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Laser-assisted in situ keratomileusis, better known by the acronym Lasik, isnt for everyone. Since it involves peeling back a flap of cornea and reshaping the underlying material with a laser, it's not recommended for people with problems that can cause the eye to change shape, such as diabetes.
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Keep this firmly in mind while considering Lasik surgery: the procedure is too new to know whether there are any long-term effects beyond 5-10 years. However, radial keratotmy, from which it was derived, is time-tested and shows few negative long-term effects,