keen-sighted vs sharp-sighted

keen-sighted and sharp-sighted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
keen-sighted	No	Yes	No	No
sharp-sighted	No	Yes	No	No

As adjectives, keen-sighted and sharp-sighted are synonyms defined as:

Other synonyms of keen-sighted include argus-eyed, hawk-eyed, lynx-eyed, quick-sighted, sharp-eyed.

keen-sighted (adjective)	sharp-sighted (adjective)
capable of seeing to a great distance	keenly perceptive or alert
having very keen vision	having very keen vision