LASIK or Lasik (laser-assisted in situ keratomileusis), commonly referred to simply as laser eye surgery, is a type of refractive surgery for the correction of myopia, hyperopia, and astigmatism. LASIK is performed by an ophthalmologist using a laser. The laser is used to reshape the cornea in order to improve visual acuity (the clearness and sharpness of the image that is seen). LASIK is similar to other surgical corrective procedures such as photorefractive keratectomy (PRK), (also called ASA, Advanced Surface Ablation) but provides benefits such as reduced pain and quicker recovery. Both LASIK and PRK represent advances over radial keratotomy in the surgical treatment of refractive errors of vision. Thus, for some patients, LASIK is an alternative to eyeglasses or contact lenses. In the 1950s, the microkeratome and keratomileusis techniques were developed in Bogota, Colombia by the Spanish ophthalmologist Jose Barraquer.
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