Color blindness affects millions of people worldwide. It affects 1 in 12 men and 1 in 200 women. The condition ranges from a variety of classes, red-green color blindness being the most common.
Most people who suffer from color blindness are not blind to color, but have a reduced ability to see them. Color blindness is also called Color Vision Deficiency (CVD).
CVD can be acquired, but most are inherited genetically. The genes that influence the colors inside the eyes, called ‘photopigments,’ are carried on the X chromosome. If these genes are abnormal or damaged, color blindness occurs.