LASIK is a type of laser-guided operation to the eye intended to cure or improve problems with vision. LASIK is performed by ophthalmologists, who are physicians or MDs specializing in eye disorders and diseases. LASIK is ordinarily a preferred alternative to pRK (photorefractive keratectomy), as it is less painful and requires less time for fulll healing. Prior to LASIK eye surgery, the patient's corneas are examined with a computer driven sophisticated scanner and the cornea is mapped out. This step of the process also spots astigmatism as well as additional deviations in the shape of the cornea. The operating surgeon uses this information to find out the amount and location of corneal tissue to be eliminated during the operation. The operation is performed with the person awake, nonetheless, the patient is typically given a mild sedative and anesthetic drops for the eyes. The surgeon operates the lasers, which produce all of the incisions. A flap is cut in the cornea, which is the clear front part of the eye, using a blade or a laser. Then an excimer laser is used to remodel the cornea. The laser destroys tissue without causing damage to the eye. Although relatively uncommon, damaging complications do occur with LASIK or other laser or non laser eye surgeries. A number of the more commonly reported complications of LASIK are: infection, dry eyes and light sensitive eyes, over or under correction, changing vision, starbursts or halos around lights, double vision, and problems with the flap created during the surgery. Although LASIK technology is improving quickly, studies have not ascertained long-term complications. The surgery can't be reversed.

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