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  2. Color blindness - Wikipedia

    en.wikipedia.org/wiki/Color_blindness

    An issue with color selection is that the colors with the greatest contrast to the red–green color blind tend to be colors of confusion to the blue–yellow color blind and vice versa. In 2018, UX designer Allie Ofisher published 3 color palettes with 6 colors each, distinguishable for all variants of color blindness.

  3. Dog - Wikipedia

    en.wikipedia.org/wiki/Dog

    The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the gray wolf. Also called the domestic dog, it was selectively bred from an ...

  4. Blindness in animals - Wikipedia

    en.wikipedia.org/wiki/Blindness_in_animals

    Some animals that are prone to the development of cataracts are dogs, elephants, horses, pandas and seals. Cataracts are less common in cats [6] in comparison to dogs, where it is fairly common. Just like with humans, cataract extraction surgery can be performed on cats and dogs.

  5. Color blind (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Color_blind_(disambiguation)

    Congenital red-green color blindness, the genetic condition that causes the most cases of color blindness.; Dichromacy, a type of color vision possessed by most mammals; partial color blindness when in humans.

  6. Monochromacy - Wikipedia

    en.wikipedia.org/wiki/Monochromacy

    Rod monochromacy (RM), also called congenital complete achromatopsia or total color blindness, is a rare and extremely severe form of an autosomal recessively inherited retinal disorder resulting in severe visual handicap.

  7. Evolution of color vision - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_color_vision

    Researchers studying the opsin genes responsible for color-vision pigments have long known that four photopigment opsins exist in birds, reptiles and teleost fish. [3] This indicates that the common ancestor of amphibians and amniotes (≈350 million years ago) had tetrachromatic vision — the ability to see four dimensions of color.

  8. Guide dog - Wikipedia

    en.wikipedia.org/wiki/Guide_dog

    A blind woman learns to use her guide dog in a test environment. Guide dogs (colloquially known in the US as seeing-eye dogs [1]) are assistance dogs trained to lead blind or visually impaired people around obstacles. Although dogs can be trained to navigate various obstacles, they are red–green colour blind and incapable of interpreting ...

  9. Color blind glasses - Wikipedia

    en.wikipedia.org/wiki/Color_blind_glasses

    Color blind glasses or color correcting lenses are light filters, usually in the form of glasses or contact lenses, that attempt to alleviate color blindness, ...