oxyopia vs visual acuity

oxyopia and visual acuity both are nouns.

Word	Noun	Adjective	Verb	Adverb
oxyopia	Yes	No	No	No
visual acuity	Yes	No	No	No

As nouns, visual acuity is a hypernym of oxyopia; that is, visual acuity is a word with a broader meaning than oxyopia:

oxyopia: unusually acute vision
visual acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

Other hypernyms of oxyopia include acuity, sharp-sightedness.

oxyopia (noun)	visual acuity (noun)
unusually acute vision	sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)