LASIK is a form of laser-guided eye surgery meant to cure or improve difficulties with eyesight. The surgery is performed by ophthalmologists, who are mDs who specialize in eye disorders. LASIK is generally a preferred alternative to photorefractive keratectomy, or PRK, as it is less pain-producing and requires less time to recover completely. Prior to having LASIK surgery, the patient's corneas are analyzed with a computer driven sophisticated scanner and a corneal map is devised. This stage of the procedure also detects astigmatism and also additional irregularities in the shape of the cornea. The surgeon uses this data to compute the amount and location of corneal tissue to be eliminated during the operation. The surgery is done while the patient is awake and alert, nonetheless, the patient is usually given a modest sedating drug and anesthetic drops in the eyes. The eye surgeon operates the laser machines, which do all of the incisions. A flap is sliced in the cornea, which is the clear front part of the eye, using a laser or a blade. Afterwards, an excimer laser remodels the cornea. The laser vaporizes tissue without inducing damage or injury. Although relatively uncommon, some complications may occur with LASIK or other laser or non laser eye surgeries. Some of the more typically reported complications of LASIK include: infection, dry eyes and light sensitive eyes, under or over correction, fluctuating vision, halos or starbursts around lights, doubled vision, and difficulties with the flap that was produced during the surgery. Although LASIK technology is getting better rapidly, studies have not completely defined long-term complications or damage. The surgical procedure can't be reversed.

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