What is LASIK surgery? LASIK or Laser-Assisted In Situ Keratomileusis is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses. See how LASIK surgery is performed.

LASIK or Laser-Assisted In Situ Keratomileusis is a surgical procedure intended to reduce a person's dependency on glasses or contact lenses.

LASIK surgery is most commonly performed as a cure for myopia (nearsightedness), but can also be used to cure hyperopia (farsightedness) or astigmatism (corneal irregularities).

LASIK is a procedure that permanently changes the shape of the cornea using a special laser and thus focusing the light rays exactly on the retina.

The steps of the procedure are as follows:

• A suction ring is placed on the eye to stabilize and check the eye pressure.
• The microkeratome, a cutting instrument, is attached to the suction ring.
• The blade of the microkeratome is used to cut a flap in the cornea.
• The exposed inner layer of the cornea is then reshaped with an excimer laser.
• The corneal flap is returned to its original position.

LASIK is an ambulatory procedure; the patient can walk into the surgery center, have the procedure and walk out again and is awake the whole time. Occasionally, the doctor may administer a mild oral sedative.

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