{"id":622,"count":1,"description":"The Ishihara set of coloured dotted plates showing a number or pattern is a useful screening tool for colour defects.\r\n\r\nDr Shinobu Ishihara established the Ishihara Color Vision plate test in 1918. The Ishihara plates are a popular colour vision test in clinics to differentiate colour blind people or types of colour vision deficiency. Red-green types of colour blindness are the most common (Found in 8% of males as is a sex-linked genetic defect). An online test is much less accurate than this, and there are more advanced colour blind tests such as a Nagel anomaloscope which is a \u201cgold standard\u201d reference test for identifying and diagnosing types of red-green colour deficiency.","link":"https:\/\/peterdarcy.com.au\/tag\/ishihara-test\/","name":"Ishihara test","slug":"ishihara-test","taxonomy":"post_tag","meta":[],"yoast_head":"\nIshihara test Archives | Peter D'Arcy Optometrist | Bega<\/title>\n<meta name=\"description\" content=\"The Ishihara coloured dotted plates seen ideally by "daylight" bulb illumination showing a number or pattern is a useful screening tool for colour defects.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ishihara test Archives\" \/>\n<meta property=\"og:description\" content=\"The Ishihara coloured dotted plates seen ideally by "daylight" bulb illumination showing a number or pattern is a useful screening tool for colour defects.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/peterdarcy.com.au\/tag\/ishihara-test\/\" \/>\n<meta property=\"og:site_name\" content=\"Peter D'Arcy Optometrist\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"@id\":\"https:\/\/peterdarcy.com.au\/tag\/ishihara-test\/\",\"url\":\"https:\/\/peterdarcy.com.au\/tag\/ishihara-test\/\",\"name\":\"Ishihara test Archives | Peter D'Arcy Optometrist | Bega\",\"isPartOf\":{\"@id\":\"https:\/\/peterdarcy.com.au\/#website\"},\"description\":\"The Ishihara coloured dotted plates seen ideally by \\\"daylight\\\" bulb illumination showing a number or pattern is a useful screening tool for colour 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