Approximately one in twelve men can be affected by color deficiency and in the case of women, the number is one in two hundred women. Worldwide, three hundred million have color blindness. The majority of people inherit color-blindness and some become colorblind in their lifetime due to diseases like diabetes, accidents, etc. Red-green color-blindness is the most common type of it. It really doesn't create any problem in a clear vision for most people. A survey says that color blindness is seen in less than 2% in African- Americans, 6% of Caucasian boys, 3% of Asian and Hispanic boys.