DirectoryHealthcare.com provides the useful information on animal health, diseases & conditions, fitness, general health, long term care, mental health, nutrition, weight loss & yoga.
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/