LASIK is a form of laser surgery to the eye intended to fix problems with eyesight. It is carried out by ophthalmologists, who are medical doctors who specialize in eye disorders & diseases. LASIK is typically preferred to pRK (photorefractive keratectomy), as it is much less painful and requires less time to recover. Before having LASIK eye surgery, the patient's corneas are analyzed with a computerized scanning device and the cornea is mapped out. This procedure also discovers astigmatism as well as additional deviations in the shape of the cornea. The operating surgeon uses this information to ascertain the location as well as the amount of corneal tissue to be removed during the operation. The operation is performed with the person awake and functional, nonetheless, the patient is usually given a mild sedating drug and anesthetizing drops for the eyes. The eye surgeon operates the lasers, which produce all of the cutting. A flap is sliced in the cornea using a laser or a blade. Then an excimer laser is used to remodel the cornea. The laser destroys tissue without inducing injury or damage. Although relatively uncommon, damaging complications may occur with LASIK or other laser or non laser eye surgeries. Some of the more commonly reported complications of LASIK can include: infection, dry eyes and light sensitive eyes, under or over correction, changes in vision, rings around lights, double vision, and disorders with the flap that was produced during the surgical procedure. Although LASIK technology is getting better rapidly, scientists have not completely determined long-term complications. The lASIK procedure is irreversible.

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