What Does It Mean to Be Color Blind?
Color blindness is not a form of blindness at all, but a deficiency in the way you see color. With this vision problem, you have difficulty distinguishing certain colors, such as blue and yellow or red and green. Color blindness (or, more accurately, color vision deficiency) is an inherited condition that affects males more frequently than females.
According to Prevent Blindness America, an estimated 8 percent of males and less than 1 percent of females have color vision problems. Read more.