Rare diseases · Sign or symptom
Branch retinal vein occlusion
HP:0020165
What it means
Blockage of a branch of the retinal vein. It may present with sudden-onset of painless vision loss or visual field defect correlating to the area of perfusion of the obstructed vessels.
Rare diseases that can present with this1
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Branch retinal vein obstruction
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.