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目的观察人工晶状体术后角膜散光的长期演变以及选择性拆线与不拆线对其的影响。方法人工晶状体手术患者８３例（９６眼），根据术后６周时角膜曲率检查结果分为拆线组及不拆线组，分别测量两组患者术前、术后６周；３，６，１２及２４个月时的角膜曲率。结果术后３，６个月时拆线组的平均角膜散光度较不拆线组显著降低，且转为逆规性散光者多。术后１２～２４个月时，两组的平均角膜散光度无明显区别，逆规性散光的比例分别为６０．７８％及６０．００％。结论选择性拆线可减少术后短期内角膜循规性散光的度数，并促使其向逆规性方向转化，但对术后远期结果无影响。
Objective To observe the long-term evolution of intraocular lens (IOL) astigmatism and the effects of selective removal and non-removal of IOL. Methods Eighty-three patients (96 eyes) were treated by intraocular lens (IOL) surgery. According to the results of corneal curvature examination at 6 weeks postoperatively, they were divided into two groups: Corneal curvature at 12 and 24 months. Results The average corneal astigmatism of the suture removal group at 3 and 6 months after operation was significantly lower than that of the non-suture removal group, and the number of astigmatism was much higher. The mean corneal astigmatism was no significant difference between 12 and 24 months after operation, with the rates of astigmatism as 60.78% and 60.00% respectively. Conclusion Selective removal of stitches can reduce the degree of postoperative corneal astigmatism astigmatism, and to promote its transformation to the direction of the reverse, but no effect on postoperative long-term results.