test for colour blindness

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• Ishihara test — /ɪʃiˈharə tɛst/ (say ishee hahruh test) noun a test for colour blindness, consisting of a circular panel made up of coloured dots with some of the dots in a contrasting colour delineating figures inside the circle. {named after Shinobu Ishihara,… …  

• Color perception test — Intervention Example of an Ishihara color test plate. The numeral 74 should be clearly visible to viewers with normal color vision. Viewers with dichromat or anomalous trichromat may read it as 21 , and viewers with achromat may see nothing …   Wikipedia

• Ishihara color test — The Ishihara Color Test is a test for red green color deficiencies. It was named after its designer, Dr. Shinobu Ishihara, a professor at the University of Tokyo, who first published his tests in 1917. S. Ishihara, Tests for colour blindness… …   Wikipedia

• Color blindness — Colorblind and Colourblind redirect here. For other uses, see Colorblind (disambiguation). Color blindness or color deficiency Classification and external resources An 1895 illustration of normal vision and various kinds of color blindness …   Wikipedia

• Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

• Cerebral achromatopsia — is a type of color blindness that is caused by damage to the cerebral cortex of the brain, rather than abnormalities in the cells of the eye s retina. It is often confused with congenital achromatopsia.[1] Cerebral achromatopsia differs because… …   Wikipedia

• Ishihara-Farbtafel — Das Prinzip der Ishihara Tafeln in animierter Schwarz Weiß Darstellung. Die Ishihara Farbtafeln werden zur Aufdeckung einer Rot Grün Sehschwäche oder einer (sehr viel selteneren) Gelb Blau Sehschwäche verwendet. Entwickelt und später benannt… …   Deutsch Wikipedia

• Cartas de Ishihara — Ejemplo de una carta de color Ishihara. El número 74 debe ser claramente visible para los individuos con visión normal. Las personas con anomalía de tricromacia pueden leer 21 , y aquellos con visión acromática no observarán nada. Las Cartas de… …   Wikipedia Español

• Anomaloscope — An anomaloscope is an instrument used to test for color blindness. It is used to measure quantitative and qualitative anomalies in colour perception. It can be used to determine whether a person is a tritanope, dichromat or achromatop. The… …   Wikipedia

• Synesthesia — For other uses, see Synesthesia (disambiguation). How someone with synesthesia might perceive certain letters and numbers. Synesthesia (also spelled synæsthesia or synaesthesia, plural synesthesiae or synaesthesiae), from the ancient Greek σύν… …   Wikipedia

• Sunglasses — For the Divine Brown song, see Sunglasses (song). Wearing sunglasses under direct sunlight: Large lenses offer good protection, but broad temple arms are also needed against stray light from the sides. Sunglasses or sun glasses are a form of… …   Wikipedia