App: Color Blindness Test

 


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Relevant Background: "Color blindness (color vision deficiency) is the decreased ability to see color or differences in color... It can impair such tasks as selecting ripe fruit, choosing clothing, and reading traffic lights.[3] Color blindness may make some educational activities more difficult.[3] However, problems are generally minor, and most color-blind people adapt.[3] People with total color blindness (achromatopsia) may also be uncomfortable in bright environments[3] and have decreased visual acuity...The most common cause of color blindness is an inherited problem in the development of one or more of the three sets of the eyes' cone cells, which sense color.[3] Among humans, males are more likely to be color blind than females, because the genes responsible for the most common forms of color blindness are on the X chromosome.[3] Females have two X chromosomes, so a defect in one is typically compensated for by the other. Non-color-blind females can carry genes for color blindness and pass them on to their children.[3] Males only have one X chromosome and therefore always express the genetic disorder if they have the recessive gene.[3] Color blindness can also result from physical or chemical damage to the eye, the optic nerve, or parts of the brain.[3] Diagnosis is typically with the Ishihara color test; other methods include genetic testing....There is no cure for color blindness.[3] Diagnosis may allow a person's teacher to change the teaching method to accommodate the handicap.[1] Special lenses may help people with red–green color blindness in bright light.[3] Mobile apps can help people identify colors....Red–green color blindness is the most common form, followed by blue–yellow color blindness and total color blindness.[3] Red–green color blindness affects up to 8% of males and 0.5% of females of Northern European descent.[3][5] The ability to see color also decreases in old age.[3] In certain countries, color blindness may make people ineligible for certain jobs,[1] such as those of aircraft pilots, train drivers, crane operators, and people in the armed forces.[1][6] The effect of color blindness on artistic ability is controversial.[1][7] The ability to draw appears to be unchanged, and a number of famous artists are believed to have been color blind....In almost all cases, color blind people retain blue–yellow discrimination, and most color blind individuals are anomalous trichromats rather than complete dichromats. In practice, this means that they often retain a limited discrimination along the red–green axis of color space, although their ability to separate colors in this dimension is reduced. Color blindness very rarely refers to complete monochromatism....Dichromats often confuse red and green items. For example, they may find it difficult to distinguish a Braeburn apple from a Granny Smith or red from green of traffic lights without other clues—for example, shape or position. Dichromats tend to learn to use texture and shape clues and so may be able to penetrate camouflage that has been designed to deceive individuals with normal color vision...Colors of traffic lights are confusing to some dichromats as there is insufficient apparent difference between the red/amber traffic lights and sodium street lamps; also, the green can be confused with a dirty white lamp. This is a risk on high-speed undulating roads where angular cues cannot be used. British Rail color lamp signals use more easily identifiable colors: The red is blood red, the amber is yellow and the green is a bluish color. Most British road traffic lights are mounted vertically on a black rectangle with a white border (forming a "sighting board") and so dichromats can more easily look for the position of the light within the rectangle—top, middle or bottom. In the eastern provinces of Canada horizontally mounted traffic lights are generally differentiated by shape to facilitate identification for those with color blindness.[citation needed] In the United States, this is not done by shape but by position, as the red light is always on the left if the light is horizontal, or on top if the light is vertical. However, a lone flashing light (e.g. red for stop, yellow for caution) is still problematic....Monochromacy, also known as "total color blindness", is the lack of ability to distinguish colors (and thus the person views everything as if it were on a black and white television); caused by cone defect or absence. Monochromacy occurs when two or all three of the cone pigments are missing and color and lightness vision is reduced to one dimension...Dichromacy is hereditary. Protanopia and deuteranopia are hereditary and sex-linked, affecting predominantly males...Anomalous trichromacy is a common type of inherited color vision deficiency, occurring when one of the three cone pigments is altered in its spectral sensitivity...The Ishihara color test, which consists of a series of pictures of colored spots, is the test most often used to diagnose red–green color deficiencies.[31] A figure... is embedded in the picture as a number of spots in a slightly different color, and can be seen with normal color vision, but not with a particular color defect. The full set of tests has a variety of figure/background color combinations, and enable diagnosis of which particular visual defect is present. The anomaloscope, described above, is also used in diagnosing anomalous trichromacy....Optometrists can supply colored spectacle lenses or a single red-tint contact lens to wear on the non-dominant eye...Many mobile and computer applications have been developed to help color blind individual to view better differentiate between colors. Some applications launch a simulation of colorblindness to allow people with typical vision to understand how people with color blindness see the world, which can improve inclusive design for both groups. This is achieved using an LMS color space....After analyzing what colors are confusing, daltonization algorithms can be used to create a color filter for people with color blindness to notice some color differences more easily...Color blindness may make it difficult or impossible for a person to engage in certain occupations....Color vision is important for occupations using telephone or computer networking cabling, as the individual wires inside the cables are color-coded using green, orange, brown, blue and white colors.[69] Electronic wiring, transformers, resistors, and capacitors are color-coded as well, using black, brown, red, orange, yellow, green, blue, violet, gray, white, silver, gold.[70]...Some countries have refused to grant driving licenses to individuals with color blindness. In Romania, there is an ongoing campaign to remove the legal restrictions that prohibit colorblind citizens from getting drivers' licenses...The usual justification for such restrictions is that drivers of motor vehicles must be able to recognize color-coded signals, such as traffic lights or warning lights...While many aspects of aviation depend on color coding, only a few of them are critical enough to be interfered with by some milder types of color blindness....Inability to distinguish color does not necessarily preclude the ability to become a celebrated artist. ...Some tentative evidence finds that color blind people are better at penetrating certain color camouflages..." ("Color Blindness", https://en.wikipedia.org/wiki/Color_blindness)
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Relevant Insurance Coverage for Business, Office & Gaming Equipment :
a) Personal Property Coverage that covers all electronics from perils like theft
b) Business equipment and Data Coverage
c) Commercial equipment coverage that covers computers, photo copiers and other electronics
d) Auto Insurance: OPCF 38 - Agreed limit for automobile Electronic Accessories and Equipment
e) Travel & Health
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Location: North America

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