near-blind vs visually challenged

near-blind and visually challenged both are adjectives.

Word	Noun	Adjective	Verb	Adverb
near-blind	No	Yes	No	No
visually challenged	No	Yes	No	No

As adjectives, near-blind and visually challenged are synonyms defined as:

Other synonyms of near-blind include dim-sighted, purblind, sand-blind, visually impaired.

near-blind (adjective)	visually challenged (adjective)
having greatly reduced vision	having greatly reduced vision