amaurosis fugax

noun

amaurosis fu·​gax -ˈf(y)ü-ˌgaks 

: temporary partial or complete loss of sight in one eye that is typically caused by an abrupt reduction in blood flow (ischemia) to an eye

The occurrence of amaurosis fugax should raise the suspicion of disease in the internal carotid artery, especially when the patient is a man over 40 years old with a bruit below the angle of the jaw.

—Jean-Claude Gautier, The New England Journal of Medicine