LASIK is a form of laser-guided surgery to the eye which is intended to improve or correct troubles with eyesight. The surgery is performed by ophthalmologists, who are physicians specializing in eye disorders and diseases. LASIK is generally preferred to pRK (photorefractive keratectomy), as it is much less painful and requires less time for healing. Prior to having LASIK surgery, the patient's corneas are evaluated with a computer driven sophisticated scanner and a corneal map is devised. This stage of the process also detects astigmatism & additional peculiarities in the shape of the cornea. The eye surgeon uses this information to ascertain the amount as well as location of corneal tissue to be eliminated during the surgery. The surgery is done while the person is awake and alert, but, the person is generally given a minor sedating agent and anesthetizing drops in the eyes. The surgeon operates the lasers, which create all of the cutting. A flap is sliced in the cornea using a laser or blade. And then, an excimer laser is used to remodel the cornea. The laser vaporizes tissue without inducing damage or injury. Although usually uncommon, complications or damage might occur with LASIK or any eye surgeries. Just a few of the more frequently reported complications of LASIK typically include: infection, light sensitive or dry eyes, under or over correction, changes in vision, starbursts or halos around lights, double vision, and issues with the flap that was made during the operation. Although LASIK technology is getting better quickly, clinical studies have not completely determined long-term complications or damage. The eye surgery can't be reversed.

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