Agreement among 3 methods to measure corneal thickness: Ultrasound pachymetry, Orbscan II, and Visante anterior segment optical coherence tomography
Agreement among 3 methods to measure corneal thickness: Ultrasound pachymetry, Orbscan II, and Visante anterior segment optical coherence tomography
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DOI：
10.1016/j.ophtha.2007.02.017
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发表时间：
2007-10-01
期刊：
影响因子：
13.7
通讯作者：
Lam, Dennis S. C.
中科院分区：
文献类型：
--
作者：
Li, Emmy Y. M.;Mohamed, Shaheeda;Lam, Dennis S. C.
目的：评估超声角膜厚度测量法（LISP）、Orbscan II和Visante眼前段光学相干断层扫描（ASOCT）之间中央和旁中央角膜厚度测量的一致性。设计：观察性横断面研究。参与者：70名受试者的70只眼。每例受试者均接受Orbscan 11（使用声学等效校正因子0.89）、ASOCT和LISP检查。Bland-Altman图用于评估仪器之间的一致性。主要结果测量：通过3种方法测量的中央和中央旁角膜厚度和一致性，通过95%一致性限（LOA）进行评估。通过LISP、Orbscan 11和ASOCT测量的平均中央角膜厚度的平均值分别为553.5 +/- 30.26 μ m、553.22 +/- 25.47 μ m，538.79 ± 26.22 μ m。USP与ASOCT之间有高度相关性（r = 0.936，P
Purpose: To assess the agreement of central and paracentral corneal thickness measurements between ultrasound pachymetry (LISP), Orbscan II, and Visante anterior segment optical coherence tomography (ASOCT).Design: Observational cross-sectional study.Participants: Seventy eyes of 70 subjects.Methods. Each subject underwent Orbscan 11 (using an acoustic equivalent correction factor of 0.89), ASOCT, and LISP examination. Bland-Altman plots were used to evaluate agreement between instruments.Main Outcome Measures: Central and paracentral corneal thickness measurements by the 3 methods and agreement, as evaluated by 95% limits of agreement (LOA).Results: The mean measurements of average central corneal thickness by LISP, Orbscan 11, and ASOCT were 553.5 +/- 30.26 mu m, 553.22 +/- 25.47 mu m, and 538.79 +/- 26.22 mu m, respectively. There was high correlation between instruments: USP with ASOCT (r = 0.936, P