Retinal ischaemia and relative afferent pupil defects in central retinal vein occlusion.

A consecutive series of 40 patients were assessed for relative afferent pupil defects and retinal ischaemia by fluorescein angiography. A strong correlation was found between density of afferent defect and area of retinal non-perfusion. There was an increasing incidence of rubeosis iridis with more severe grades of afferent defects or ischaemia.