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  2. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    These color charts show how different color blind people see compared to a person with normal color vision. [ dubious – discuss ] Much terminology has existed and does exist for the classification of color blindness, but the typical classification for color blindness follows the von Kries classifications, [ 25 ] which uses severity and ...

  3. Color vision test - Wikipedia

    en.wikipedia.org/wiki/Color_vision_test

    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.

  4. Farnsworth–Munsell 100 hue test - Wikipedia

    en.wikipedia.org/wiki/Farnsworth–Munsell_100...

    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]

  5. Only 18% Can Get A Perfect Score On This Color Blindness Test

    www.aol.com/lifestyle/only-18-perfect-score...

    You’ve never seen these ones before!You might have taken color blindness tests with numbers online or when getting your eyes checked at the doctor’s, but I guarantee you haven’t seen these ...

  6. Ishihara test - Wikipedia

    en.wikipedia.org/wiki/Ishihara_Test

    Research has shown that scores below twelve indicate color vision deficiency, and twelve or more correct indicate normal color vision, with 97% sensitivity and 100% specificity. The sensitivity of the Ishihara test varies by the number of plates allowed to pass, which can vary by institutional policy.

  7. What's it like to be color blind?

    www.aol.com/lifestyle/2016-10-04-what-s-it-like...

    Here’s a quick and easy way to test your color blindness. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For ...

  8. Holmgren's wool test - Wikipedia

    en.wikipedia.org/wiki/Holmgren's_wool_test

    From the mistakes made, the doctor can diagnose the type of colour blindness. [7] If the patient chooses blue or violet colors in the red matching test, it means that they have red blindness. [8] If the patient choose gray or dark brown colors on the green color matching, it indicates that they may have a green blindness problem. [8]

  9. Achromatopsia - Wikipedia

    en.wikipedia.org/wiki/Achromatopsia

    The conditions include: monochromatic color blindness, poor visual acuity, and day-blindness. The syndrome is also present in an incomplete form that exhibits milder symptoms, including residual color vision. Achromatopsia is estimated to affect 1 in 30,000 live births worldwide.