What are the causes of Color Blindness and how does it present?
What is Color Blindness? The first report on color blindness was written by the British chemist John Dalton who was himself afflicted with it. Your ability to see colors across the spectrum begins with your eyes ability to accurately distinguish the 3 primary colors; red, blue and green. Light enters the eye through the lens and passes through the transparent main body of the eye called the vitreous body. It then hits color sensitive cells called cones in the retina at the back of the eye. Chemicals in these cones distinguish among colors and send information through the optic nerve to the brain. If your cones lack one or more light sensitive chemicals you may see only two colors for example; either red and green or blue and yellow. Symptoms: The most common color deficiency is an inability to see red and green. Instead of a normal spectrum, a person with red-green color deficiency will have one or two neutral or grey areas where these colors normally appear. Most people with red-green
