forty-five patients with a central retinal vein occlusion were divided into three groups : those with venous stasis retinopathy ( vsr , n = 27 ) , those with hemorrhagic retinopathy ( hr , n = 6 ) , and those with undetermined retinopathy ( n = 12 ) .
C0154841
central retinal vein occlusion
C0035309
retinopathy