sharp-sightedness

Definitions of sharp-sightedness
1

n sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

Synonyms:
acuity, visual acuity
Types:
20/20, twenty-twenty
normal visual acuity, as measured by the ability to read charts at a distance of 20 feet
oxyopia
unusually acute vision
Type of:
sight, vision, visual modality, visual sense
the ability to see; the visual faculty

n lively attentiveness

Synonyms:
alertness, on the qui vive
Type of:
attentiveness
the trait of being observant and paying attention

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