visual acuity

American  

noun

Ophthalmology.

1. acuteness of the vision as determined by a comparison with the normal ability to define certain letters at a given distance, usually 20 feet (6 meters). V.

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Etymology

Origin of visual acuity

First recorded in 1885–90

Example Sentences

Though some patients could make out patterns immediately, all patients' visual acuity improved over months of training.

From Science Daily • Oct. 22, 2025

Sighted participants recruited for the study were asked to test and verify the phosphene maps based on visual acuity and object recognition.

From Science Daily • Oct. 12, 2023

Each team’s four field players must be visually impaired, meaning they are completely blind or have very low visual acuity or no light perception.

From Los Angeles Times • Jul. 9, 2023

His left eye had post-traumatic cataract complications and has 60% visual acuity.

From BBC • Jul. 21, 2022

Even if they’re looking at the road, he’d found, their visual acuity was impaired by the cognitive demand of the phone.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel