OMAHA, Neb. (AP) — The federal government has joined more than a dozen former workers in suing Union Pacific over the way it used a vision test to disqualify workers the railroad believed were color ...

A retrospective cohort study suggested that people with color blindness may have a higher risk of mortality from bladder cancer compared with those who can see colors. The researchers hypothesized ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Color blindness is known to ...

The most common types of color blindness, or color vision deficiency, are genetic. However, other types may develop due to injuries, eye diseases, health problems, and side effects of treatment.

Ray St. Clair first learned he saw things differently when he was about nine years old and walking down Congress Street in downtown Tucson with his mother. "Look at the gray car," he said to her.

Daltonism is a specific type of red-green color vision deficiency, also known as color blindness. People with red-green color vision deficiency may confuse colors that contain red or green elements.

You may know someone who can’t tell the difference between specific colors — and there is a scientific reason it could be happening. The condition is known as color blindness. To share a better ...

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. This marks the first story ...

Not unfrequently blindness to color is of the most temporary nature, a mere consequence of sudden and trifling determination of blood to the head. White Cooper relates the case of a well-fed clergyman ...