LASIK is a type of laser eye surgery meant to correct disorders with eyesight. It is carried out by ophthalmologists, who are medical doctors specializing in eye disorders. LASIK is usually preferred to pRK eye surgery, as it is less painful and requires less time to recover. Prior to LASIK surgery, the patient's corneas are analyzed with a computerized sophisticated scanning device and a corneal map is created. This step of the process also detects astigmatism as well as other deviations in the shape of the cornea. The operating surgeon uses this information to determine the location as well as the amount of corneal material to be eliminated during the surgery. The surgery is performed while the patient is awake and functional, nonetheless, the person is usually given a modest sedating drug and anesthetizing drops in the eyes. The surgeon operates the laser machines, which do all of the incisions. A flap is carved in the cornea, which is the clear front part of the eye, using a laser or a blade. Subsequently, an excimer laser remodels the cornea. The laser destroys tissue without inducing injury to the eye. Although usually uncommon, complications do occur with LASIK or any method of eye surgeries. Some of the more frequently reported complications of LASIK include: infection, light sensitive and dry eyes, under or over correction, fluctuations in vision, rings around lights, double vision, and troubles with the flap created during the surgery. Although LASIK technology is improving rapidly, research has not ascertained long-term complicating problems. The process cannot be reversed.

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