巩膜遂道切口的位置对白内障超乳术后散光的影响

Effect on surgery induced astigatism in PHACO and implantation of IOL of Scleral tunnel incision's position.

目的探讨巩膜遂道切口的位置对白内障超乳术后手术源性散光(Surgically induced astigmatism,SIA)的影响。方法将74例拟行白内障超乳手术的患者随机分成二组:第一组采用10-11点处直线型巩膜切口(I组);第二组采用12点的直线型巩膜切口(II组):分别观察术后1周、2周、1月、3月、6月二组病例的裸眼视力,SIA等情况。结果术后不同时期二组病例的裸眼视力≥0.5的百分比差异无统计学意义(P>0.05),而SIA差异有统计学意义(P<0.05)。结论10-11点的巩膜切口行白内障超乳手术,在早期可较12点处巩膜切口取得较好的屈光稳定性,从长远来看则无显著性差异。

Objectiye： To investigate the effects on surgery induced astigamatism（SIA） in PHACO and implantation of IOL of scleral, tunnel incision＇ s position. Methods ：74 case were divided into two groups ,the first group with line scleral tunnel incision at 10 -11 o＇clock （Ⅰ）. and the second group with line scleral tunnel incision at 12 o＇clock （Ⅱ）. All patients were performed PHACO and implantation of IOL The uncrrected visual acuity. SIA were examined at one week , two weeks, one month, three months and six months after operation. Results：There was no significant difference in UCVA between two groups during periods after operation （ P 〉 0. 05 ） , significant difference in SIA （ P 〈 0.05 ）. Conclusions ： with the method of scleral incision at 10- 11 o＇ clock in PHACO and implantation of IOL , the refraction Were more stable than the incision at 12 o＇ clock in the early period after operation. There wers no significant difference between two groups in the late period after operation.