During photorefractive keratectomy some of the surface cells of the cornea, called the corneal epithelium, are removed. This form of laser eye surgery with Lasik is a bladeless procedure, and like general Laser Vision Correction at Dr David Kleiman it can correct Nearsightedness, Farsightedness, and Astigmatism.
Other small imperfections can be mapped using a corneal mapping device called the VisX (vih-six) Wavescan at the . These imperfections and irregularities are generally linked to glares and halos, and once corrected with Custom LASIK, can dramatically improve vision.