LASIK is a type of laser surgery to the eye intended to fix disorders with vision. It is carried out by ophthalmologists, who are physicians specializing in diseases and disorders of the eye. LASIK is generally a preferred alternative to photorefractive keratectomy (PRK), as it is less pain-producing and requires less time to recover completely. Prior to LASIK surgery, the patient's corneas are evaluated with a computerized sophisticated scanning device and a corneal map is devised. This procedure also spots astigmatism as well as additional deviations in the cornea's shape. The eye surgeon uses this data to calculate the location as well as the amount of corneal material to be eliminated during the operation. The surgery is performed while the person is awake and functional, however, the person is usually given a mild sedating drug and anesthetizing eye drops. The eye surgeon operates the lasers, which make all of the cutting. A flap is cut in the cornea using a laser or a blade. Afterwards, an excimer laser remodels the cornea. The laser vaporizes tissue without inducing damage to the eye. Although relatively uncommon, damaging complications could occur with LASIK or any type of eye surgeries. A few of of the more frequently reported complications of LASIK can include: infection, light sensitive and dry eyes, over or under correction, changing vision, rings around lights, doubled vision, and troubles with the flap made during the surgical procedure. Although LASIK technology is improving quickly, scientists have not characterized long-term complicating problems. The surgical procedure is irreversible.

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