Parent term(s)

peripheral vascular disease +

Term with siblings

retinal vascular occlusion +

diabetic angiopathy
mesenteric vascular occlusion
priapism
Raynaud disease
telangiectasis
thromboangiitis obliterans

Child term(s)

retinal artery occlusion +

retinal vein occlusion +

venous tributary occlusion of retina

denotes an 'is-a' relationship