方法：分析2014-06/2015-06间于我院行白内障超声乳化摘除及人工晶状体植入术的年龄相关性白内障患者164例206眼，术前分别用IOL Master、传统的超声生物测量仪和角膜曲率计测量眼轴长度和角膜曲率，使用SRK-Ⅱ公式计算人工晶状体度数。对患者施行超声乳化白内障摘除术后，按照IOL Master测量得出的人工晶状体度数植入可折叠人工晶状体，术后3mo检查患者的视力和屈光状态。

结果：IOL Master和超声波检查法测得的眼轴分别为23.86±1.05mm和23.50±0.83mm，两者对比差异有统计学意义(P=0.025)。IOL Master 和手动角膜曲率计测得的角膜曲率分别为44.18±1.35D和43.70±1.41D，两者对比差异有统计学意义(P=0.01)。术后3mo患者平均绝对屈光误差分别为0.41±0.30D 和0.93±1.10D，两者对比差异有统计学意义(P=0.027)。

结论：IOL Master具有非接触性、操作简便、安全而且易于被患者接受的特点，对眼轴长度和角膜曲率测量的精确性较高，从而对人工晶状体度数测算更精确，提高了对患者术后屈光状态的可预测性。

METHODS:Data was analyzed from 164 patients(206 eyes)with age-related cataracts who underwent phacoemulsification and intraocular lens(IOL)implantation in our hospital from June 2014 to June 2015. Before surgery, axial length and corneal curvature were measured with IOL Master and combined application of ultrasonic or manual keratometry, respectively. Phacoemulsification and foldable lens implantation were done in the patients. IOL power calculation was carried out using the SRK-Ⅱ formula with the basis of IOL Master data. The visual acuity and refractive outcome were followed-up for 3mo postoperatively.

RESULTS:There was a significant difference between the two methods on axial length measurement which was 23.86±1.05mm by IOL Master and 23.50±0.83mm by ultrasound(P=0.025). There was also a significant difference between the two methods on corneal curvature measurement which was 44.18±1.35D by IOL Master and 43.70±1.41D by keratometry(P=0.01). The mean absolute error(MAE), at 3mo after operation, was 0.41±0.30D and 0.93±1.10D by the IOL Master and ultrasound groups, respectively, there was a significant difference between the two methods(P=0.027).

CONCLUSION:The IOL Master is a non-contact, safe, easy-to-do and patient-friendly methods for axial length and corneal curvature measurement with high accuracy, thus it can calculate the IOL power more accurate and improve the predictive value for postoperative refraction.