Moon Blindness Definition

noun
Night blindness: formerly attributed to the effects of moonlight.
Webster's New World
A disease of horses, of undetermined cause, characterized by recurrent inflammation of the eyes and, eventually, blindness.
Webster's New World

The optic condition night blindess: reduced eyesight in faint light.

The cavalry messenger dismounted after his moon blindness rendered riding on through the wilderness unsafe.
Wiktionary
Synonyms: