LASIK is a form of laser surgery to the eye meant to repair problems with eyesight. The operation is performed by ophthalmologists, who are medical doctors specializing in diseases and disorders of the eye. LASIK is commonly a preferred alternative to pRK (photorefractive keratectomy), as it is not as painful and requires less time for full recovery. Prior to LASIK surgery, the patient's corneas are analyzed with a computer controlled scanner and a corneal map is created. This stage of the process also detects astigmatism & other deviations in the shape of the cornea. The surgeon uses this data to judge the amount and location of corneal tissue to be eliminated during the surgery. The operation is performed while the person is awake and alert, all the same, the person is typically given a modest sedating drug and anesthetic drops for the eyes. The eye surgeon operates the lasers, which produce all of the incisions. A flap is sliced in the cornea, which is the clear front part of the eye, using a laser or blade. Then an excimer laser is used to remodel the cornea. The laser vaporizes tissue without inducing injury or damage. Although usually uncommon, complications or damage do occur with LASIK or any method of eye surgeries. Just some of the more commonly reported complications of LASIK can include: infection, dry or light sensitive eyes, under or over correction, changing vision, halos or starbursts around lights, double vision, and difficulties with the flap produced during the surgical procedure. Although LASIK technology is getting better quickly, research studies have not ascertained long-term complications. The procedure cannot be reversed.

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