visually impaired vs dim-sighted

visually impaired and dim-sighted both are adjectives.

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

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

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

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