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The following statistics are based on the British National Corpus, so they are representative for the British English.

Distribution of usage frequency for the most common synonyms of the noun acuity:


Definition of the noun Acuity

What does Acuity mean as a name of something?

noun - plural: acuities

  1. sharpness of vision; the visual ability to resolve fine detail (usually measured by a Snellen chart)
  2. a quick and penetrating intelligence

Alternative definition of the noun Acuity


  1. Sharpness or acuteness, as of a needle, wit, etc.

Specialised definition of the noun Acuity

Glossary of healthcare / ophthalmology

clear, sharp vision

Printed dictionaries and other books with definitions for acuity

Click on a title to look inside that book (if available):

Google previewTHE EYE AND VISUAL OPTICAL INSTRUMENTS. Edition en anglais (1997)

by George Smith, David A. Atchison

Vernier acuity Letter acuity is a good guide to reading performance but should not be used to predict visual performance for all other tasks, for example when reading scales or verniers. In these cases, a good judgement of the alignment ...

Google previewHutchison's Atlas of Pediatric Physical Diagnosis (2014)

by Krishna M Goel, Robert Carachi

Visual acuity is a measure of the clarity of central vision. It is defined as the measurement of the...

Google previewGeriatric Rehabilitation Manual (2007)

by Timothy L. Kauffman

acuity. Visual acuity is a single aspect of...

Google previewDeJong's the Neurologic Examination (2005)

by William Wesley Campbell, Russell N. DeJong

Visual Acuity Visual acuity is a measure of the eye's ability to resolve details; it depends on several functions. The intensity threshold...

The acuity is the line where more than half of the characters are accurately read. If the patient can read the ...

Google previewThe Behavior of Fish and Other Aquatic Animals (2012)

by David Mostofsky

Acuity A measurement of a subject's acuity is a measurement of the finest detail of a test pattern that the subject can ...

Google previewHuman Factors in Simple and Complex Systems, Second Edition (2008)

by Robert W. Proctor, Trisha Van Zandt

Resolution acuity is a measure of the person's ability to distinguish multiple bars ( or gratings) from a single area of the same average intensity (Chui et al., 2005). Acuity varies as a function of many of the factors that influence brightness.

Google previewThe Optical Journal and Review of Optometry. ... (1922)

Visual acuity is a faculty that depends upon the receiving, transmitting and interpreting powers that the ocular mechanism and visual centers of the brain possess. It is evident, from the definition, that it is a faculty, dependent upon the perfect ...

Google previewThe NLP Practitioner: A Practitioners Toolkit (2014)

by Toby and Kate McCartney

Sensory acuity is the ability to utilise your senses to gain awareness of another person's unconscious responses. When we pay particular attention to what we see (visual), hear (auditory) and feel (kinaesthetic) from another person, as well as ...

Google previewHuman Physiology (2013)

by R.F. Schmidt, G. Thews

Point visual acuity is the reciprocal of the distance (in minutes of arc) by which two small points of light must be separated in order to be just detected as separate. Contour visual acuity is the reciprocal of the smallest interruption in a contour (in ...

Google previewPediatric Cataract Surgery (2005)

Techniques, Complications, and Management by M. Edward Wilson, Rupal H. Trivedi, Suresh K. Pandey

Visual acuity is the aspect of visual function most commonly assessed clinically and can be measured in infants and children using appropriate techniques. Acuity measurements obtained using different techniques may show considerable ...

Google previewTransportation in an Aging Society (2004)

A Decade of Experience, Technical Papers and Reports from a Conference, November 7-9, 1999, Bethesda, Maryland

The most common study involves an examination of the associations between visual acuity and driving performance: acuity is the most ubiquitous visual- screening test used by licensing agencies to determine driving fitness. Some of the most- ...

Google previewDo Dogs Dream?: Nearly Everything Your Dog Wants You to Know (2013)

by Stanley Coren

ISUAL ACUITY IS a measure of how small a visible detail can be and still be identified by a person. The most common way of testing vision is to use an eye chart (the kind you see in an optometrist's office that has the big ā€œEā€ in the top row ).

Google previewAssessment and Investigative Techniques (2005)

by Sandip Doshi, William Harvey (MCOptom.)

Visual acuity is a measurement of a patient's ability to resolve detail and usually involves directing a patient to identify targets at a set distance which are of ever- decreasing size and typically of high-contrast until they can no longer be identified ...

Google previewFunctional Ophthalmic Disorders (2014)

Ocular Malingering and Visual Hysteria by Robert Enzenauer, William Morris, Thomas O'Donnell, Jill Montrey

Abstract Decreased visual acuity is the most common complaint in functional ophthalmic problems. Although some tests for physiologic reflexes such as optokinetic nystagmus or preferential looking can be helpful, most tests depend upon the ...

Google previewCrucial Elements of Police Firearms Training (2007)

by Brian R. Johnson

Vision can be divided into static and dynamic visual acuity. Static visual acuity is the ability to see a non-moving fixed ...

