LASIK is a type of laser surgery to the eye meant to correct difficulties with eyesight. LASIK is performed by ophthalmologists, who are medical physicians who specialize in diseases and disorders of the eye. LASIK is commonly preferable to photorefractive keratectomy (PRK), as it is not as painful and requires less time for healing. Before having LASIK surgery, the patient's corneas are analyzed with a computerized scanning device and a corneal map is created. This stage of the process also detects astigmatism as well as additional problems in the shape of the cornea. The operating surgeon uses this data to find out the location and amount of corneal tissue to be removed during the surgery. The operation is done with the patient awake, nevertheless, the patient is typically given a mild sedating medication and anesthetic drops in the eyes. The operating surgeon operates the lasers, which produce all of the incisions. A flap is carved in the cornea using a laser or blade. Subsequently, an excimer laser remodels the cornea. The laser destroys tissue without creating damage or injury. Although relatively uncommon, some complications do occur with LASIK or any form of eye surgeries. Just some of the more regularly reported complications of LASIK are: infection, dry or light sensitive eyes, over or under correction, changing vision, starbursts or halos around lights, double vision, and troubles with the flap that was made during the operation. Although LASIK technology is improving quickly, research has not proven long-term damaging complications. The lASIK procedure cannot be reversed.

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