The influence of cornea properties on rebound tonometry
The influence of cornea properties on rebound tonometry
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DOI：
10.1016/j.ophtha.2007.03.061
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发表时间：
2008-01-01
期刊：
影响因子：
13.7
通讯作者：
Chiu, Roger
中科院分区：
文献类型：
--
作者：
Chui, Wan-sang;Lam, Andrew;Chiu, Roger
目的：为了确定角膜厚度，角膜滞后（CH），角膜阻力因子（CRF）对眼内压（IOP）测量使用iCARE反弹tonometer.Design：横断面研究。参与者：125眼125正常healthy subjects.Methods：眼内压测定在所有科目使用iCARE在中央和颞部角膜区域。用超声角膜厚度测量仪测量这两个区域的角膜厚度。使用眼反应分析仪测量角膜滞后和角膜阻力因子。Goldmann压平眼压计（GAT）也进行了所有eyes.Main结果Measures：眼压，角膜厚度，角膜滞后，和角膜阻力factor.Results：虽然周边角膜是显着厚于中央角膜，iCARE获得的IOP在2个区域是相似的，并显着高于GAT测量。与GAT测量值相比，IOP较高时存在高估，IOP较低时存在低估。多元回归分析显示iCARE与CH之间存在显著相关性（偏相关r =-0.67，P
Purpose: To determine the influence of corneal thickness, corneal hysteresis (CH), and corneal resistance factor (CRF) on intraocular pressure (IOP) measurements obtained using the iCARE rebound tonometer.Design: Cross-sectional study.Participants: One hundred twenty-five eyes of 125 normal healthy subjects.Methods: Intraocular pressure was determined in all subjects using the iCARE at both central and temporal corneal regions. Corneal thickness at these 2 regions was determined by ultrasonic pachymetry. Corneal hysteresis and corneal resistance factor were measured using an ocular response analyzer. Goldmann applanation tonometry (GAT) was also performed on all eyes.Main Outcome Measures: Intraocular pressure, corneal thickness, corneal hysteresis, and corneal resistance factor.Results: Although the peripheral cornea was significantly thicker than the central cornea, IOPs obtained by the iCARE at the 2 regions were similar and significantly higher than GAT measurements. There were an overestimation at higher IOPs and an underestimation at lower IOPs relative to GAT measurements. Multiple regression analysis showed a significant correlation between the iCARE and CH (partial correlation r = -0.67, P