Branch retinal artery occlusion associated with IRVAN syndrome. (a) Color fundus photograph of the left eye of a patient with IRVAN syndrome shows an area of retinal whitening along upper temporal vessel. Early phase (b) and mid-phase (c) fluorescein angiograms show branch retinal artery occlusion. Note the presence of multiple macroaneurysms on the course of this artery. (d) Visual field testing shows multiple central scotomas in the area corresponding to the occluded artery.