{"id":7,"date":"2007-07-27T23:05:03","date_gmt":"2007-07-28T02:05:03","guid":{"rendered":"http:\/\/ishihara.com.br\/blog\/2007\/07\/27\/about-ishihara-color-test\/"},"modified":"2008-04-09T21:02:49","modified_gmt":"2008-04-10T00:02:49","slug":"about-ishihara-color-test","status":"publish","type":"post","link":"https:\/\/www.ishihara.com.br\/blog\/2007\/07\/27\/about-ishihara-color-test\/","title":{"rendered":"About Ishihara color test."},"content":{"rendered":"

<\/p>\n

From Wikipedia, the free encyclopedia:<\/strong><\/p>\n

\n

The Ishihara Color Test<\/strong> is a test for red-green color deficiencies<\/a>. It was named after its designer, Dr. Shinobu Ishihara<\/a>, a professor at the University of Tokyo<\/a>, who first published his tests in 1917<\/a>. [1]<\/a><\/sup><\/p>\n

It consists of a number of colored plates, each of which contains a circle made of many different sized dots of slightly different colors, spread in a seemingly random manner. Within the dot pattern, and differentiated only by color, is a number. What, or even if, a number is visible indicates if and what form of color blindness the viewer has. The full test consists of thirty-eight plates, but the existence of a deficiency is usually clear after no more than four plates.<\/p>\n

Common plates include a circle of dots in shades of green and light blues with a figure differentiated in shades of brown or a circle of dots in shades of red, orange and yellow with a figure in shades of green; the first testing for protanopia<\/a> and the second for deuteranopia<\/a>.<\/p>\n

\"\"<\/p>\n

Example of an Ishihara color test plate. The numeral “74” should be clearly visible to viewers with normal color vision. Viewers with dichromat<\/a> or anomalous trichromat<\/a> may read it as “21”, and viewers with achromat<\/a> may see nothing.<\/span><\/p>\n

References: Ishihara color test.<\/a><\/span><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

From Wikipedia, the free encyclopedia: 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. [1] It consists of a number of colored plates, each of which contains a circle made […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,7],"tags":[13,16,15,10,11,9,12,38,14,17,8],"_links":{"self":[{"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/posts\/7"}],"collection":[{"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/comments?post=7"}],"version-history":[{"count":0,"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/posts\/7\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/media?parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/categories?post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ishihara.com.br\/blog\/wp-json\/wp\/v2\/tags?post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}