Anisocoria

Anisocoria is a condition that causes one’s eye pupils to be differently sized. Anisocoria is sometimes a normal variation that occurs in people’s eyes, but it can also represent an underlying issue. It can be associated with glaucoma (damages in the optic nerve) or uveitis (a form of eye inflammation).

In some cases, anisocoria can also be caused by injury or trauma. That’s what happened to the late singer-songwriter David Bowie. The “Space Oddity” singer exhibited anisocoria as a result of an injury he suffered when he was a teenager.