LASIK is a type of laser-guided operation to the eye meant to fix disorders with eyesight. The surgery is carried out by ophthalmologists, who are medical doctors who specialize in eye disorders. LASIK is typically preferable to pRK (photorefractive keratectomy), as it is less pain-producing and requires less time for healing. Prior to having LASIK eye surgery, the patient's corneas are analyzed with a computerized sophisticated scanner and the cornea is mapped out. This procedure also discovers astigmatism as well as other problems in the shape of the cornea. The eye surgeon uses this data to calculate the location and amount of corneal tissue to be removed during the operation. The surgery is performed while the patient is awake and functional, however, the patient is generally given a mild sedating agent and anesthetic drops in the eyes. The surgeon operates the laser machines, which do all of the cutting. A flap is sliced in the cornea, which is the clear front part of the eye, using a laser or blade. And then, an excimer laser is used to remodel the cornea. The laser destroys tissue without causing injury to the eye. Although usually uncommon, complications might occur with LASIK or any form of eye surgeries. A number of the more regularly reported complications of LASIK typically include: infection, light sensitive and dry eyes, over or under correction, changes in vision, starbursts or halos around lights, double vision, and troubles with the flap that was produced during the surgery. Although LASIK technology is getting better quickly, research studies have not completely determined long-term complications. The process cannot be reversed.

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