DR. SUMIT

DR.JAY KUMAR CHHABLANI

Abstract

We report the distribution pattern of short posterior ciliary arteries (SPCA) in healthy eyes using 12*12 mm swept source OCT. Manual identification was done using en-face scans derived using 3-D volume of cross-sectional OCT. Total analyzed area was divided in 3 areas: nasal, foveal, and temporal including 9 sectors i.e., superior, central and inferior in each area. Mean number of SPCA in 68 eyes (mean ± SD: 58.0±24.1 years) was 2.64±1.17 (range, 1-7) with maximum eyes showing 2 (24, 35.3%) and 3 (23, 33.8%) SPCA. Maximum SPCA was seen in foveal (1.40±1.12, 54.3%) followed by nasal (0.84±0.89, 32.6%) and, temporal (0.34±0.59, 13.2%) areas. Central sector had maximum SPCA in all 3 areas: nasal (0.85±0.60, 17.8%), foveal (0.91±0.83, 24.0%), and temporal (0.50 ± 0.67, 8.5%). Age and SPCA number showed weak, positive correlation (r= 0.46; r2 = 0.21; p=0.01) explaining 21% of the variability. To conclude, SPCA visualization showed foveal central sector had highest concentration of SPCA.