laser in situ epithelial keratomileusis: a technique of laser refractive eye surgery used to correct both short sight (myopia) and long sight (hypermetropia). A flap of corneal epithelium is raised, the surface of the cornea is reshaped using an *excimer laser, and the epithelium is then replaced.
a form of ultraviolet laser that can remove very thin sheets of tissue. This can be used to alter the curvature of the corneal surface, for example to treat long- or short-sightedness (see LASEK; LASIK), or to remove diseased (e.g. calcified) tissue from the corneal surface. See keratectomy.... excimer laser
any surgical procedure that has as its primary objective the correction of any refractive error. It includes such procedures as clear lens extraction, *LASIK, *LASEK, and photorefractive *keratectomy.... refractive surgery
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