LenstarLS900与A超测算白内障患者人工晶状体度数对比研究  

Comparison of the Lenstar LS 900 with A-scan for intraocular lens power calculation in cataract patients

作　　者：王乐[1] 张广斌[1] 叶向彧[1] 毛益辉[1] 何雪洪[1] 

机构地区：[1]厦门大学附属厦门眼科中心,厦门361001

出　　处：《中国实用眼科杂志》2012年第3期263-265,共3页Chinese Journal of Practical Ophthalmology

摘　　要：目的评估及比较A超、Lenstar LS900光学生物测量白内障患者眼轴长度、前房深度、人工晶状体度数的差异。方法分析2011年3月行白内障超声乳化摘除及人工晶状体植入术的白内障患者50例（80只眼），分别用接触式A超和LenstarLS900光学生物测量两种方法测量眼轴长度及前房深度差异。选用SRK／T公式及SA60AT（Alcon）人工晶状体常数计算人工晶状体度数，在确定同一度数的前提下比较目标屈光度的差异。结果Lenstar LS900及A超测量眼轴长度及前房深度之间差异无统计学意义，具有良好的相关性。Bland—Ahman分析显示，两种设备获得的人工晶状体目标屈光值具有良好的一致性。结论LenstarLS900及A超对白内障术前生物测量结果准确，可靠，可用于白内障术前检查。同时，LenstarLS900能测量角膜厚度，前房深度、晶状体厚度，视网膜厚度和瞳孔大小等参数，对白内障及屈光性手术的能提供更多生物信息。Objective To evaluate axial length （AL）, anterior chamber depth （ACD） and intraocu- lar lens （IOL） power calculation using a new optical low-coherence reflectometry biometer （Lenstar LS 900） and compare the results with those obtained with A-scan applanation ultrasound scan. Methods Biometry measurements in 80 eyes of 50 subjects scheduled for cataract surgery by the same examiner with Lenstar LS 900 and A-scan. After determination of axial length （AL）, and anteri- or chamber depth （ACD）, IOL power calculation for an AcrySof SA60AT （Alcon） was compared be- tween the 2 devices using SRK/T formulas. Results For the AL and ACD, there were significant lin- ear correlation between the Lenstar LS 900 and A-scan. Bland-Altman plots showed comparable degrees of agreement in IOL power measurements as determined by SRK/T formulas by the 2 devices. Conclusions Lenstar LS 900 measurements has better agreement with A-scan in cataractous eyes. It can provide additional information of interest to any cataract or refractive surgeon, such as corneal thickness, lensthickness and so on.

关 键 词：白内障 生物测量 人工晶状体 

分 类 号：R779.63[医药卫生—眼科]