LASIK is a type of laser surgery to the eye meant to cure or improve troubles with vision. LASIK is performed by ophthalmologists, who are physicians who specialize in diseases and disorders of the eye. LASIK is commonly preferable to pRK (photorefractive keratectomy), as it is less painful and requires less time for full recovery. Prior to LASIK eye surgery, the patient's corneas are examined with a computer controlled scanner and a map of the cornea is made. This procedure also spots astigmatism and additional irregularities in the cornea's shape. The operating surgeon uses this data to judge the amount and location of corneal material to be eliminated during the surgery. The surgery is carried out with the person awake, nevertheless, the person is typically given a minor sedating medication and anesthetic drops for the eyes. The surgeon operates the lasers, which create all of the incisions. A flap is sliced in the cornea using a laser or blade. And then, an excimer laser remodels the cornea. The laser destroys tissue without creating damage to the eye. Although usually uncommon, complications or damage do occur with LASIK or non laser forms of eye surgeries. A number of the more typically reported complications of LASIK include: infection, light sensitive and dry eyes, under or over correction, changes in vision, starbursts or halos around lights, double vision, and difficulties with the flap produced during the operation. Although LASIK technology is improving quickly, studies have not defined long-term damaging complications. The surgical procedure can't be reversed.

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