LASIK is a type of laser-guided eye surgery intended to fix disorders with vision. The surgical procedure is performed by ophthalmologists, who are physicians specializing in diseases and disorders of the eye. LASIK is usually a preferred alternative to pRK (photorefractive keratectomy), as it is less painful and requires less time to heal completely. Prior to LASIK surgery, the patient's corneas are evaluated with a computer driven scanner and it creates a map of the cornea. This stage of the procedure also spots astigmatism and additional deviations in the shape of the cornea. The operating surgeon uses this information to determine the location and amount of corneal tissue to be removed during the operation. The operation is done while the patient is awake and functional, nonetheless, the patient is typically given a minor sedating medication and anesthetizing drops for the eyes. The surgeon operates the lasers, which make all of the incisions. A flap is sliced in the cornea using a laser or a blade. Then an excimer laser remodels the cornea. The laser destroys tissue without inducing damage or injury. Although usually uncommon, complications might occur with LASIK or any method of eye surgeries. A few of of the more commonly reported complications of LASIK include: infection, light sensitive and dry eyes, over or under correction, fluctuations in vision, starbursts or halos around lights, doubled vision, and troubles with the flap that was created during the surgery. Although LASIK technology is getting better quickly, research has not proven long-term complications or damage. The surgical procedure cannot be reversed.

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