LASIK is a type of laser eye operation designed to improve or correct disorders with eyesight. LASIK is performed by ophthalmologists, who are medical physicians specializing in diseases and disorders of the eye. LASIK is usually preferred to photorefractive keratectomy, or PRK, as it is less pain-producing and requires less time for full recovery. Prior to having LASIK eye surgery, the patient's corneas are evaluated with a computer controlled scanner and it creates a map of the cornea. This procedure also discovers astigmatism or other deviations in the shape of the cornea. The operating surgeon uses this information to calculate the amount and location of corneal material to be removed during the surgery. The operation is done while the person is awake, nonetheless, the person is usually given a mild sedating drug and anesthetizing eye drops. The eye surgeon operates the lasers, which produce all of the incisions. A flap is cut in the cornea using a blade or laser. Later, an excimer laser remodels the cornea. The laser destroys tissue without creating damage to the eye. Although relatively uncommon, complications or damage might occur with LASIK or other laser or non laser eye surgeries. Just some of the more typically reported complications of LASIK include: infection, light sensitive and dry eyes, over or under correction, changes in vision, starbursts or halos around lights, doubled vision, and troubles with the flap that was made during the operation. Although LASIK technology is improving quickly, scientists have not completely determined long-term or permanent complications. The lASIK procedure can't be reversed.

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