目的：探讨OPD-Scan Ⅲ标记法在Toric IOL植入术前对角膜散光标记的准确性。

方法：于2017-01/2018-05选取白内障患者100例按照随机数字表法分为对照组和观察组，各50例。对照组采用裂隙灯水平窄光带标记法。观察组采用OPD-Scan Ⅲ标记法。比较两组患者手术前后角膜散光和裸眼视及术后IOL轴位偏差度。

结果：术后3mo，对照组和观察组患者角膜散光(0.56±0.29、0.58±0.27D)均较术前明显下降，裸眼视力(0.12±0.09、0.11±0.08)均较术前明显改善(P<0.001)，但两组之间无明显差异(P>0.05)。术后1d，3mo，两组患者IOL轴位偏差度无明显差异(P>0.05)。

结论：OPD-ScanⅢ与裂隙灯水平窄光带标记法在Toric IOL植入术前标记角膜散光同样精准，且无创伤性。

METHODS: Totally 100 patients with cataract were randomly divided into the control group and the observation group according to the random number table, 50 cases each. The control group used a slit lamp horizontal narrow band labeling method. The observation group used the OPD-Scan III labeling method. The preoperative and postoperative corneal astigmatism and naked eye visual acuity were compared between the two groups. The axial dislocations of the two groups were measured at 1mo and 3mo after operation.

RESULTS: At 3mo after operation, corneal astigmatism(0.56±0.29、0.58±0.27D)decreased significantly in the two groups. The visual acuity of the naked eye was significantly higher than that before surgery. The corneal astigmatism(t=0.356, P=0.721)and the visual acuity of the naked eye were compared between the two groups(t=0.587, P=0.558). The IOL axial deviations were compared between the two groups at 1d and 3mo after surgery(P>0.05).

CONCLUSION: Before Toric IOL implantation, OPD-Scan III and slit lamp horizontal narrow band labeling method are equally accurate in labeling corneal astigmatism and without traumatic.