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The Ishihara 38-plate test is the standard diagnostic tool for detecting color blindness. The test contains 38 circles with patterns created by sets of irregularly shaped dots in two or more colors. The Farnsworth Lantern test is used for more critical testing applicati...


Neutral hues, like off-white and brown, compliment red. Other striking colors, like yellow and purple, also go with red. Other shades that pair well with red include basic shades like black and white.


The inability of the cone cells in the retina to correctly detect one or more of the red, green or blue light spectra is called color blindness, according to the American Academy of Opthamology. Lack of color distinction between red and green colors is the most common f...


Mixing red and green together makes the color brown. The three primary colors are red, blue and yellow. Green is formed by mixing blue and yellow, and it is a secondary color.


Although many people believe that dogs only see in black and white, these animals are actually red-green colorblind. This means that dogs can see yellow and blue, but they cannot see red or green.


Cats are color-blind, experiencing a color blindness similar to what some humans have. Most colors are distinguishable, but distinguishing red and green is difficult due to a lack of specific cone photoreceptors in their eyes.


According to Colour Blind Awareness, girls can become colorblind if they inherit the colorblind gene from both their mother and father. It is rare for girls to become colorblind, and more men than women are colorblind around the world.