visual acuity

noun

: 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

Example Sentences

Recent Examples on the Web Accomplishing such a task requires a high degree of visual acuity, making archerfish a good candidate to test facial recognition in species lacking a neocortex. Nathaniel Scharping, Discover Magazine, 7 June 2016 While no one in the study has fully regained sight, quite a few of them, like Macdonald, have experienced improvements in their visual acuity. Linda Marsa, Discover Magazine, 2 Jan. 2019 The disease damages the central vision first before impacting overall visual acuity and field of vision. Cam Kerry, BostonGlobe.com, 26 Feb. 2023 But our abilities are respectable in one category: visual acuity. Cody Cottier, Discover Magazine, 6 June 2018 The visual acuity of the astronauts flying such a mission would be critical at many key phases of the flight — including rendezvous, docking, landing, and launch. Doug Adler, Discover Magazine, 14 Apr. 2020 On examination, his visual acuity was 6/18, right eye and 6/6, left eye.... ... Ncbi Rofl, Discover Magazine, 3 Apr. 2012 The visual acuity that urchins showed in the tank experiments was within the range that scientists estimated from the tube-foot model. Elizabeth Preston, Discover Magazine, 29 May 2018 Ski mountaineers need visual acuity on dangerous descents, and ski racers hitting over 90 mph must be able to react to course variations in milliseconds. Brigid Mander, WSJ, 22 Nov. 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'visual acuity.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1889, in the meaning defined above

Time Traveler
The first known use of visual acuity was in 1889

Dictionary Entries Near visual acuity

Cite this Entry

“Visual acuity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/visual%20acuity. Accessed 5 Jun. 2023.

Medical Definition

visual acuity

noun
: 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

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