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目的为了解缝合与不缝合的不同长度小切口白内障囊外摘除及人工晶体植入术后角膜散光的改变。方法用角膜曲率计测量角膜散光，同时进行检影验光，观察了127只眼术后6个月内角膜散光的变化。结果巩膜隧道式小切口加垂直缝线多造成循规性散光，小切口无缝线多造成逆规性散光，术后早期近规性散光有逐渐增大的趋势；8mm切口的手术性散光显著大于6．5mm切口的手术性散光（P＜0．05）。结论巩膜隧道式小切口宜缝合，尤其是切口大于6．5mm时，以免造成较大的逆规性角膜散光。
Objective To understand the changes of corneal astigmatism after extracapsular cataract extraction and intraocular lens implantation with different lengths of suture and non-suture. Methods The corneal astigmatism was measured by keratometer, and retinoscopy was performed at the same time. The change of corneal astigmatism was observed within 127 months after operation. Results Small scleral tunnel incision with vertical sutures caused by more regular astigmatism, small incision suture caused by more irregular astigmatism, early postoperative early astigmatism tends to increase gradually; surgical astigmatism 8mm incision was significant Surgical astigmatism greater than 6.5 mm incision (P <0.05). Conclusion scleral tunnel incision should suture, especially when the incision is greater than 6.5mm, in order to avoid causing a larger retrograde corneal astigmatism.