Fig. 4From: Correlation between optic nerve head circulation and visual function before and after anti-VEGF therapy for central retinal vein occlusion: prospective, interventional case seriesFluorescein angiography before anti-VEGF therapy for central retinal vein occlusion (CRVO). The same case presented in Fig. 1. Because there are not more than 10 disc areas of the nonperfusion areas, this case was diagnosed with nonischemic CRVOBack to article page