moon blindness
A chronic equine inflammatory eye diseaseA chronic equine inflammatory eye disease.
Meaning
2 senses(uncountable)A chronic equine inflammatory eye disease.
(uncountable)The optical condition of night blindness: reduced eyesight in faint light.
The cavalry messenger dismounted after his moon blindness made it unsafe to ride on through the wilderness.
More definitions
- recurrent eye inflammation in horses; sometimes resulting in blindness
- inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder
Origin
Once believed to be caused by exposure of the eyes to moonlight during sleep.Once believed to be caused by exposure of the eyes to moonlight during sleep.
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Synonyms
3 synonymsClose in meaning
- recurrent eye inflammation in horses; sometimes resulting in blindness:mooneye
- inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder:nyctalopianight blindness
Word family
1 related wordsRelatedmoon-blind
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable