser-assisted in situ keratomileusis   (LASIK) LASIK is now the most commonly performed refractive surgery all over the world.

This procedure is effective for treating  low, moderate, and high myopia with and without astigmatism, as well as hyperopia with and without astigmatism. The steps of the surgery are as follows: A microkeratome is used to raise a corneal flap about the size of a contact lens. This flap usually averages 160 microns thick and…