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
First Known Use of visual acuity
Medical Definition of visual acuity
Learn More about visual acuity
Britannica.com: Encyclopedia article about visual acuity
Seen and Heard
What made you want to look up visual acuity? Please tell us where you read or heard it (including the quote, if possible).