visually challenged vs visually impaired

visually challenged and visually impaired both are adjectives.

Word	Noun	Adjective	Verb	Adverb
visually challenged	No	Yes	No	No
visually impaired	No	Yes	No	No

As adjectives, visually challenged and visually impaired are synonyms defined as:

visually challenged and visually impaired: having greatly reduced vision

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

visually challenged (adjective)	visually impaired (adjective)
having greatly reduced vision	having greatly reduced vision