目的:比较小切口非超声乳化术不同位置的切口对角膜散光的影响。方法:将80例80眼白内障患者随机分两组各40眼,A组:顺规散光者切口选在上方,逆规散光者切口选在颞侧;B组:切口全部选在上方。均采用距角膜缘2mm反眉形6.0mm的巩膜隧道切口,不缝合。观察术前及术后3mo的视力、角膜散光。结果:A组术前和术后3mo的散光位为1.15±0.53D,0.89±0.50D,B组为1.13±0.57D,1.64±0.68D。A组视力≥0.5者34眼(85%),B组:24眼(60%),A,B组差异有统计学意义。结论:白内障手术切口选在角膜曲率最大的子午线上,可矫正术前已有散光并获得更好的术后视力。

AIM:To compare the effects of different incision position in small incision cataract surgery (SICS) on corneal astigmatism. METHODS:A total of eighty cases (80 eyes) who underwent SICS and intraocular lens implantment were randomly diveded into two groups with 40 eyes of each,group A:incision location was chosen at the maximum curvature meridian,superior incision for with-the-rule astigmatism,temporal incision for against-the-rule astigmatism;group B:superior incision was chosen using 6.0mm scleral tunnel incision without suture.Corneal astigmatism and uncorrected visual acuity were detected preoperation and 3 months postoperation. RESULTS:Before operation and 3 months after operation,the average corneal astigmtism were 1.15±0.53D,0.89±0.50D in the group A and 1.13±0.57D,1.64±0.68D in the group B. Uncorrected visual acuity (≥0.5) was observed at 3 months after operation in two groups;group A:34 eyes (85%);group B:24 eyes(60%).Visual acuity of group A was better than that of the group B. CONCLUSION:The incision location for cataract surgery is better to choose at the maximum curvature meridian to correct preoperative astigmatism and obtain better postoperative vision.

R779.66