高度近视白内障患者眼轴测量方法的探讨

A Study on Axis Length Measurement of High Myopia with Cataract

目的:探讨高度近视白内障患者眼轴测量方法,提高检查的准确性。方法:对103例(168只眼)高度近视合并白内障患者,用A/B超测量仪(法国光太公司生产的A/B超测量仪和加拿大OTI公司生产的A/B超测量仪)和光学相干生物测量仪(德国生产的IOLMASTER)多种仪器对比测量。结合B超了解后巩膜葡萄肿的位置,对后巩膜葡萄肿位于黄斑区者,调整对准葡萄肿位置诱导出现标准波形进行测量。对后巩膜葡萄肿位于黄斑区之外者,避开葡萄肿位置,诱导出现标准波形。用多种仪器对照测量,对照标准波形(图1)取三次标准波形的均值作为眼轴数据计算人工晶状体度数,并对患者手术后屈光度进行分析。结果:本组患者的后巩膜葡萄肿发生率为76.19%。患者术后复查,平均绝对屈光误差≤±1D为100%。结论:对高度近视白内障患者,特别有后巩膜葡萄肿患者,采取A、B超结合测量,多种仪器对照测量,观察获取标准波形的均值等综合方法获取准确的眼轴数据。

Purpose ：To study the accuracy of axis length measurement on high myopia with cataract.Methods：A/B scan ultrasonography and IOL-master were used to measure the ocular axial length in 168 high myopic eyes with cataract of 103 eases. B-scan uhrasonography was used to examine posterior scleral staphyloma. Refractive results were recorded during the follow-up after operation to evaluate the accuracy of measurement.Results ：The rate of posterior scleral staphyloma was 76.19%. The average postoperative error of refractive of all eyes was between -1.0 D and ＋1.0 D.Conclusion：Accurate data of axis length can be obtained by combining results of A- scan, B-scan uhrasonography and IOL-master for high myopia with cataract, especially for patients with posterior scleral staphyloma. Eye Science 2005;21：124-126.