Definitions for visual acuity
vis·ual acu·ity

Princeton's WordNetRate this definition:0.0 / 0 votes

1. acuity, visual acuity, sharp-sightednessnoun

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

FreebaseRate this definition:5.0 / 1 vote

1. Visual acuity

   Visual acuity is acuteness or clearness of vision, which is dependent on the sharpness of the retinal focus within the eye and the sensitivity of the interpretative faculty of the brain. 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 on a chart from a set distance. Chart characters are represented as black symbols against a white background. The distance between the person's eyes and the testing chart is set at a sufficient distance to approximate infinity in the way the lens attempts to focus. Normal visual acuity is commonly referred to as 20/20 vision, the metric equivalent of which is 6/6 vision. At 20 feet or 6 metres, a human eye with nominal performance is able to separate lines that are one arc minute apart. A vision of 20/40 is considered half as good as nominal performance. A vision of 20/10 is considered twice as good as nominal performance. In an eye exam, lenses of varying powers are used to precisely correct for refractive errors. English alphabet letters are typically used as most people will recognise them but other symbols are also used.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

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.

Matched Categories

1. • Vision

How to pronounce visual acuity?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say visual acuity in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of visual acuity in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of visual acuity in Pythagorean Numerology is: 1

Examples of visual acuity in a Sentence

1. Suki John:

   She has a very vivid imagination which allows her to see things in her mind as they would appear on stage, she developed this visual acuity as a young dancer when she had one of her first operations on her eyes.

2. Michael Iuvone:

   The standard of care in most cases is to give injections of drugs that inhibit the growth hormones that is called vascular epithelial growth factor, or VEGF, for most people, it at least slows the progression and in some cases actually improves visual acuity.