RK治疗近视眼的近期疗效

SHORT-TERM RESULTS OF RADIL KERATOTOMY(RK)FOR THE TREATMENT OF MYOPIA

报告放射状角膜切开术（ＲＫ）治疗１４１例２２４只近视眼的近期疗效。术前平均眼屈光度一５．９１Ｄ，平均角膜屈光度４４．１５Ｄ，平均裸眼视力３．８９。术后三天平均眼屈光度为－０。３０Ｄ，平均角膜屈光度３９．５４Ｄ，分别比术前降低５．６１Ｄ和４．６１Ｄ。平均裸眼视力４．８５，比术前提高０．９７。术后三个月时平均眼屈光度－０．７６Ｄ，平均角膜屈光度３９．９３，与术后三天时比较均有回升，裸眼视力亦有下降。经统计学分析，差异有显著性。分组统计表明，近视度数越大，术后屈光度降低越多，但回升幅度也相对较大。本组未出现导致视力障碍的并发症。Ｐ＜ｏ．０５，本组术后３个月时观察，与术后３天时比较，总平均眼屈光度、总平均角膜屈光度与各组平均眼屈光度均有不同程度回升，术前近视度数越大，回升越多。裸眼视力也有回落。经统计学处理，除①组角膜屈光度和裸眼视力外，其改变均有显著性意义。３讨论３．１国外开展ＲＫ已有２０余年的历史，现已证实这是一种安全有效的手术。国内刚刚在近几年广泛开展，已发表的资料也表明了同样的观点（４，５，６）。本组术后三天时观察，三项指标均表明手术的疗效是肯定的，与文献介绍的结果相近（４，５，６）。不同屈光度患者术后的屈?

41 cases(224 eyes)of myopia had undergone radial keratotomy and their short-term resultswere reported. Before operation,the mean spherical refraction was-5.91D,and the mean keratometrvwas 44. 15D with the mean uncorrected visual acuity of 3.89.In 3 days after operation,the meanspherical refraction was-0.30D and decreased by 5.61D,and the mean keratometry was 39. 54D anddecreased by4.61D.The mean uncorrected visual acuity was 4.84,increased bv 0.97.In 3 monthsafter operation,the mean spherical refraction was-0.76D and the mean keratometry was 39. 93,bothincreased and uncorrected visual acuity decreased more than that in 3 days after operation with signifi-cant differences(P<0.05)