LASIK is a type of laser operation to the eye intended to correct or lessen troubles with eyesight. The operation is carried out by ophthalmologists, who are physicians who specialize in diseases and disorders of the eye. LASIK is ordinarily preferred to pRK surgery, as it is less pain-producing and requires less time for full recovery. Prior to having LASIK surgery, the patient's corneas are analyzed with a computer controlled sophisticated scanner and it creates a map of the cornea. This step of the procedure also detects astigmatism as well as other problems in the cornea's shape. The eye surgeon uses this data to find out the location as well as the amount of corneal material to be eliminated during the operation. The surgery is carried out with the patient awake and functional, but, the patient is usually given a minor sedating agent and anesthetizing drops in the eyes. The surgeon operates the lasers, which do all of the incisions. A flap is cut in the cornea using a blade or laser. Later, an excimer laser is used to remodel the cornea. The laser destroys tissue without inducing damage or injury. Although relatively uncommon, damaging complications may occur with LASIK or any eye surgeries. Just a few of the more typically reported complications of LASIK include: infection, dry or light sensitive eyes, under or over correction, fluctuating vision, halos or starbursts around lights, double vision, and troubles with the flap produced during the surgery. Although LASIK technology is improving rapidly, clinical studies have not completely defined long-term or permanent damage. The eye surgery cannot be reversed.

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