Definitions of visual acuity [ˈvɪʒ u əl]

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Definition of 'visual acuity'

Random House Webster's College Dictionary

1. (n. .) visual acuity
acuteness of the vision as determined by a comparison with the normal ability to identify certain letters at a given distance, usu. 20 ft. (6 m).

Etymology: (1885–90)

Definition of 'visual acuity'

Princeton's WordNet

1. (noun) acuity, visual acuity, sharp-sightedness
sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)

Definition of 'visual acuity'

U.S. National Library of Medicine

1. visual acuity
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.

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