Measurements of anterior segment parameters using three different non-contact optical devices in keratoconus patients

作     者：Ahmet Taylan Yazici Gkhan Pekel Ercüment Bozkurt Yusuf Yildirim Evre Pekel Ahmet Demirok mer Faruk Yilmaz 

作者机构：Beyoglu Eye Training and Research Hospital Department of OphthalmologyPamukkale University 

出 版 物：《International Journal of Ophthalmology(English edition)》 (国际眼科杂志（英文版）)

年 卷 期：2013年第6卷第4期

页      面：521-525页

核心收录：

学科分类：1002[医学-临床医学] 100212[医学-眼科学] 10[医学] 

主　　题：Visante Orbscan Pentacam corneal pachymetry anterior chamber depth pupil diameter 

摘      要：AIM:To evaluate the measurements of anterior segment parameters using three different non-contact optical devices in keratoconus patients.·METHODS:A hundred and one eyes of 55 keratoconus patients were enrolled in this *** mean age was26.2 ±8.9 *** inclusion criteria were keratoconus stage I to III according to the Amsler-Krumeich keratoconus *** the measurements were done by the same operator,under the mesopic light condition and repeated with three different optical methods;Visante,Orbscan and *** evaluated anterior segment parameters were anterior chamber depth(ACD),central and thinnest corneal thickness(CCT and TCT) and pupil diameter(PD).·RESULTS:The mean CCT measured by Visante,Orbscan and Pentacam were as follows:462.0 ±48.1μm,463.9±60.9μm,476.5±45.3μm,respectively(P =0.873).The mean ACD values were 3.34±0.33mm,3.26±0.33mm,3.49±0.40mm,respectively(P=0.118).The mean PD measurements were 5.11 ±1.14mm,4.80 ±0.85mm,3.80 ±1.38mm,respectively(P 0.001).The mean TCT measurements of Visante,Orbscan and Pentacam were 437.9 ±48.2μm,447.6±60.6μm and 459.9±44.0μm,respectively(P =0.214).The Visante and Orbscan measured CCT similarly,while Pentacam measured CCT thicker than the other *** Visante measured TCT thinner than the other two *** ACD measurements,Orbscan was the one giving the lowest *** was measured differently by the devices.·CONCLUSION:Although TCT,CCT and ACD measurements acquired by Visante,Orbscan and Pentacam in keratoconus patients are similar,PDmeasurements show large differences among the devices.