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分析准分子激光角膜切削术治疗近视的临床相关因素。对656眼PRK手术，分析术前及术后1年临床资料并对影响效果的主要因素进行多元逐步回归分析。术后1年，裸眼视力≥0．50者593眼（90．3％）、屈光状态在±0．5D范围内者586眼（89．3％），角膜haze0～1级者607（92．5％），中、低度近视组各主要临床指标均优于高度近视组（P＜0．01）。多元逐步回归分析显示近视度数、年龄、角膜切削深度、术后角膜增生、程度及角膜haze等与PRK术后效果密切相关，应注意考虑或控制。
Analysis of clinical factors related to excimer laser keratectomy for the treatment of myopia. The 656 PRK surgery, analysis of preoperative and postoperative 1 year clinical data and the main factors affecting the effect of multiple stepwise regression analysis. One year after surgery, 593 eyes (90.3%) had uncorrected visual acuity ≥0.50, 586 eyes (89.3%) had refractive status within ± 0.5D, 607 (92 .5%). The main clinical indexes of middle and low myopia group were better than those of high myopia group (P <0.01). Multivariate stepwise regression analysis showed that myopia, age, depth of corneal cutting, postoperative corneal hyperplasia, corneal haze and so on are closely related to the effect of PRK, and should be considered or controlled.