7. What are the physical symptoms of the disease?
Symptoms of color blindness can vary because different people see different shades of colors.You may not be able to see red, green, and blue or variations of those colors. If the color vision problem is not severe, you may not realize that you are seeing something different than a person who has normal color vision.
"Color Blindness - Symptoms." WebMD. 31 Oct. 2007. <.http://www.webmd.com/eye-health/tc/color-blindness-symptoms. >
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