Central Corneal Thickness Distribution in POAG Compared to Normal Individuals

Abstract

Abstract: : Purpose: To compare the frequency of central corneal thickness (CCT) distribution on pre–determined ranges in normal subjects and high tension primary open angle glaucoma (POAG) patients in order to verify if there is a higher prevalence of thinner CCT among glaucoma patients. Methods: Observational cross section study of 109 consecutive high tension POAG patients and 55 normal subjects. All subjects had CCT measured by ultrasonic pachymetry and were separated in four groups based on their results (CCT < 505 µm; 505µm <CCT< 567µm and CCT > 567µm). Results: There was no significant difference in age, sex or race between patients with glaucoma and normal subjects. Mean CCT in patients with glaucoma and normal subjects was similar( 539.53 ± 37.37 µm and 538.16 ± 30.87µm, p=0.82). No significant difference in the distribution of CCT was observed between patients with glaucoma and normal subjects ((Table). Conclusion: Patients with high–tension POAG and normal subjects have similar distribution of CCT. Table. Central corneal thickness distribution in POAG and normal individuals  

Keywords: comparative anatomy • intraocular pressure • optic disc