It’s well known that dogs don’t see as many colors as we do – similar to color blindness in people. Whereas humans have three types of cones in our eyes, allowing us to identify combinations of red, ...

Many animals have color preferences. For example advertising research has shown that humans are attracted to the color red. Suppose that you were a dog-toy manufacturer and you wanted to select colors ...

Some of the most common causes of blindness in dogs are glaucoma, cataracts, injury, diabetes, infection, and chronic dry eye ...

Color blindness, or color vision deficiency, causes a person to see colors differently from most other people. There are several types of color blindness. Color vision deficiency or loss has multiple ...

The average human eye can see as many as 10 million variations in color, according to some estimates, from purest gray to laser green. Now scientists say they’ve broken out of that familiar range and ...

An estimated 300 million people worldwide are color-blind. This typically means they can't distinguish certain shades of color, they struggle to tell how bright colors are or, more rarely, they can't ...

There are three main types of color vision deficiency: red-green, blue-yellow, and complete. Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to ...