LASIK is a type of laser eye surgery meant to correct or lessen problems with vision. The surgery is carried out by ophthalmologists, who are physicians or MDs who specialize in eye disorders. LASIK is usually preferable to pRK (photorefractive keratectomy), as it is much less painful and requires less time for fulll healing. Before having LASIK surgery, the patient's corneas are examined with a computer controlled scanner and a map of the cornea is made. This procedure also discovers astigmatism and other deviations in the shape of the cornea. The surgeon uses this data to find out the amount as well as location of corneal tissue to be removed during the surgery. The surgery is performed with the patient awake, nonetheless, the patient is often given a minor sedating drug and anesthetizing drops for the eyes. The eye surgeon operates the laser machines, which create all of the incisions. A flap is carved in the cornea, which is the clear front part of the eye, using a blade or a laser. Subsequently, an excimer laser remodels the cornea. The laser destroys tissue without creating harm to the eye. Although relatively uncommon, damaging complications can occur with LASIK or any method of eye surgeries. Some of the more commonly reported complications of LASIK typically include: infection, light sensitive and dry eyes, under or over correction, fluctuations in vision, rings around lights, double vision, and difficulties with the flap created during the operation. Although LASIK technology is getting better rapidly, clinical studies have not determined long-term complicating problems. The lASIK procedure can't be reversed.

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