“In 2010, Don McPherson, a glass engineer working in San Francisco, lent a pair of glasses he had designed to protect doctors’ eyes during laser corrective surgery to a friend to use as sunglasses during a game of Frisbee. Much to the two men’s surprise, the glasses had the unexpected effect of allowing the friend to see hues he had never before experienced.  While the effect of wearing EnChroma glasses is fascinating, it’s what happens after users take off the glasses that is truly noteworthy: Many claim they still see enhanced colors even without the glasses.”

http://www.newsweek.com/2015/05/15/enchroma-glasses-may-permanently-cure-color-blindness-328762.html

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