A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor ...

Color blindness, an inherited condition often happens when someone cannot distinguish certain colors like red, green and rarely blue. Strangely, some people are color blind but don’t know it.

This may include: There are tests online to test people for ... such as blue and green, red and purple, or yellow and pink. Color vision deficiencies, such as tritanopia, may occur due to an ...

According to one such test, I likely have "mild deuteranomaly"—a form of color blindness that mostly interferes with my ability to detect various shades of red and green, and impacts around 6% ...