Fig. 4From: Wide-field angiography in retinal vein occlusionsBranch retinal vein occlusion. a Widefield fluorescein angiogram (FA) before treatment, showing a large area of non-perfusion superotemporally (blue). Regions of perfused retina are shaded orange. b Widefield FA performed after treatment. The area of retinal non-perfusion has reducedBack to article page