Fahd Daoud Charbel, Cherfan Carole George, Raad Claudia, Asouad Marc, Awwad Shady Tanus
Department of Ophthalmology, American University of Beirut Medical Centre, Beirut, Lebanon.
LaserVision Inc, Beirut, Lebanon.
Arq Bras Oftalmol. 2014 Jan-Feb;77(1):17-20. doi: 10.5935/0004-2749.20140006.
To assess the agreement between the elevation and curvature measurements of the anterior and posterior corneal surfaces obtained using the Galilei Dual Scheimpflug Analyzer and those obtained using the Pentacam single Scheimpflug system.
This prospective, noninterventional, diagnostic study was conducted at the Department of Ophthalmology at the American University of Beirut (Medical Center) and included 60 eyes of 60 consecutive patients. Measurements were obtained using 2 different Scheimpflug analyzers (Galilei and Pentacam). The best-fit sphere was set at 8 mm in both machines. Pachymetry (CCT), anterior elevation (AE) and posterior elevation (PE), and curvature were assessed. Pearson's correlation coefficients, comparison of means, and Bland-Altman plots were used to evaluate agreement between the 2 systems.
The average CCT (at the corneal apex) was 533 ± 35 µm and 532 ± 37 µm (p=0.980), the average central AE was 1.25 ± 3.95 µm and 2.29 ± 5.28 µm (p=0.964), and the average central PE was 4.19 ± 8.18 µm and 5.42 ± 14.05 (p=0.956) µm with the Galilei and Pentacam, respectively.
The Scheimpflug analyzers correlated well in the assessment of pachymetry, elevation, and curvature.
评估使用伽利略双Scheimpflug分析仪获得的角膜前后表面高度和曲率测量值与使用Pentacam单Scheimpflug系统获得的测量值之间的一致性。
这项前瞻性、非干预性诊断研究在美国贝鲁特美国大学（医学中心）眼科进行，纳入了60例连续患者的60只眼。使用2种不同的Scheimpflug分析仪（伽利略和Pentacam）进行测量。两台机器的最佳拟合球均设置为8 mm。评估角膜厚度（CCT）、前表面高度（AE）和后表面高度（PE）以及曲率。使用Pearson相关系数、均值比较和Bland-Altman图来评估两个系统之间的一致性。
伽利略和Pentacam测量的角膜顶点平均CCT分别为533±35 µm和532±37 µm（p = 0.980），平均中央AE分别为1.25±3.95 µm和2.29±5.28 µm（p = 0.964），平均中央PE分别为4.19±8.18 µm和5.42±14.05 µm（p = 0.956）。
Scheimpflug分析仪在角膜厚度、高度和曲率评估方面具有良好的相关性。
