THE EXCIMER LASER - SUMMARY The excimer laser uses argon and fluoride gases mixed together in a high voltage cavity to produce a cool (non-thermal) ultraviolet beam of light. Laser preparation involves programming the laser to the individual characteristics of each patient's eyes. Computer-controlled pulses of cool laser light are then applied to delicately reshape the curvature of the eye. Deeper cell layers remain virtually untouched. The excimer laser is so precise that each pulse can remove 39 millionths of an inch of tissue in 12 billionths of a second. Since a layer about as slender as a human hair is typically removed, the cornea maintains its original strength. This enables the surgeons to achieve remarkable accuracy while maintaining excellent control throughout the procedure. The procedure is painless because this is a cool laser. With both PRK and LASIK, the greater your prescription, the longer your procedure takes. Even the most severe prescriptions require only about one minute of laser time and utilize only a topical anesthetic in the form of eye drops. Although no procedure is perfect, excimer laser technology allows for an unparalleled degree of precision and predictability. This makes laser vision correction, in our opinion, the best procedure available for suitable candidates.
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