visual acuity(n = noun.cognition) acuity, sharp-sightedness - sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart);
is a kind of sight, vision, visual modality, visual sense
has particulars: 20/20, twenty-twenty, oxyopia

acuity, visual, visual agnosia, visual aphasia, visual area, visual aspect, visual cell, visual communication, visual cortex, visual defect, visual disorder, visual display unit, visual field, visual hallucination, visual image, visual impairment, visual joke, visual modality, visual percept, visual perception, visual property, visual purple, visual range, visual sensation, visual sense, visual signal, visual space, visual system