单词	keratomileusis
释义	keratomileusis /ˌkɛrətəʊmʌɪˈluːsɪs / noun [mass noun] The surgical reshaping of the cornea, carried out in order to correct a refractive error.The report provides information on the safety and effectiveness of four types of refractive eye surgery: radial keratotomy, photorefractive keratectomy, laser in situ keratomileusis and intraocular lenses.... From the 1940s to the 1970s, different techniques in keratomileusis evolved in surgical alteration of the cornea. The laser in-situ keratomileusis procedure uses an excimer laser to make a thin flap in the cornea and etch away a predetermined pattern of tissue beneath the flap. Origin 1990s: from kerato- + Greek smileusis 'carving'.
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