Color blindness

color blindness

class of disease

Subclass of	vision disorder, blindness, disease
Dem name after	John Dalton
Health specialty	ophthalmology
Medical examination	Ishihara test
ICD-9-CM	368.5, 368.59
NCI Thesaurus ID	C3891
Stack Exchange tag	https://stackoverflow.com/tags/color-blindness

Color blindness anaa color vision deficiency (CVD) be de decreased ability to see color, differences insyd color, anaa distinguish shades of color. De severity of color blindness dey range from mostly unnoticeable to full absence of color perception.

Color blindness usually be a sex-linked inherited problem anaa variation insyd de functionality of one anaa more of de three classes of cone cells insyd de retina, wich dey mediate color vision. De most common form be caused by a genetic condition dem call congenital red–green color blindness (wey dey include protan den deutan types), wich dey affect up to 1 insyd 12 males (8%) den 1 insyd 200 females (0.5%). De condition be more prevalent insyd males, secof de opsin genes responsible dey locate on de X chromosome. Rarer genetic conditions wey dey cause color blindness dey include congenital blue–yellow color blindness (tritan type), blue cone monochromacy, den achromatopsia. Color blindness sanso fi result from physical anaa chemical damage to de eye, de optic nerve, parts of de brain, anaa from medication toxicity. Color vision naturally sanso dey degrade insyd old age.

Dem usually dey do diagnosis of color blindness plus a color vision test, such as de Ishihara test. Der be no cure give chaw causes of color blindness; however, der be ongoing research into gene therapy for sam severe conditions wey dey cause color blindness. Minor forms of color blindness no significantly dey affect daily life den color blind people automatically dey develop adaptations den coping mechanisms to compensate for de deficiency. However, diagnosis fi allow an individual, anaa dema parents/teachers, to actively accommodate de condition. Color blind glasses (e.g. EnChroma) fi help de red–green color blind at sam color tasks, buh dem no dey grant de wearer "normal color vision" anaa de ability to see "new" colors. Sam mobile apps fi use a device ein camera to identify colors.

Dey depend on de jurisdiction, color blind people be ineligible for certain careers, such as aircraft pilots, train drivers, police officers, firefighters, den members of de armed forces. De effect of color blindness on artistic ability be controversial, buh a number of famous artists be believed to have been color blind.

Read further

• Kaiser, Peter K.; Boynton, Robert M. (1996). Human color vision. Washington, DC: Optical Society of America. ISBN 978-1-55752-461-4. OCLC 472932250.
• McIntyre, Donald (2002). Colour blindness: causes and effects. Chester: Dalton Publishing. ISBN 978-0-9541886-0-3. OCLC 49204679.
• Rubin, Melvin L.; Cassin, Barbara; Solomon, Sheila (1984). Dictionary of eye terminology. Gainesville, Fla: Triad Pub. Co. ISBN 978-0-937404-07-2. OCLC 10375427.
• Shevell, Steven K. (2003). The science of color. Amsterdam: Elsevier. ISBN 978-0-444-51251-2. OCLC 52271315.
• Hilbert, David; Byrne, Alexander (1997). Readings on color. Cambridge, Mass: MIT Press. ISBN 978-0-262-52231-1. OCLC 35762680.
• Stiles, W. S.; Wyszecki, Günter (2000). Color science: concepts and methods, quantitative data and formulae. Chichester: John Wiley & Sons. ISBN 978-0-471-39918-6. OCLC 799532137.
• Kuchenbecker, J.; Broschmann, D. (2014). Plates for color vision testing. New York: Thieme. ISBN 978-3-13-175481-3.
• Dalton J (1798). "Extraordinary facts relating to the vision of colours: with observations". Memoirs of the Literary and Philosophical Society of Manchester. 5: 28–45. OCLC 9879327.

External links

• "A Glossary of Color Science." Archived 4 October 2015 at the Wayback Machine