Abstract
To evaluate changes in macular thickness, ganglion cell layer/inner plexiform layer (GCL/IPL) thickness, and retinal nerve fiber layer (RNFL) thickness in normal eyes and glaucomatous eyes using spectral domain optical coherence tomography (SD-OCT). We enrolled 89 eyes (all left eyes), including 45 (of 45 patients) eyes with glaucoma and 44 (of 44 patients) normal eyes. The data from macular measurements using spectral domain optical coherence tomography were analyzed according to groups divided by age and glaucoma status. The macular thickness analysis, GCL/IPL thickness, and RNFL thickness values determined by SD-OCT scans were compared among the groups. Mean macular thickness decreased significantly with age or glaucoma. Mean GCL/IPL thickness decreased significantly in glaucomatous eyes in all sectors but did not decrease with age. Mean RNFL thickness, which was divided into four quadrants (superior, nasal, inferior, and temporal), decreased significantly in glaucomatous eyes at all quadrants and decreased in the temporal quadrant with age in non-glaucomatous eyes. No significant differences were detected between eyes with normal tension glaucoma (NTG) and primary open angle glaucoma (POAG) in all sectors of mean GCL/IPL thickness, RNFL thickness, and macular thickness. No significant difference in mean thickness was detected between eyes with NTG and POAG. Some of the sectors of RNFL thickness decreased with age or glaucoma. GCL/IPL thickness, however, decreased in glaucomatous eyes but not with age. Therefore, GCL/IPL thickness is less influenced by age when monitoring patients with glaucoma or suspect glaucoma.
Published Version
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