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Corneal biomechanical properties in normal tension glaucoma and primary open-angle glaucoma

Poster Details

First Author: Y.Razhko BELARUS

Co Author(s):                  

Abstract Details


To determine and compare the corneal biomechanical properties between eyes with normal tension glaucoma (NTG) and eyes with primary open angle glaucoma (POAG).


Ophthalmology Department, Republican Research Center for Radiation Medicine and Human Ecology, Gomel, Belarus


A prospective randomized study of 73 patients with glaucoma was performed between Feb and Sept 2013. POAG and NTG patients had assessment of their corneal biomechanical properties - corneal hysteresis (CH) and corneal resistance factor (CRF). Exclusion criteria: previous intraocular surgery, corneal pathology and inflammatory connective tissue disease. If both eyes were eligible, then the right eye was used for analysis.


52% of patients were female, 48% were male, the average age was 66.9±6.1 years. Thirty three had NTG, whereas 40 had POAG. There was a statistically significant difference in mean CH (NTG: 9.5±0.9 mm Hg; POAG: 8.9±0.4 mm Hg; p=0.04), but not in mean CRF (NTG: 10.0±0.8; POAG: 10.5±1.0; p>0.05). The highest recorded intraocular pressure (IOP) had statistically significant correlations with higher CRF and lower CH.


There was a statistically significant difference in the mean CH between NTG and POAG. The highest recorded IOP was significantly correlated with lower CH and higher CRF. FINANCIAL INTEREST: NONE

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