| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,760,662,796 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
contrast sensitivity |
Also found in: Encyclopedia, Wikipedia | 0.01 sec. |
|
sensitivity, contrast The ability to detect luminance contrast. In psychophysical terms it is the reciprocal of the minimum perceptible contrast. The measurement of the contrast sensitivity of the eye is a more complete assessment of vision than standard visual acuity measurement. It provides an evaluation of the detection of objects (usually sinusoidal gratings) of varying spatial frequencies and of variable contrast and thus obtaining a contrast sensitivity function (CSF). Example: following amblyopia treatment, some cases still have the same visual acuity while the CSF is improved. See contrast sensitivity chart; contrast sensitivity function; spurious resolution; Arden grating test; Vistech.
How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
| Those with dementia possess Contrast Sensitivity Deficit (see sidebar, page 12), meaning they have a harder time perceiving differences in foreground and background when the two have similar color or contrast. Edge contrast sensitivity is assessed using the Melbourne Edge Test. Visual acuity, depth perception, contrast sensitivity, and peripheral vision decline with age and these changes reduce or alter the environmental data your brain uses to maintain balance. |
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|