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Eigengrau (German for "intrinsic gray"; pronounced [ˈʔaɪ̯gŋ̍ˌgʁaʊ̯] ⓘ), also called Eigenlicht (Dutch and German for "intrinsic light"), dark light, or brain gray, is the uniform dark gray background color that many people report seeing in the absence of light.
An artist's representation of how some people may see phosphenes by retinal stimulation. A phosphene is the phenomenon of seeing light without light entering the eye. The word phosphene comes from the Greek words phos (light) and phainein (to show). Phosphenes that are induced by movement or sound may be associated with optic neuritis. [1] [2]
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception.In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [6]
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However, as of 2021 such theories do not have empirical support. [3] The lack of visual sensory feedback in blind people is known to affect the calibration process for body movement. [ 7 ] It is also suspected that reinforcement of behavior plays a role in the development of RRBs. [ 1 ]
The LMS color space can be used to emulate the way color-blind people see color. An early emulation of dichromats were produced by Brettel et al. 1997 and was rated favorably by actual patients. An example of a state-of-the-art method is Machado et al. 2009. [20]
Created Date: 8/30/2012 4:52:52 PM
A color-blind society, in sociology, is one in which racial classification does not affect a person's socially created opportunities. A racially color blind society is or would be free from differential legal or social treatment based on race or color. A color-blind society would have race-neutral governmental policies and would reject all ...