visually challenged vs dim-sighted

visually challenged and dim-sighted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
visually challenged	No	Yes	No	No
dim-sighted	No	Yes	No	No

As adjectives, visually challenged and dim-sighted are synonyms defined as:

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

visually challenged (adjective)	dim-sighted (adjective)
having greatly reduced vision	having greatly reduced vision