LASIK is a type of laser-guided eye operation intended to improve or correct disorders with sight. The surgical procedure is carried out by ophthalmologists, who are medical doctors who specialize in eye disorders. LASIK is usually a preferred alternative to pRK (photorefractive keratectomy), as it is less pain-producing and requires less time for fulll healing. Prior to LASIK eye surgery, the patient's corneas are examined with a computerized sophisticated scanner and a corneal map is devised. This step of the process also discovers astigmatism as well as additional deviations in the shape of the cornea. The operating surgeon uses this information to compute the amount as well as location of corneal material to be removed during the surgery. The surgery is carried out while the person is awake, still, the patient is generally given a modest sedating medication and anesthetizing drops for the eyes. The eye surgeon operates the laser machines, which do all of the cutting. A flap is sliced in the cornea using a laser or blade. Afterwards, an excimer laser is used to remodel the cornea. The laser vaporizes tissue without causing harm to the eye. Although relatively uncommon, complications or damage could occur with LASIK or any method of eye surgeries. Just a few of the more frequently reported complications of LASIK can include: infection, dry eyes and light sensitive eyes, under or over correction, fluctuations in vision, starbursts or halos around lights, double vision, and troubles with the flap created during the surgical procedure. Although LASIK technology is improving quickly, research has not completely defined long-term complications. The procedure cannot be reversed.

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