Marcelo Ayala1. 1. Glaucoma Department, St. Eriks Eye Hospital, Karolinska Institutet, Stockholm, Sweden.
Abstract
PURPOSE: To identify differences in corneal hysteresis (CH) between primary open-angle glaucoma (POAG), pseudoexfoliative glaucoma patients (PXSG) and a healthy control group. METHODS: In this retrospective study, CH was measured with the Ocular Response Analyzer. 90 subjects were evaluated, 30 subjects in each group. One eye per subject was analyzed. RESULTS: In normal eyes, POAG and PXSG, CH was 9.8±1.6, 9.0±1.9 and 8.0±1.5 mm Hg, respectively. CH was significantly lower in PXSG patients than in POAG (p=0.042) and normal patients (p=0.0001), but no significance was found between the POAG and the normal group (p=0.23). CONCLUSION: CH differs in the different groups and might be considered in glaucoma evaluation. Further studies with larger sample sizes are needed.
PURPOSE: To identify differences in corneal hysteresis (CH) between primary open-angle glaucoma (POAG), pseudoexfoliative glaucomapatients (PXSG) and a healthy control group. METHODS: In this retrospective study, CH was measured with the Ocular Response Analyzer. 90 subjects were evaluated, 30 subjects in each group. One eye per subject was analyzed. RESULTS: In normal eyes, POAG and PXSG, CH was 9.8±1.6, 9.0±1.9 and 8.0±1.5 mm Hg, respectively. CH was significantly lower in PXSG patients than in POAG (p=0.042) and normal patients (p=0.0001), but no significance was found between the POAG and the normal group (p=0.23). CONCLUSION: CH differs in the different groups and might be considered in glaucoma evaluation. Further studies with larger sample sizes are needed.
Authors: Thao N Yeh; Harry M Green; Yixiu Zhou; Julie Pitts; Britney Kitamata-Wong; Sophia Lee; Shiyin L Wang; Meng C Lin Journal: Invest Ophthalmol Vis Sci Date: 2013-06-06 Impact factor: 4.799