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Color Vision Guide guide for kids, teachers, and companies on color blindness. http://www.colorblind.to/
ColorView Lenses produces specialized eyeglass lenses to help people with congenital red-green color deficiency to distinguish colors more easily. http://www.color-view.com/
Creamer Color Chart eye test to screen preschoolers for red-green colorblindness. http://www.colorblindtest.com/
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