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Color blindness; Other names: Color vision deficiency, impaired color vision [1]: Example of an Ishihara color test plate. Viewers with normal color vision should clearly see the number "74".
11 is a free-to-call single non-emergency number medical helpline operating in England, Scotland and Wales. The 111 phone service has replaced the various non-geographic 0845 rate numbers and is part of each country's National Health Service: in England the service is known as NHS 111; [1] in Scotland, NHS 24; [2] and in Wales, NHS 111 Wales.
Colour blindness is tested using these eight placards. They are known as Ishihara charts. They are named after their inventor, Japanese ophthalmologist Shinobu Ishihara (1897–1963). Each image consists of closely packed coloured dots and a number. The patient must identify the number or image he or she can see. The type of colour blindness ...
Possible number formats for UK telephone numbers are: ... 0800 11 11 for ChildLine and 0845 4647 for NHS Direct in Wales. The number 159 ... Removes details of last ...
An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. A pseudoisochromatic plate (from Greek pseudo, meaning "false", iso, meaning "same" and chromo, meaning "color"), often abbreviated as PIP, is a style of standard exemplified by the Ishihara test, generally used for screening of color vision defects.
NHS Direct Wales is a 24-hour telephone and internet health advice service provided by NHS Wales to enable people to obtain advice when use of the national emergency telephone number (999 or 112) does not seem to be appropriate but there is some degree of urgency; it also functions as a confidential advice service for some medical matters which a patient might be reluctant to discuss with ...
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The Farnsworth–Munsell 100 Hue Color Vision test is a color vision test often used to test for color blindness.The system was developed by Dean Farnsworth in the 1940s and it tests the ability to isolate and arrange minute differences in various color targets with constant value and chroma that cover all the visual hues described by the Munsell color system. [1]
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