Material and Methods: Retinal nerve fiber layer thickness at superior, nasal, inferior and temporal quadrants of optic disc were taken with spectral-domain optical coherence tomography (SD-OCT). Only the measurements of right eyes were elucidated in the study. Choroidal thickness at 500 μm, 1000 μm and 1500 μm distance to the optic disc margin were measured in 4 quadrants. The difference betweens 4 quadrants in regard to RNFL thickness and peripapillary choroidal thickness were analyzed with one-way ANOVA anlaysis.

Results: Sixty eight eyes of 68 cases were included to the study. Mean age was 56.89±8.45 years (42-77 years). Twenty-eight cases (41.2%) were women, 40 (58.8%) were men. Mean RNFL thickness at superior quadrant was 117.35±17.65 μm (69-160 μm), 125.11±21.7 μm (67-172 μm) at inferior quadrant, 82.26±12.16 μm (58-107 μm) at nasal quadrant and it was 74.72±10.8 μm (50- 93 μm) at temporal quadrant. Mean RNFL was significantly thicker at inferior and superior quadrants compared with nasal and temporal quadrants. Mean choroidal thicknesses were found to be increasing towards peripherally in all quadrants. Mean choroidal thickess was significantly thinner at inferior quadrant when compared with other 3 quadrants.

Conclusion: In this study, topographical analysis of peripapillary RNFL thickness and choroidal thickness were consistent with previous studies. Keywords : Optical coherence tomography, peripapillary choroidal thickness, retinal nerve fiber layer thickness