Retinal Vessel Density in Optical Coherence Tomography Angiography in Optic Atrophy after Nonarteritic Anterior Ischemic Optic Neuropathy

Figure 1

Comparison of the peripapillary and parafoveal retinal angiograms: (a), (f) en face optical coherence tomography angiograms (OCT-A) in the radial peripapillary capillary (RPC) layer, (b), (g) vessel density (%) of PRCs with a color-coded map, (c), (h) OCT-A in the parafoveal area, (d), (i) vessel density (%) in the parafoveal area with a color-coded map, and (e), (j) total deviation of the visual field in a representative nonarteritic ischemic optic neuropathy (NAION) eye and the normal fellow eye. In the NAION eye (a)–(e), the microvascular network of the RPC layer was attenuated (arrow) compared with that of the normal fellow eye (f)–(j). The parafoveal microvascular networks in these examples showed no clear differences. The circles indicate the measured area for circumpapillary and parafoveal vessel density.

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