【摘要】 目的比较非接触性光学相关生物测量仪(IOL-Master)与传统超声(A/B超)在测量高度近视眼人工晶体度数的准确性,了解IOL-Master的特性及其临床应用价值。方法112例112只高度近视眼并发白内障患者随机分为两组,术前分别用IOL-Master、A/B超测量仪及角膜曲率计测量眼轴长度和角膜曲率,使用SRK-Ⅱ或SRK/T公式计算人工晶体度数。对患者施行超声乳化白内障吸出术,术中分别按上述两种测量方法测得结果并植入可折叠人工晶体。术后3个月随诊检查视力及眼屈光度并作分析。结果IOL-Master和A/B超测量法,测得的眼轴长度两者对比差异无显著性(P>0.05);IOL-Master和角膜曲率计测量角膜曲率分别为(44.32±1.56)D、(43.97±1.39)D,两者对比差异无显著性(P>0.05);按两种测量方法随机分组的两组病人,术后3个月的平均绝对屈光误差两组对比差异无显著性(P>0.05)。结论IOL-Master是一种高精确性、非接触性、操作简单、安全可靠的人工晶体度数测量工具。更多还原

【Abstract】 Objective To evaluate the clinical application and characteristics of IOL-Master by comparing with traditional ultrasound biometry in their accuracy.Methods 112 patients(112 eyes) with high myopia associated with cataract were randomly divided into two groups.The length of ocular axis and keratometric power in 56 patients(56 eyes) were measured preoperatively by IOL-Master,ultrasonic biometry and auto-keratometer.Artificial IOL power was calculated according to the SRKⅡor SRK/T formula.Cataract surgery,i.e phaco-emulsification and phacectomy was performed in all patients and foldable lens were implanted according to the results of two methods.Their visual acuity and refractive outcome were follow-up three months after operation and analyzed.Results There was no significant difference in measurement of ocular axial length between two methods(P>0.05).The keratometric powers measured by IOL-Master and keratometry were(44.32±1.56)D and(43.97±1.39)D(P>0.05),showing no significant discrepancy.Significant difference of the MARE in IOL-Master group and traditional ultrasound biometry group was also not found.Conclusion IOL-Master is a safe and reliable tool for power calculation of artificial IOL.With high accuracy and non-contact character,it is easy to be manipulated.更多还原