LASIK is a type of laser-guided eye operation designed to improve troubles with sight. The surgery is carried out by ophthalmologists, who are physicians who specialize in disorders of the eye. LASIK is usually preferable to photorefractive keratectomy (PRK), as it is much less painful and requires less time for healing. Before having LASIK eye surgery, the patient's corneas are analyzed with a computerized scanning device and it makes a map of the cornea. This process also discovers astigmatism and also additional deviations in the cornea's shape. The eye surgeon uses this information to find out the amount as well as location of corneal tissue to be removed during the operation. The operation is done with the person awake and alert, even so, the patient is generally given a mild sedative and anesthetic drops for the eyes. The operating surgeon operates the lasers, which create all of the cutting. A flap is sliced in the cornea using a blade or a laser. Subsequently, an excimer laser is used to remodel the cornea. The laser vaporizes tissue without causing damage or injury. Although relatively uncommon, complicating problems may occur with LASIK or non laser forms of eye surgeries. Some of the more typically reported complications of LASIK include: infection, light sensitive and dry eyes, over or under correction, changes in vision, rings around lights, double vision, and disorders with the flap that was made during the operation. Although LASIK technology is improving quickly, clinical studies have not proven long-term complications. The process is irreversible.

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