目的：探讨缝线效应对外伤性白内障人工晶状体度数测算准确性的影响。

方法：前瞻性研究。收集2017-03/2019-03拟在我院实施Ⅱ期人工晶状体植入术的角膜穿通伤缝合联合白内障摘除术后患者57例57眼并进行分组，观察组于术前1wk拆除角膜缝线，对照组于术中拆除角膜缝线。比较观察组患者角膜缝线拆除前后角膜曲率、角膜散光、前房深度、眼轴长度及理论人工晶状体度数的变化，观察两组患者术后裸眼视力和角膜散光情况。

结果：角膜缝线拆除前后，观察组患者角膜曲率(43.15±1.32D vs 45.05±1.20D)、角膜散光(-5.23±2.52D vs -2.04±1.44D)及理论人工晶状体度数(22.24±2.36D vs 20.40±1.46D)均有差异(P<0.05)，而前房深度、眼轴均无差异(P>0.05)。术后1d，1wk，1、3mo，观察组患者裸眼视力均优于对照组，角膜散光均低于对照组(P<0.05)。

结论：角膜缝线效应对外伤性白内障患者角膜散光和理论人工晶状体度数测算及术后屈光状态影响显著。

METHODS: In this prospective study, 57 patients who were waiting for secondary intraocular lens implantation surgery with sutured corneal penetrating injury and extracted traumatic cataract in our hospital from March 2017 to March 2019, were divided into observation group and control group. Corneal sutures were removed one week before operation in the observation group, while corneal sutures were removed during the operation in the control group. The corneal curvature, corneal astigmatism, anterior chamber depth, axial length and theoretical intraocular lens power in the observation group were compared before and after suture removal; the postoperative uncorrected visual acuity and corneal astigmatism were compared between the observation group and the control group.

RESULTS: There were significant changes in corneal curvature(43.15±1.32D vs 45.05±1.20D), corneal astigmatism(-5.23±2.52D vs -2.04±1.44D)and theoretical intraocular lens power(22.24±2.36D vs 20.40±1.46D)before and after suture removal(P<0.05), while there were no difference in anterior chamber depth and axis length in the observation group(P>0.05). The uncorrected visual acuity was better, and the corneal astigmatism was lower 1d, 1wk, 1mo and 3mo post-operative in the observation group than that in the control group(P<0.05).

CONCLUSION: Corneal suture tension has significant effect on corneal astigmatism, theoretical intraocular lens power calculation and postoperative refraction in traumatic cataract patients.