LASIK is a form of laser surgery to the eye which is intended to correct troubles with vision. The operation is performed by ophthalmologists, who are physicians who specialize in diseases and disorders of the eye. LASIK is generally preferable to photorefractive keratectomy (PRK), as it is much less painful and requires less time for full recovery. Before having LASIK eye surgery, the patient's corneas are examined with a computerized scanning device and a corneal map is created. This stage of the procedure also spots astigmatism as well as additional deviations in the cornea's shape. The surgeon uses this data to judge the location as well as the amount of corneal tissue to be eliminated during the surgery. The surgery is done while the person is awake and functional, nevertheless, the person is often given a minor sedating drug and anesthetic drops in the eyes. The surgeon operates the lasers, which create all of the cutting. A flap is carved in the cornea, which is the clear front part of the eye, using a blade or laser. Subsequently, an excimer laser remodels the cornea. The laser vaporizes tissue without creating damage. Although usually uncommon, complications or damage might occur with LASIK or any form of eye surgeries. Just a few of the more typically reported complications of LASIK are: infection, dry eyes and light sensitive eyes, under or over correction, changing vision, starbursts or halos around lights, doubled vision, and problems with the flap that was produced during the surgery. Although LASIK technology is improving very rapidly, studies have not defined long-term complications or damage. The eye surgery is irreversible.

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