Are you one of the 300 million people affected by color blindness? Take this simple, doctor-approved test to determine your color vision deficiency and learn more about the condition.

People who are colorblind may be missing a life-saving warning sign of bladder cancer. Analysis of the electronic health ...

A large U.S. health records study suggests that difficulty seeing blood in urine may put color-blind patients at higher risk.

The basics Being “color blind” actually covers a very wide range of what researchers call “color vision deficiency.” Only a tiny percentage of people see no color at all, just shades of black and ...