目的：探讨Pentacam在精确选择Toric人工晶状体型号及轴位中的作用。

方法：选择我院2018-01/12拟行白内障超声乳化吸除术的白内障患者46例53眼，术前经AL-Scan和全自动角膜曲率仪检查角膜散光≥1.0D，并应用Pentacam对角膜散光进行评估指导精确选择Toric人工晶状体的型号及植入轴位。手术均由同一手术医师完成。术后跟踪随访3mo。收集术前及术后1d，1wk，1、3mo裸眼视力、最佳矫正视力、全眼散光以及预计残留散光、术后残余散光等，术后主观脱镜率、视觉质量评估等。

结果：手术前后患者角膜散光无显著性变化，全眼散光减少，UCVA及BCVA明显提高(P<0.05)； 术后残留散光与术前预计残余散光(TIA)无差异(P>0.05)，术后远视脱镜率及视觉质量明显提高。

结论：Pentacam评估白内障患者术前的角膜散光更加全面准确，有助于指导准确选择Toric人工晶状体的型号，提高术后预期效果。

METHODS: Totally 53 eyes of 46 cataract patients who were scheduled to receive phacoemulsification from January 2018 to December 2018 were selected in our hospital. Before the operation, corneal astigmatism was greater than 1.0D according to the examination results by AL-Scan and automatic corneal curvature instrument, and Pentacam was used to evaluate the corneal astigmatism to guide the accurate selection of Toric IOL model and the axial position to be implanted. Surgery was done by the same doctor. After operation, the patients were traced and visited for 3mo to collect the uncorrected visual acuity(UCVA), the best corrected visual acuity(BCVA), the whole-eye astigmatism, the corneal curvature and target induced astigmatism(TIA)before and after the operation as well as the postoperative astigmatism, the rate not relying on the glasses, visual quality assessment and so on.

RESULTS: There was no obvious change on patients' corneal astigmatism before and after the operation. The whole-eye astigmatism was reduced and UCVA and BCVA were obviously improved. The difference was statistically meaningful(P<0.05). The postoperative residual astigmatism and TIA were statistically tested, and the results showed no statistical significance(P>0.05). The rate of distant vision defecation and visual quality were significantly improved.

CONCLUSION: Pentacam can evaluate the corneal astigmatism more comprehensively and accurately, which is helpful to guide the accurate selection of Toric artificial lens model, and to improve the postoperative expected effect.