LASIK is a type of laser-guided eye operation which is intended to repair disorders with eyesight. The operation is performed by ophthalmologists, who are medical doctors who specialize in eye problems. LASIK is typically preferable to photorefractive keratectomy (PRK), as it is not as painful and requires less time to recover completely. Prior to having LASIK surgery, the patient's corneas are examined with a computer controlled scanning device and a corneal map is devised. This stage of the process also spots astigmatism and also other peculiarities in the shape of the cornea. The eye surgeon uses this information to compute the amount as well as location of corneal material to be removed during the operation. The operation is performed while the person is awake, nevertheless, the person is usually given a modest sedating agent and anesthetizing drops in the eyes. The eye surgeon operates the laser machines, which do all of the cutting. A flap is cut in the cornea, which is the clear front part of the eye, using a laser or blade. Afterwards, an excimer laser is used to remodel the cornea. The laser destroys tissue without causing injury to the eye. Although relatively uncommon, complicating problems could occur with LASIK or any eye surgeries. A number of the more commonly reported complications of LASIK can include: infection, dry eyes and light sensitive eyes, over or under correction, changes in vision, starbursts or halos around lights, double vision, and issues with the flap made during the operation. Although LASIK technology is getting better quickly, research studies have not completely determined long-term or permanent damage. The eye surgery can't be reversed.

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