Perhaps: Color blindness is an abnormal condition characterized by the inability to clearly distinguish different colors of the spectrum. The difficulties can be mild to severe. It is a misleading term because people with color blindness are not blind. Rather, they tend to see colors in a limited range of hues; a rare few may not see colors at all. http://medical-dictionary.thefreedictionary.com/red-green.
Answered 12/24/2012
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