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

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.

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 ...

Most individuals with color vision deficiency have had it since birth. However, people can develop it later in life. If it develops due to a health problem, color blindness can worsen over time. Color ...