visual acuity
noun Date: 1889 the relative ability of the visual organ to resolve detail that is usually expressed as the reciprocal of the minimum angular separation in minutes of two lines just resolvable as separate and that forms in the average human eye an angle of one minute

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • visual acuity — n. the ability of the eye to discriminate detail, usually tested by comparison with the power of the normal eye to distinguish certain letters on a standard chart at a given distance, generally 20 feet …   English World dictionary

  • Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… …   Wikipedia

  • Visual acuity — The clarity or clearness of the vision, a measure of how well a person sees. The ability to distinguish details and shapes of objects; also called central vision. The word acuity comes from the Latin acuitas = sharpness. * * * visual acuity n the …   Medical dictionary

  • visual acuity — regos aštrumas statusas T sritis fizika atitikmenys: angl. acuity of vision; sharpness of vision; visual acuity vok. Schärfe des Auges, f; Sehempfindlichkeit, f; Sehschärfe, f rus. острота зрения, f; резкость зрения, f pranc. acuité de vision, f; …   Fizikos terminų žodynas

  • visual acuity — noun sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart) • Syn: ↑acuity, ↑sharp sightedness • Derivationally related forms: ↑sharp sighted (for: ↑sharp sightedness) …   Useful english dictionary

  • visual acuity — sharpness of vision: the degree to which a person is able to distinguish and resolve fine detail. The essential requirements are a healthy retina and the ability of the eye to focus incoming light to form a sharp image on the retina. Acuity of… …   The new mediacal dictionary

  • visual acuity — Ophthalm. acuteness of the vision as determined by a comparison with the normal ability to define certain letters at a given distance, usually 20 ft. (6 m). Abbr.: V. [1885 90] * * * …   Universalium

  • visual acuity — vis′ual acu′ity n. oph 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 …   From formal English to slang

  • Visual acuity test — This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself the usual one is called Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the… …   Medical dictionary

  • Test, visual acuity — This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself the usual one is called Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the… …   Medical dictionary

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