单词	photorefractive keratectomy
释义	photorefractive keratectomy noun pho·​to·​re·​frac·​tive ker·​a·​tec·​to·​my ˌfō-tō-ri-ˌfrak-tiv-ˌker-ə-ˈtek-tə-mē  : surgical removal of part of the corneal surface using an excimer laser in order to correct for myopia compare radial keratotomy Word History First Known Use 1986, in the meaning defined above Medical Definition photorefractive keratectomy noun pho·​to·​re·​frac·​tive keratectomy -ri-ˌfrak-tiv-  : surgical ablation of part of the corneal surface using an excimer laser in order to correct for myopia —abbreviation PRK compare radial keratotomy
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