LASIK is a type of laser-guided operation to the eye meant to remedy problems with eyesight. The surgery is performed by ophthalmologists, who are medical physicians specializing in eye problems. LASIK is ordinarily preferable to pRK (photorefractive keratectomy), as it is less painful and requires less time to recover completely. Before having LASIK surgery, the patient's corneas are evaluated with a computer driven sophisticated scanning device and a corneal map is created. This process also discovers astigmatism and additional irregularities in the shape of the cornea. The surgeon uses this information to determine the amount and location of corneal material to be eliminated during the surgery. The operation is performed with the person awake, nonetheless, the person is generally given a modest sedating drug and anesthetizing eye drops. The eye surgeon operates the laser machines, which do all of the incisions. A flap is cut in the cornea, which is the clear front part of the eye, using a blade or laser. Then an excimer laser is used to remodel the cornea. The laser vaporizes tissue without causing harm to the eye. Although usually uncommon, complications might occur with LASIK or any type of eye surgeries. Just some of the more frequently reported complications of LASIK are: infection, light sensitive and dry eyes, under or over correction, changes in vision, rings around lights, doubled vision, and difficulties with the flap that was made during the surgery. Although LASIK technology is getting better quickly, scientists have not completely determined long-term or permanent damage. The eye surgery cannot be reversed.

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