acuity vs visual modality

acuity and visual modality both are nouns.

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

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

acuity: sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
visual modality: the ability to see; the visual faculty

Other hypernyms of acuity include sight, vision, visual sense.

acuity (noun)	visual modality (noun)
a quick and penetrating intelligence	the ability to see; the visual faculty
sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)