LASIK is a form of laser surgery to the eye intended to fix issues with sight. LASIK is performed by ophthalmologists, who are physicians specializing in eye disorders. LASIK is typically preferred to photorefractive keratectomy (PRK), as it is less painful and requires less time for fulll healing. Before having LASIK surgery, the patient's corneas are examined with a computer driven scanning device and it creates a map of the cornea. This process also picks up astigmatism or other problems in the shape of the cornea. The surgeon uses this data to find out the location and amount of corneal tissue to be removed during the surgery. The surgery is carried out with the person awake and alert, nonetheless, the person is generally given a minor sedating agent and anesthetic eye drops. The eye surgeon operates the lasers, which make all of the cutting. A flap is carved in the cornea using a blade or a laser. Afterwards, an excimer laser remodels the cornea. The laser vaporizes tissue without inducing injury or damage. Although relatively uncommon, complications or damage could occur with LASIK or any type of eye surgeries. A few of of the more frequently reported complications of LASIK typically include: infection, light sensitive or dry eyes, under or over correction, changing vision, starbursts or halos around lights, doubled vision, and troubles with the flap made during the surgical procedure. Although LASIK technology is improving rapidly, scientists have not completely determined long-term complicating problems. The surgery cannot be reversed.

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