visual acuity

noun

Definition of visual acuity 

: 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

Examples of visual acuity in a Sentence

Recent Examples on the Web

Scientists quantify visual acuity in cycles per degree, or the number of black-and-white parallel lines an animal can identify in one degree of their field of vision. Meilan Solly, Smithsonian, "How Does Your Vision Compare to Other Critters in the Animal Kingdom?," 7 June 2018 The accompanying visual acuity guards against attack from the squids’ most infamous predator, the sperm whale, which the squid can spot from almost 400 feet away—a distance long enough to qualify as a par-three golf hole. Katherine J. Wu, Smithsonian, "Operation Calamari: How the Smithsonian Got Its Giant Squids," 21 June 2018 Then again, my senses are heightened, my visual acuity second to none, and my current rate of inflated self-importance frankly unsustainable. Kimberly Harrington, The Cut, "Behold, I Am a New Parent," 1 June 2018 Macular degeneration of the retina results in a loss of visual acuity and field of view. Bruce Henderson, charlotteobserver, "Older drivers are linked to fatal crashes. Is 10 years too long between DMV eye exams? | Charlotte Observer," 16 May 2018 His own experience echoed what had been observed in the clinical trial: The most important result was an improvement in participants’ ability to see in low light, but for some, there was an increase in visual acuity, too. Eric Boodman, STAT, "After nerve-wracking eye surgery, the world comes into focus for early gene therapy recipient," 17 May 2018 State law requires first-time applicants to undergo tests on rules of the road, road signs and visual acuity, plus a road test. Bruce Henderson, charlotteobserver, "Older drivers are linked to fatal crashes. Is 10 years too long between DMV eye exams? | Charlotte Observer," 16 May 2018 After testing it was found that visual acuity was improved after eating the dark chocolate when compared to the milk. Sheah Rarback, miamiherald, "Study shows egg yolks are actually good for you | Miami Herald," 11 May 2018 Humans best pets in the visual acuity arena, however. Dr. Patty Khuly, miamiherald, "Yes, dogs and cats do see color, just not the same way we do | Miami Herald," 12 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'visual acuity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of visual acuity

1889, in the meaning defined above

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Last Updated

3 Oct 2018

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Time Traveler for visual acuity

The first known use of visual acuity was in 1889

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More Definitions for visual acuity

visual acuity

noun

Medical Definition of visual acuity 

: 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 — compare minimum separable, minimum visible

More from Merriam-Webster on visual acuity

Britannica.com: Encyclopedia article about visual acuity

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