Most tests for contrast sensitivity measure ability to see low contrast letters/pictures. Reduced contrast sensitivity is usually associated with difficulty with day-to-day visual tasks.
a method of testing overall vision quality varying the illumination and size of the object being viewed. This is considered a more comprehensive test than the standard Snellen test.
The ability to detect subtle differences between details that are not black on white such as shades of gray; important in determining the quality of vision after refractive surgery
The ability of the eye to detect the line of demarcation between an object and its background or an adjacent object.
The ability to perceive differences between an object and its background.
Refers to the ability of an observer to perceive or detect a difference between the luminance of two regions of the visual field (seen simultaneously) or the difference between two luminance values presented successively over time.
In visual perception, the ability to discriminate between dark and light stripes under various conditions.
Contrast sensitivity is the ability to discern between luminosities of different levels in a static . Contrast sensitivity varies between individuals, maxing out at approximately 20 years of age, and at spatial frequencies of about 2-5 cycles/degree.