LASIK is a form of laser surgery to the eye meant to minimize or repair problems with eyesight. The surgery is performed by ophthalmologists, who are medical doctors who specialize in disorders of the eye. LASIK is generally a preferred alternative to pRK (photorefractive keratectomy), as it is less painful and requires less time to recover completely. Prior to having LASIK surgery, the patient's corneas are examined with a computer driven scanner and it creates a map of the cornea. This step of the process also picks up astigmatism as well as additional irregularities in the shape of the cornea. The surgeon uses this data to ascertain the location as well as the amount of corneal material to be eliminated during the operation. The surgery is carried out while the person is awake and functional, all the same, the person is generally given a mild sedative and anesthetizing drops in the eyes. The operating surgeon operates the lasers, which produce all of the cutting. A flap is carved in the cornea, which is the clear front part of the eye, using a laser or blade. Then an excimer laser is used to remodel the cornea. The laser destroys tissue without causing damage. Although usually uncommon, damaging complications could occur with LASIK or any method of eye surgeries. A number of the more typically reported complications of LASIK typically include: infection, dry or light sensitive eyes, under or over correction, changing vision, starbursts or halos around lights, double vision, and disorders with the flap made during the surgery. Although LASIK technology is improving quickly, scientists have not proven long-term or permanent damage. The surgical procedure can't be reversed.

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