白内障术前测算人工晶状体屈光度不同方法的对比研究  

Comparison of the different intraocular lens power calculation in cataract patients

作　　者：叶向彧[1] 张广斌[1] 王乐[1] 毛益辉[1] 李孟琼[1] 

机构地区：[1]厦门大学附属厦门眼科中心,361001

出　　处：《中华眼外伤职业眼病杂志》2011年第12期905-908,共4页Chinese Journal of Ocular Trauma and Occupational Eye Disease

摘　　要：目的对比研究光学低相干反射生物测量仪（Lenstar LS900）、光学相干生物测量仪（IOL Master）及A型超声扫描3种方法测量眼轴、前房深度及计算所需IOL屈光度，比较3种方法所测数据之间的差异。方法应用LenstarLS900、IOLMaster及A型超声扫描仪分别对50例（80眼）白内障患眼进行眼轴及前房深度测量；利用3种设备分别计算所需IOL屈光度，均选用SRK／T计算公式和SA60AT（Alcon）人工晶状体，在确定同一度数的前提下比较目标屈光度的差异。结果Len-star LS900、IOL Master及A超测量眼轴长度及前房深度，三者所测的数据之间差异无统计学意义，具有良好的相关性。Lenstar LS900和IOL Master所获得的术后目标值差异无统计学意义（P〉0．05），而B超所获得的术后目标值与另二者获得的结果差异有统计学意义（P〈0．05）。Bland—Ahman分析显示，3种设备获得的目标屈光值具有良好的一致性，尤其是Lenstar LS900和IOL Master之间。结论在白内障患眼的生物测量中，Lenstar LS900、IOL Master和A超有良好的一致性。同时，Lenstar LS900还可以快速、准确的为白内障和屈光医生提供更多眼生物信息。Objective To evaluate axial length （AL）, anterior chamber depth （ACD）;and intraocular lens （IOL） power calculation using a new optical low-coherence reflectometry biometer（ Lenstar LS 900） and compare the results with those obtained with a partial coherence interferometry optical biometer （IOL Master） and A-type ultrasound scan. Methods Biometry measurements in 80 eyes of 50 subjects scheduled for cataract surgery were done by the same examiner with Lenstar LS 900, IOL Master and A-scan. After determination of AL and ACD, IOL power calculation for an AcryS of SA60 AT （Alcon） was compared between the 3 devices using SRK/T formula. Results For the AL and ACD, there were significant linear correlation between the Lenstar LS 900, IOL Master and A-scan. The mean differences in IOL power calculations were not statistically significant between Lenstar LS 900 and IOL Master （P 〉 0.05 ）. The Bland-Ahman plots showed comparable degrees of agreement in IOL power measurements as determined by SRK/T formulas by the 3 devices, especially between Lenstar LS 900 and IOL Master. Conclusion Lenstar LS 900 measurements had better agreement with IOL Master and A-scan in cataract eyes. It is an accurate, fast instrument that provides additional information of ocular structure.

关 键 词：白内障 生物测量 眼轴 人工晶状体 

分 类 号：R779.66[医药卫生—眼科]