Abnormal pupillary light reflex

What it means

An abnormality of the reflex that controls the diameter of the pupil, in response to the intensity of light that falls on the retina of the eye.

Rare diseases that can present with this8

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