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目的对准分子激光屈光性角膜切削术（ｐｈｏｔｏｒｅｆｒａｃｔｉｖｅｋｅｒａｔｅｃｔｏｍｙ，ＰＲＫ）和准分子激光原位角膜磨镶术（ｌａｓｅｒｉｎｓｉｔｕｋｅｒａｔｏｍｉｌｅｕｓｉｓ，ＬＡＳＩＫ）治疗近视的疗效进行对比研究。方法对术前近视度为－１．５０Ｄ～２０．００Ｄ的患者的６００只眼，按近视度分为三组：中低度近视组（－１．５０Ｄ～－６．００Ｄ）２３４只眼，１９４眼行ＰＲＫ手术，４０眼行ＬＡＳＩＫ手术；高度近视组（－６．２５Ｄ～－１０．００Ｄ）２４９只眼，１０７眼行ＰＲＫ手术，１４２眼行ＬＡＳＩＫ手术；超高度近视组（－１０．２５Ｄ～－２０．００Ｄ）１１７只眼，８眼行ＰＲＫ手术，１０９眼行ＬＡＳＩＫ手术。术后随访观察１２～２３个人。结果术后１２个月，三组患者的屈光度在±１Ｄ以内，行ＰＲＫ手术的患者分别为１００％、７３．８％、５０．０％。ＬＡＳＩＫ手术的患者分别为１００％、８８．７％、７４．３％。屈光度在±０．５０Ｄ以内者，行ＰＲＫ手术者分别为８６．６％、６２．６％、３７．５％，行ＬＡＳＩＫ手术者，分别为８７．５％、８０．３％、５０．５％。术后１２个月，三组的裸眼视力０．５或以上者，行ＰＲＫ手术者分别为１００％、７６．?
Objective To compare the curative effects of photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) on myopia. Methods Six hundred and sixty eyes of patients with preoperative myopia of -1.50D ~ 20.00D were divided into three groups according to myopia: 234 eyes of low and middle myopia group (-1.50D ~ -6.00D) 194 eyes underwent PRK surgery and 40 eyes underwent LASIK. 249 eyes of high myopia group (-6.25D ~ -10.00D), 107 eyes underwent PRK surgery and 142 eyes underwent LASIK. 117 eyes, 8 eyes underwent PRK surgery and 109 eyes underwent LASIK surgery. Postoperative follow-up observation of 12 to 23 individuals. Results At 12 months after operation, the refraction of the three groups of patients was within ± 1D. The patients undergoing PRK surgery were 100%, 73.8% and 50.0%, respectively. LASIK patients were 100%, 88.7%, 74.3%. Refractive index within ± 0.50D were PRK surgery were 86.6%, 62.6%, 37.5%, LASIK surgery were 87.5%, 80.3%, 50.5 %. At 12 months after operation, the PRK surgeries were 100% and 76 respectively in the three groups with uncorrected visual acuity of 0.5 or more. ?