LASIK is the most commonly performed refractive surgery procedure. The name is actually short for "laser-assisted in situ keratomileusis."
LASIK has advantages over other procedures, including a relative lack of pain afterward and the fact that good vision is usually achieved almost immediately, or at least by the very next day.
For an ideal candidate, there are many advantages to having laser vision correction. Laser vision correction gives most patients the freedom to enjoy their normal daily activities without the dependence of corrective lenses. It also allows people to pursue careers that they would not have been eligible for without excellent vision. In general, laser vision correction can make your life much simpler and more enjoyable.
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An instrument called a microkeratome is used in LASIK eye surgery to create a thin, circular flap in the cornea. Another, newer way of making the flap is with a laser. The surgeon folds the flap back out of the way, then removes some corneal tissue underneath using an excimer laser. The excimer laser uses a cool ultraviolet light beam to precisely remove ("ablate") very tiny bits of tissue from the cornea to reshape it. When the cornea is reshaped in the right way, it works better to focus light into the eye and onto the retina, providing clearer vision than before. The flap is then laid back in place, covering the area where the corneal tissue was removed.
