Rare diseases · Sign or symptom

Retinal venous occlusion

HP:0012636

What it means

Blockage of a retinal vein or venule, occurring typically at an arteriovenous crossing. Typically presenting with dilated veins, retinal hemorrhages and in some cases non-perfusion.

Retinal vein occlusion is generally associated with systemic cardiovascular diseases.

Rare diseases that can present with this4

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: Retinal vein occlusion

Retinal venous occlusion

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This 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.