AIM: To explore the Accuracy of OPD-Scan III labeling method in corneal astigmatism before Toric intraocular lens implantation(IOL).

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.