About 8% of men and .5% of women suffer from this affliction. It isn’t something they have, it’s something they lack. It doesn’t affect how long you live and has no bearing on your heart, lungs, or brain. Do you know what the affliction is? It’s being colorblind. That was a problem that Savannah Allen had when she enrolled in Dental Hygienist School at the University of Cincinnati. The problem is that whenever she looked at green, she saw brown. And whenever she...

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