眉状小切口与传统大切口白内障术后角膜散光的比较

A comparison of astigmatism after cataract surgery with frown small incision and traditional large incision

目的:探讨不同大小切口对白内障术后角膜散光的影响。方法:将103例(112眼)分为二组,第一组采用改良的巩膜隧道式眉状小切口(弦长6mm),第二组采用传统的角巩膜缘阶梯状大切口(10～12mm),进行现代白内障囊外摘除联合后房型人工晶体植入术,用角膜曲率仪分别观察二组病例术后四个月内不同时间的角膜散光情况。结果:术后不同时间小切口组的散光值明显小于大切口组(P<0.01),一个月时小切口组的散光已基本稳定,为0.93±0.82D,与术前比较无显著差异,其裸眼视力达到0.5以上的有41眼,占65%。大切口组术后三个月时散光才稳定,但仍有2.08±0.94D的散光。结论:眉状小切口手术能在术后早期获得较快的视力恢复,不失为一种较好的手术方法。

Purpose: To study the effect of different incision size on the corneal astigmatism after cataract surgery. Methods. 112 eyes were divided into two groups based on the use of modified frown scleral tunnel inci- sion (a chord length 6mm) or traditional large corneoscleral pocket incision (10-12 mm). Postoperative astigmatic changes was observed separatively during the four months after extracapsular cataract extraction and posterior chamber lens implantation. Results.Compared with large incision group, the postoperative astigmatism were much smaller in small incision group at different time and was stable in one month, which was 0.93 ?.82 (D), which had no significant difference from preope-rative astigmatism. 41 eyes(65%) achieved 0.5 or better uncorrected visual acuity in one month. However, the astigmatism in large incision group was stable after three months, which was still 2.08±0.94(D). Conclusion. The small frown incision with rapid visual rehabilitation in the early postoperative period may constitute a better operative method.