Posterior corneal elevation and back difference corneal elevation in diagnosing forme fruste keratoconus in the fellow eyes of unilateral keratoconus patients
Posterior corneal elevation and back difference corneal elevation in diagnosing forme fruste keratoconus in the fellow eyes of unilateral keratoconus patients
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DOI：
10.1016/j.jcrs.2013.03.023
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发表时间：
2013-09-01
影响因子：
2.8
通讯作者：
Akinci, Arsen
中科院分区：
文献类型：
--
作者：
Muftuoglu, Orkun;Ayar, Orhan;Akinci, Arsen
目的：评价1只眼圆锥角膜患者和1只眼圆锥角膜形成患者的后角膜高度和后差角膜高度。设计：病例对照研究。方法：回顾分析1只眼圆锥角膜患者，对侧眼和正常人眼进行圆锥角膜形成。所有受试者均使用旋转Scheimpflug成像系统(Pentacam)进行评估，包括矢状面和切面前弯分析、角膜曲率测量和后仰角测量。从Scheimpflg系统的Belin-Ambrosio增强扩张图的差异地图推断出背部差异高程值。结果：圆锥角膜和圆锥角膜患者的角膜屈光度、角膜厚度进展指数和角膜后高度(后高度和后差异高度)的测量值均显著高于正常对照组(P
PURPOSE: To evaluate posterior corneal elevation and back difference corneal elevation in patients with keratoconus in 1 eye and forme fruste keratoconus in the fellow eye.SETTING: Kudret Eye Hospital, Ankara, Turkey.DESIGN: Case-control study.METHODS: This study retrospectively reviewed patients with keratoconus in 1 eye and forme fruste keratoconus in the fellow eye and eyes of normal subjects. All subjects were evaluated with a rotating Scheimpflug imaging system (Pentacam), including sagittal and tangential anterior curve analysis, keratometry, and posterior elevation. The back difference elevation values were extrapolated from the difference maps of the Belin-Ambrosio enhanced ectasia display of the Scheimpflug system. The receiver operating characteristic (ROC) curves were analyzed to evaluate the sensitivity and specificity of the parameters.RESULTS: The corneal power, pachymetric progression index, and posterior corneal elevation (posterior elevation and back difference elevation) measurements were statistically significantly higher in eyes with keratoconus or forme fruste keratoconus than in eyes of normal control subjects (P