nyctalopia vs moon blindness

nyctalopia and moon blindness both are nouns.

Word	Noun	Adjective	Verb	Adverb
nyctalopia	Yes	No	No	No
moon blindness	Yes	No	No	No

As nouns, nyctalopia and moon blindness are synonyms defined as:

nyctalopia and moon blindness: inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder

Other synonyms of nyctalopia include night blindness.

nyctalopia (noun)	moon blindness (noun)
inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder	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