LASIK is a type of laser-guided operation to the eye designed to correct or lessen troubles with eyesight. The surgical procedure is carried out by ophthalmologists, who are physicians specializing in eye disorders & diseases. LASIK is generally a preferred alternative to pRK eye surgery, as it is not as painful and requires less time to recover completely. Before having LASIK eye surgery, the patient's corneas are analyzed with a computer controlled sophisticated scanning device and a corneal map is created. This step of the process also spots astigmatism and also other peculiarities in the shape of the cornea. The operating surgeon uses this data to determine the location and amount of corneal tissue to be eliminated during the surgery. The operation is carried out while the person is awake and alert, all the same, the person is generally given a mild sedating medication and anesthetic drops in the eyes. The eye surgeon operates the laser machines, which create all of the incisions. A flap is cut in the cornea using a blade or laser. Then an excimer laser remodels the cornea. The laser destroys tissue without causing injury to the eye. Although relatively uncommon, complicating problems can occur with LASIK or any type of eye surgeries. A few of of the more typically reported complications of LASIK typically include: infection, dry or light sensitive eyes, over or under correction, changes in vision, halos or starbursts around lights, doubled vision, and disorders with the flap made during the operation. Although LASIK technology is improving quickly, scientists have not characterized long-term or permanent complications. The process is irreversible.

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