LASIK is a form of laser-guided eye surgery which is intended to fix problems with eyesight. The operation is carried out by ophthalmologists, who are medical physicians who specialize in eye problems. LASIK is ordinarily preferred to photorefractive keratectomy, or PRK, as it is less painful and requires less time to heal completely. Before having LASIK surgery, the patient's corneas are examined with a computer driven sophisticated scanning device and the cornea is mapped out. This procedure also detects astigmatism and additional peculiarities in the cornea's shape. The operating surgeon uses this data to ascertain the location as well as the amount of corneal tissue to be eliminated during the operation. The surgery is done with the patient awake and functional, but, the person is often given a minor sedating medication and anesthetic drops for the eyes. The operating surgeon operates the laser machines, which do all of the incisions. A flap is cut in the cornea, which is the clear front part of the eye, using a laser or blade. Afterwards, an excimer laser remodels the cornea. The laser vaporizes tissue without inducing harm to the eye. Although relatively uncommon, damaging complications may occur with LASIK or non laser forms of eye surgeries. Just a few of the more commonly reported complications of LASIK can include: infection, light sensitive or dry eyes, under or over correction, fluctuations in vision, rings around lights, doubled vision, and problems with the flap created during the surgery. Although LASIK technology is improving very rapidly, research studies have not completely defined long-term complications. The surgical procedure can't be reversed.

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