Focal retinal arteriolar constriction

What it means

Focal decreased retinal arteriolar diameters, which may decrease blood flow and slow oxygen delivery to regions of the retina.

Usually after the first branch, the retinal arteries contain no elastic fibers and the term retinal arteriole is more appropriate. The main changes seen in diseases such as hypertension affect mainly the retinal arterioles rather than the retinal artery.

Rare diseases that can present with this3

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: Constricted retinal arterioles · Narrow retinal arterioles · Retinal arteriolar constriction · Retinal arteriolar narrowing