Lenstar LS900与Tomey EM-3000对角膜中央厚度测量结果的比较  

Comparison of central corneal thickness measurements with Lenstar LS900 and Tomey EM-3000

作　　者：张琼[1] 张士胜 吴彦霖[1] 杜炜[1] 王玲[1] 徐建敏[1] 

机构地区：[1]上海交通大学医学院附属瑞金医院眼科,上海200025 [2]上海瑞视眼科,上海200011

出　　处：《上海交通大学学报（医学版）》2013年第9期1255-1258,共4页Journal of Shanghai Jiao tong University:Medical Science

摘　　要：目的比较Lenstar LS900与Tomey EM-3000测量角膜中央厚度的精确性和一致性。方法白内障术前患者共172例(188眼),将患者按照眼轴长度分为4组:A组(轴长≥28 mm)、B组(26 mm≤轴长<28 mm)、C组(24 mm≤轴长<26 mm)和D组(轴长<24 mm)。分别采用Lenstar LS900和Tomey EM-3000眼前节分析系统测量角膜中央厚度,并对所得数据进行统计学分析。结果 Lenstar LS900测量的角膜中央厚度的平均值为(541.51±36.41)μm,Tomey EM-3000测量的角膜中央厚度的平均值为(536.28±37.64)μm,两者差异有统计学意义(P<0.01);在4组中除D组外,其余三组两者角膜厚度差异都有统计学意义(P<0.01);两方法测量角膜厚度值间存在线性相关(r=0.96,P<0.01);测量差值95%一致性界限范围为(-13.9μm,24.2μm),其中95.7%(180/188)的点在一致性界限内。结论 Lenstar LS900测量角膜厚度值稍大于Tomey EM-3000,但两者存在正相关,具有一致性,均可用于角膜厚度的测量。但在某些特殊的情况下,不能完全互换。Objective To compare the accuracy and consistency between Lenstar LS900 and Tomey EM-3000 in measurement of central corneal thickness. Methods One hundred and seventy-two patients （ 188 eyes） with cataract were divided into four groups based on the axial length： group A （ ≥28 mm）, group B （26 mm to 28 ram）, group C （24 mm to 26 mm） and group D （ 〈 24 mm）. Central corneal thickness was measured by Lenstar LS900 and Tomey EM-3000 analyzer respectively, and the data were statistically analyzed. Results The mean central corneal thickness measured by Lenstar LS900 was （541.51 ± 36.41） μm, that measured by Tomey EM-3000 was （536.28 ±37.64） μm, and there were significant differences between them （P 〈 0.01）. Except for group D, there were significant differences between central corneal thickness measured by two methods in the other three groups （P 〈 0.01）. There was linear correlation between central corneal thickness measured by two methods （ r = 0.96, P 〈 0.01）. The 95% limits of agreement ranged between -13.9 μm and 24.2 μm, and 95.7% （180/188） fell in the limits. Conclusion The central corneal thickness measured by Lenstar LS900 is slightly larger than that measured by Tomey EM-3000, while there exists high correlation and good agreement between them, and both can be used in measurement of central corneal thickness.

关 键 词：角膜中央厚度 LENSTAR LS900 Tomey EM-3000 

分 类 号：R770.4[医药卫生—眼科]