LASIK is a type of laser-guided operation to the eye meant to improve difficulties with eyesight. The surgical procedure is performed by ophthalmologists, who are physicians specializing in eye disorders. LASIK is ordinarily preferred to pRK (photorefractive keratectomy), as it is less pain-producing and requires less time for fulll healing. Prior to having LASIK eye surgery, the patient's corneas are analyzed with a computer controlled scanner and a map of the cornea is made. This step of the process also spots astigmatism as well as other irregularities in the cornea's shape. The eye surgeon uses this data to find out the location as well as the amount of corneal material to be removed during the operation. The operation is done with the person awake, nevertheless, the person is typically given a modest sedating agent and anesthetizing eye drops. The eye surgeon operates the laser machines, which do all of the incisions. A flap is cut in the cornea using a laser or a blade. Subsequently, an excimer laser is used to remodel the cornea. The laser vaporizes tissue without creating harm to the eye. Although relatively uncommon, damaging complications may occur with LASIK or other laser or non laser eye surgeries. Just some of the more regularly reported complications of LASIK can include: infection, dry or light sensitive eyes, under or over correction, fluctuating vision, halos or starbursts around lights, doubled vision, and problems with the flap produced during the operation. Although LASIK technology is improving very rapidly, studies have not determined long-term complications. The process cannot be reversed.

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