An interview with Dr. Susan Fromer
What is Colorblindness? Color blindness, or color vision deficiency, is the inability to perceive color differences under normal lighting conditions. Color blindness affects a significant percentage of the population. People usually have three types of cone cells in the eye. Each type senses either red, green or blue light. You see color when your cone cells sense different amounts of these three basic colors. The highest concentration of cone cells are found in the macula, which is the central part of the retina .Inherited color blindness happens when you don't have one of these types of cone cells or they don't work right. There are multiple types of color blindness, but the most common types involve an inability to distinguish between either red and green or blue and yellow. You may not see one of the basic colors, or you may see a different shade of that color or a different color. This type of color vision problem doesn't change over time.