advertisement
Abstract #126463 Published in IGR 25-2
Assessment of glaucoma with retinal nerve fiber layer optical density ratios from volumetric optical coherence tomography across various analytical radii
Chen B; Chen S; Yang J; Zhang MExpert Review of Medical Devices 2025; 22: 89-98
OBJECTIVE: To explore the impact of glaucoma on the retinal nerve fiber layer (RNFL) optical density ratio (ODR) by volumetric optical coherence tomography (OCT) under different analytical radii. METHODS: Twenty-five eyes identified as healthy and 57 eyes with a glaucoma diagnosis (23 mild and 34 moderate-advanced cases) underwent volumetric OCT scans centered at the optic nerve head. Cross-sectional images were obtained through 5 distinct analytical circles with varying radii. The distribution of RNFL ODRs was analysis and compared between normal eyes and glaucomatous eyes. RESULTS: RNFL ODRs displayed significant variation in relation to their location across all examined eyes and respected the ISTN rule (inferior > superior > nasal > temporal, all < 0.05). The ODRs differed significantly between normal and glaucomatous groups (all < 0.001), decreasing as glaucoma progresses, both on average and in each quadrant of all analytical circles (all < 0.001). The RNFL ODRs correlated significantly with the MD (R ranging from 0.553 to 0.585, all < 0.001), with the most pronounced difference noted in the inferior-temporal sector between groups. CONCLUSIONS: RNFL ODRs by OCT imaging could serve as a valuable tool for detecting retinal nerve fiber defects in glaucomatous eyes.
Joint Shantou International Eye Center, Shantou University and the Chinese University of Hong Kong, Shantou, Guangdong, China.
Full article