SHREVEPORT, La. -- Do you see the world in different colors? What about no colors at all? The number of people with color blindness, or what is actually color deficiency, are low. But what does it mean to be color blind? There are two types. The first is genetic; a person is born with it. The second happens with age. âAnd that has to do with the cones in the retina, and your cones are responsible for daytime vision,â said Dr. Chris Shelby from the WK Eye Institute. âThere's actually three of them, there's a red, green, and blue cone.â