LASIK is a form of laser-guided surgery to the eye meant to repair problems with vision. The operation is performed by ophthalmologists, who are mDs who specialize in diseases and disorders of the eye. LASIK is generally preferred to photorefractive keratectomy (PRK), as it is not as painful and requires less time for healing. Before having LASIK surgery, the patient's corneas are analyzed with a computer driven scanner and a corneal map is devised. This stage of the procedure also discovers astigmatism and also additional problems in the shape of the cornea. The operating surgeon uses this information to judge the location and amount of corneal tissue to be eliminated during the operation. The operation is performed while the patient is awake and alert, still, the person is typically given a minor sedative and anesthetic drops for the eyes. The operating surgeon operates the lasers, which do all of the incisions. A flap is sliced in the cornea using a blade or a laser. Afterwards, an excimer laser is used to remodel the cornea. The laser destroys tissue without creating damage to the eye. Although relatively uncommon, some complications could occur with LASIK or any form of eye surgeries. A few of of the more regularly reported complications of LASIK typically include: infection, dry eyes and light sensitive eyes, over or under correction, changing vision, halos or starbursts around lights, doubled vision, and disorders with the flap that was created during the operation. Although LASIK technology is improving rapidly, studies have not ascertained long-term complicating problems. The procedure cannot be reversed.

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