First there was “the dress,” then there was the sneakers, now there’s a debate over the color blue. If you’ve ever argued with a friend over whether something is blue or green, you’re not alone. A new ...

Online color blindness tests may give people an idea of whether they may be color blind and if so, which type of color blindness they might have. This information comes from the National Eye Institute ...

What color is a tree, or the sky, or a sunset? At first glance, the answers seem obvious. But it turns out there is plenty of variation in how people see the world — both between individuals and ...

Our ability to see with color vision depends on the presence and function of light-sensing pigments in the cones of our eyes. Color blindness, or color vision deficiency, happens when one or more of ...

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