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excision of a portion of the cornea; kerectomy.
photorefractive keratectomy a procedure to correct errors of refraction in the eye by using an excimer laser to remove a portion of the anterior part of the cornea, which changes the refraction by creating a new radius of curvature.
kerectomy(kē-rĕk′tō-mē) [Gr. keras, horn, + ektome, excision]
Excision of a portion of the cornea.