11 Nine% of men and 1/2% of women are color-blind

The term color blindness is actually a misnomer. Most people who are "color-blind" are not blind to all colors, but really have a color deficiency that makes it hard for them to see the differences between some colors.

There are many different kinds of color blindness, but the most common is a difficulty distinguishing between reds, yellows, nd greens This is called "red-green" color blindness.