选择性手术切口对老年性白内障术后散光控制的临床研究

The clinical study in the effect of the chosen incision on corneal astigmatism after cataract surgery

目的探讨选择性手术切口对老年性白内障术后散光控制的作用。方法老年性白内障195例，随机分成选择性手术切口组96例（A组）和上方角膜缘切口组（B组）99例，通过术前、术后1周、1、3个月分别行角膜地形图检查，观察患者术后散光的变化。结果A组术前平均角膜散光为（1．15±0．07）D，B组术前平均角膜散光为（1．16±0．07）D，两组差异无统计学意义。A组术后1周、1、3个月的平均角膜散光分别为（2．164-0．09）D、（0．96±0．07）D、（0．89±0．06）D；B组术后1周、1、3个月的平均角膜散光分别为（1．33±0．09）D、（1．24±0．07）D、（1．24±0．08）D，两组差异有统计学意义。结论选择性手术切口能在一定程度上控制白内障术后散光。，

Objective To evaluate the effect of the chosen incision on corneal astigmatism after cat- araet surgery. Methods 195 patients of age-related cataract were randomly divided into two groups： the cho- sen incision group（ Group A, 96 cases） and superior limbus incision group（ Group B, 99 cases）. On the day before operation, 1 week, 1 month and 3 months after operation, each patient was examined with corneal topography to observe the corneal astigmatism. Results Preoperative corneal astigmatisms were （1.15 ± 0.07 ） D in group A and （ 1.16 ± 0.07） D in group B. There was no statistically significant different （ P 〉 0.05 ）. 1 week postoperatively, the astigmatism value were （2.16 ±0.09） D in group A and （1.33±0.09） D in group B. 1 month postoperatively, the astigmatism value were （0.96 ±0.07） D in group A and （1.24 ±0.07） D in group B. 3 month postoperatively, the astigmatism value were （0. 89 ± 0.06） D in group A and （ 1.24 ± 0.08） D in group B. The differences between the two groups were statistically significant （P 〈 0.01 ）. Conclusion The chosen incision could reduce postoperative astigmatism to a certain extent.