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  1. Color blindness or color vision deficiency (CVD) is the decreased ability to see color or differences in color. The severity of color blindness ranges from mostly unnoticeable to full absence of color perception.

  2. Feb 24, 2021 · There are seven official diagnoses of color blindness: four different types of color blindness fall in the red-green category, two are in the blue-yellow spectrum and one version describes a type of vision completely lacking in color.

  3. Sep 1, 2023 · What Is Color Blindness? When the cones have all the various pigments -- called photopigments -- your eye sees all possible colors. If there’s a problem with the pigments, you won’t see colors the...

    • Red-Green Color Blindness
    • Blue-Yellow Color Blindness
    • Complete Color Blindness

    Red-green color blindness is the most common form of the condition. This type of color blindness makes it difficult to differentiate between shades of red and green. There are four types of red-green color blindness: 1. Deuteranomalyoccurs when the M-cones (medium wavelength cones) of the eye are present but dysfunctional. It causes green to look r...

    Blue-yellow color blindness is less commonthan red-green color blindness, though red-green color blindness often accompanies it. With this type of color blindness, you have trouble differentiating between blue and green, as well as between yellow and red. 1. Tritanomalyoccurs when the S-cones (short wavelength cones) of the eye are present but dysf...

    Complete color blindness is rare. This type of color blindness, also called achromatopsia, occurs when all the cones of the eye are either dysfunctional or missing. Some experts consider another type of color blindness, blue cone monochromacy, to be a form of achromatopsia since it involves a partial or total lack of color vision.

  4. Feb 20, 2024 · What is Color Blindness? Color blindness causes you to see colors differently than most people. This common condition makes it difficult to distinguish between certain colors.

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  5. Dec 24, 2019 · What is color blindness? Color blindness occurs when problems with the color-sensing pigments in the eye cause a difficulty or an inability to distinguish colors. The majority of people who are...

  6. Feb 27, 2019 · Color blindness is an inherited deficiency affecting how one sees certain colors. Learn the symptoms, causes of being color blind & types of color blindness. Colorblind people can see colors, but they can't always tell them apart.

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