Wang W, Zheng W, Pang G, Wang Z, Sun Y, Jin Y, Li W
Department of Ophthalmology, Peking Union Medical College Hospital, Beijing.
Chin Med J (Engl). 1995 Aug;108(8):601-5.
A total of 750 six-month follow-up records of myopia treated with excimer laser photorefractive keratectomy (PRK) were analyzed. By 6 months, in group 1 (up to -6.00D, 587 eyes), uncorrected visual acuity was improved to 20/20 or better in 86.7% of treated eyes and 95.4% fell into the range of refraction of +/- 1.00D. In group 2 (-6.25D to -11.00D, 163 eyes), 74.5% of treated eyes had uncorrected visual acuity of 20/20 or better and 89.4% of the eyes were within +/- 1.00D. The designed predictability of the two groups was the same (P > 0.1). The refractive stability from 3 to 6 months between the two groups was not statistically different, and no severe complications were observed in these two groups. The excimer laser PRK for correcting myopia up to -11.00D appears to be effective, predictable, stable and safe in this study. The ideal outcome may result from the precise ablation quality of excimer laser, its computerized surgical manipulation and an appropriate postoperative management including detection of refractive indices by corneal topography and modulation by steroid.
对750例接受准分子激光屈光性角膜切削术（PRK）治疗近视的六个月随访记录进行了分析。到6个月时，在第1组（近视度数达-6.00D，共587只眼）中，86.7%的治疗眼裸眼视力提高到20/20或更好，95.4%的眼屈光度在±1.00D范围内。在第2组（近视度数-6.25D至-11.00D，共163只眼）中，74.5%的治疗眼裸眼视力为20/20或更好，89.4%的眼屈光度在±1.00D范围内。两组的设计预测性相同（P>0.1）。两组在3至6个月间的屈光稳定性无统计学差异，且两组均未观察到严重并发症。在本研究中，准分子激光PRK矫正近视度数达-11.00D似乎有效、可预测、稳定且安全。理想的结果可能源于准分子激光精确的消融质量、计算机化的手术操作以及包括通过角膜地形图检测屈光指数和使用类固醇进行调节在内的适当术后管理。
