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目的针对白内障超声乳化吸除联合人工晶状体植入术,比较不同位置的3.2mm透明角膜切口对术后角膜散光的影响。方法将白内障患者49例(71眼)分成2组进行手术,A组采用上方透明角膜切口,B组在最大角膜曲率子午线方位做切口。对术前、术后角膜散光变化进行比较。结果 B组患者术后角膜散光略有减少,A组患者术后角膜散光明显增加,差异有统计学意义(P<0.01)。结论白内障超声乳化手术中采用最大角膜曲率子午线方位透明角膜切口较传统上方透明角膜切口可减少部分角膜散光。
Objective To investigate the effect of phacoemulsification combined with intraocular lens implantation on corneal astigmatism after 3.2mm clear corneal incision at different positions. Methods 49 patients (71 eyes) with cataract were divided into two groups. Group A received upper clear corneal incision and group B incision at maximum corneal curvature meridian direction. Preoperative and postoperative corneal astigmatism changes were compared. Results Postoperative corneal astigmatism was slightly decreased in group B, and postoperative corneal astigmatism was significantly increased in group A (P <0.01). Conclusion The most corneal meridian azimuth clear corneal incision in cataract phacoemulsification surgery can reduce some corneal astigmatism compared with the traditional upper clear corneal incision.