Visual acuity — 20/15 and 20/15 vision redirect here. For other uses, see 2020 (disambiguation). Typical Snellen chart used for visual acuity testing. Visual acuity (VA) is acuteness or clearness of vision, which is dependent on the sharpness of the retinal… … Wikipedia
Acuity test, visual — This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself the usual one is called Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the… … Medical dictionary
Visual acuity test — This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself the usual one is called Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the… … Medical dictionary
Visual acuity — The clarity or clearness of the vision, a measure of how well a person sees. The ability to distinguish details and shapes of objects; also called central vision. The word acuity comes from the Latin acuitas = sharpness. * * * visual acuity n the … Medical dictionary
visual acuity — sharpness of vision: the degree to which a person is able to distinguish and resolve fine detail. The essential requirements are a healthy retina and the ability of the eye to focus incoming light to form a sharp image on the retina. Acuity of… … The new mediacal dictionary
test types — Letters of various sizes used to test visual acuity. Jaeger t. type of different sizes used for testing the acuity of near vision. point system t. a near vision test chart … Medical dictionary
test type — (test tīp) printed letters of varying size, used in the testing of visual acuity; see also under chart … Medical dictionary
acuity — 1. Sharpness, clearness, distinctness. 2. Severity. [thr. Fr., fr. L. acuo, pp. acutus, sharpen] absolute intensity threshold a. the minimal light that can be seen. resolution a. detection of a target having two or more parts, often measured by… … Medical dictionary
Visual memory — Close up of the human eye, where vision begins. Visual memory describes the relationship between perceptual processing and the encoding, storage and retrieval of the resulting neural representations. Visual memory occurs over a broad time range… … Wikipedia
Test, eye chart — This test measures how well you see at various distances. The eye chart itself the usual one is called Snellen s chart is imprinted with block letters that line by line decrease in size, corresponding to the distance at which that line of letters … Medical dictionary
