LASIK is a type of laser operation to the eye designed to rectify difficulties with vision. The surgical procedure is carried out by ophthalmologists, who are physicians specializing in diseases and disorders of the eye. LASIK is commonly a preferred alternative to pRK eye surgery, as it is much less painful and requires less time for full recovery. Prior to LASIK surgery, the patient's corneas are evaluated with a computerized scanning device and a map of the cornea is made. This stage of the process also discovers astigmatism as well as additional deviations in the shape of the cornea. The surgeon uses this data to find out the location and amount of corneal tissue to be eliminated during the surgery. The surgery is carried out while the person is awake, however, the patient is usually given a minor sedating medication and anesthetic drops in the eyes. The eye surgeon operates the laser machines, which make all of the cutting. A flap is sliced in the cornea, which is the clear front part of the eye, using a blade or a laser. And then, an excimer laser is used to remodel the cornea. The laser vaporizes tissue without causing injury to the eye. Although relatively uncommon, complications might occur with LASIK or any form of eye surgeries. A few of of the more regularly reported complications of LASIK typically include: infection, light sensitive and dry eyes, under or over correction, fluctuations in vision, halos or starbursts around lights, double vision, and disorders with the flap created during the surgery. Although LASIK technology is improving very rapidly, research has not ascertained long-term complications or damage. The surgical procedure is irreversible.

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