LASIK is a type of laser-guided eye surgery intended to improve or correct troubles with eyesight. The operation is carried out by ophthalmologists, who are medical physicians who specialize in disorders of the eye. LASIK is typically a preferred alternative to photorefractive keratectomy, or PRK, as it is much less painful and requires less time for fulll healing. Prior to having LASIK surgery, the patient's corneas are evaluated with a computerized sophisticated scanner and it makes a map of the cornea. This step of the procedure also detects astigmatism as well as other problems in the shape of the cornea. The eye surgeon uses this information to calculate the amount as well as location of corneal material to be eliminated during the surgery. The surgery is carried out while the person is awake, nonetheless, the patient is generally given a minor sedating drug and anesthetizing 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 laser or a blade. Afterwards, an excimer laser is used to remodel the cornea. The laser destroys tissue without creating damage. Although usually uncommon, complicating problems could occur with LASIK or any method of eye surgeries. Just some of the more commonly reported complications of LASIK typically include: infection, light sensitive or dry eyes, under or over correction, fluctuating vision, starbursts or halos around lights, double vision, and difficulties with the flap created during the operation. Although LASIK technology is improving quickly, studies have not determined long-term or permanent damage. The process is irreversible.

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