LASIK is a form of laser eye surgery designed to correct or lessen difficulties with eyesight. The surgical procedure is performed by ophthalmologists, who are physicians specializing in disorders of the eye. LASIK is generally preferred to pRK surgery, as it is much less painful and requires less time for healing. Before having LASIK surgery, the patient's corneas are analyzed with a computerized sophisticated scanner and a corneal map is created. This step of the procedure also detects astigmatism and also additional peculiarities in the cornea's shape. The operating surgeon uses this data to judge the amount as well as location of corneal tissue to be removed during the surgery. The surgery is performed while the patient is awake and alert, still, the person is generally given a minor sedative and anesthetizing drops in the eyes. The eye surgeon operates the laser machines, which do all of the cutting. A flap is carved in the cornea using a laser or a blade. Afterwards, an excimer laser remodels the cornea. The laser vaporizes tissue without inducing damage. Although usually uncommon, complications or damage can occur with LASIK or any form of eye surgeries. Just a few of the more typically reported complications of LASIK include: infection, light sensitive or dry eyes, under or over correction, changes in vision, halos or starbursts around lights, doubled vision, and issues with the flap that was created during the surgery. Although LASIK technology is improving very rapidly, research has not completely determined long-term or permanent damage. The surgery cannot be reversed.

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