Google previewHealthy Ageing (2013)

The Role of Nutrition and Lifestyle by BNF (British Nutrition Foundation)

Distance visual acuity is the basis for categorising vision impairment in the World Health Organization's International Classification of Diseases (ICD) and is usually measured using an illuminated Snellen chart. In the UK a large study of health ...

Google previewe-Study Guide for Maternal Child Nursing Care, textbook by Shannon E. Perry (2012)

Nursing, Nursing by Cram101 Textbook Reviews

Visual acuity is a measure of the spatial resolution of the visual processing system. VA is tested by requiring the person whose vision is being tested to identify characters (like letters and numbers) on a chart from a set distance. Color vision: ...

Google previewA Comprehensive Guide to Geriatric Rehabilitation (2014)

[previously entitled Geriatric Rehabilitation Manual] by Timothy L. Kauffman, Ronald W. Scott, John O. Barr, Michael L. Moran

Visual acuity is a single aspect of vision but perhaps the most synonymous with visual health, since it is the standard measurement for vision testing in the US. Dr Herman Snellen is credited with introducing the modern 'eye testing' system in ...

Google previewLow Vision Rehabilitation (2007)

A Practical Guide for Occupational Therapists by Mitchell Scheiman, Maxine Scheiman, Steven Whittaker

Visual acuity is a measure of the smallest high-contrast detail that one can resolve. Visual acuity usually is measured with letters or words: the detail is l/5th the size of the letter or about the stroke width or the gap in a C. Most people are ...

Google previewDictionary of Optometry and Visual Science (2014)

by Michel Millodot

acuity Term derived from the Latin (acutus) meaning acute or sharp: sharpness ...

Google previewEncyclopedia of Entomology (2008)

by John L. Capinera

Visual acuity is a measure of how well objects can be resolved. Put simply, higher visual acuity means better ability to see objects in the environment and to navigate, capture prey, and chase a potential mate in flight. Insect eyes, however, do ...

Google previewPhysiological Optics, Being an Essay Contributed to the American Encyclopedia of Ophthalmology (1918)

by Charles Sheard

Since the visual acuity is proportional to the size of the retinal image it follows that it will be increased by a lens correcting the hyperopia due to curvature placed at the anterior focus of the eye and diminished by a lens correcting the myopia ...

Google previewEncyclopedia of Health (2010)

A person with normal visual acuity would be able to read the single large top letter at a distance of 200 feet (61 m). The letters on the chart become smaller with each successive line toward the bottom. Anyone who cannot read any farther ...

Google previewDictionary of Biological Psychology (2001)

by Philip Winn

As a sensitivity measure, VISUAL ACUITY is defined as the reciprocal of the minimum resolvable angle. In general, three factors are considered to dictate the resolving power of the eye at a given retinal eccentricity. (1) Even for point-like ...

Google previewThe SAGE Encyclopedia of Theory in Psychology (2016)

by Harold L. Miller, Jr.

Disorders This category of disorders reflects the dysfunction of the eyes or the optic nerves or both and can affect visual field, visual acuity, contrast sensitivity, and color vision. Squint, retinitis pigmentosa, and ...

Google previewThe Dictionary for Human Factors/Ergonomics (1992)

by James H. Stramler, Jr.

sight vision test any eye test for measuring visual acuity or color sensitivity; see Snellen test, Ishihara test, Stilling test visor any device which may be placed over or in front of the eyes to shield or protect them from intense light ...

Google previewEncyclopedia of Special Education (2007)

A Reference for the Education of Children, Adolescents, and Adults with Disabilities and Other Exceptional Individuals by Cecil R. Reynolds, Elaine Fletcher-Janzen

subjective refraction, distance and near acuity, horizontal and vertical ductions, fusional amplitudes, and accommodative tests precede any visual training therapy. Additional testing procedures evaluate suppressions, stereopsis , eye ...

Google previewEncyclopaedia of Occupational Health and Safety: Guides, indexes, directory (1998)

by Jeanne Mager Stellman

Example of a Snellen chart: Landolt rings (acuity in decimal values (reading distance not specified)) 11.12 Figure 11.10 Example of a Snellen chart: Sloan letters for measuring near ...

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Small photo of Side profile portrait beautiful young business woman texting on her smart phone isolated on acuity urban backgroundSmall photo of Close up food. Homemade pasta with tomatoes and spices. Acuity will add the garlic.Small photo of Concept of vision and eyesight with an old vintage pair of spectacles or glasses on an optometrists chart with alphabet letters for testing acuitySmall photo of Acuity colorful word with Stethoscope on wooden backgroundSmall photo of Side profile portrait beautiful young business woman texting on her smart phone isolated on acuity urban background More...

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Scrabble value of A1C3U1I1T1Y4

The value of this 6-letter word is 11 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

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