LASIK is a type of laser-guided surgery to the eye intended to correct or at least minimize issues with vision. LASIK is performed by ophthalmologists, who are physicians who specialize in disorders of the eye. LASIK is typically preferred to pRK (photorefractive keratectomy), as it is less painful and requires less time for full recovery. Before having LASIK eye surgery, the patient's corneas are examined with a computer controlled scanning device and a corneal map is created. This step of the process also spots astigmatism and other problems in the cornea's shape. The eye surgeon uses this information to compute the location and amount of corneal material to be removed during the operation. The operation is performed with the person awake and functional, however, the patient is usually given a modest sedating medication and anesthetizing drops in the eyes. The surgeon operates the lasers, which make all of the cutting. A flap is carved in the cornea using a laser or a blade. Afterwards, an excimer laser is used to remodel the cornea. The laser destroys tissue without inducing harm to the eye. Although usually uncommon, some complications can occur with LASIK or other laser or non laser eye surgeries. Just some of the more commonly reported complications of LASIK can include: infection, light sensitive and dry eyes, under or over correction, fluctuations in vision, halos or starbursts around lights, double vision, and disorders with the flap that was made during the operation. Although LASIK technology is improving rapidly, research has not characterized long-term damaging complications. The process can't be reversed.

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