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通过对472例（556眼）白内障患者随机分组：施行不同切口，术前与术后随访观察角膜屈折力的变化。发现角膜缘切口组术后早期平均散光度较高，顺规性散光发生率高，且向逆规性散光转化。而巩膜隧道式切口组与术前对照无明显差异。并讨论引起散光的原因。
A total of 472 cases (556 eyes) of cataract patients were randomly divided into different incisions. The changes of corneal refractive power were observed before and after surgery. Found that the limbal incision group early postoperative average astigmatism higher, the incidence of astigmatism astigmatism, and to reverse the rules of astigmatism. The scleral tunnel incision group and preoperative control no significant difference. And discuss the causes of astigmatism.