LASIK is a type of laser surgery to the eye which is intended to correct or at least minimize difficulties with sight. The operation is performed by ophthalmologists, who are medical doctors specializing in eye disorders. LASIK is commonly a preferred alternative to pRK (photorefractive keratectomy), as it is much less painful and requires less time for healing. Prior to LASIK surgery, the patient's corneas are examined with a computerized scanning device and it makes a map of the cornea. This stage of the procedure also picks up astigmatism and also other problems in the cornea's shape. The eye surgeon uses this information to calculate the amount and location of corneal material to be removed during the operation. The surgery is performed while the person is awake and alert, nonetheless, the patient is usually given a minor sedative and anesthetic drops in the eyes. The eye surgeon operates the lasers, which produce all of the incisions. A flap is cut in the cornea using a laser or blade. Then an excimer laser is used to remodel the cornea. The laser destroys tissue without inducing damage to the eye. Although usually uncommon, complications or damage could occur with LASIK or any eye surgeries. Some of the more frequently reported complications of LASIK can include: infection, dry eyes and light sensitive eyes, under or over correction, fluctuations in vision, starbursts or halos around lights, double vision, and troubles with the flap that was created during the surgery. Although LASIK technology is getting better rapidly, studies have not completely defined long-term damaging complications. The surgical procedure cannot be reversed.

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