martes, 14 de febrero de 2017


It was an accident at first. Don McPherson made special sunglasses. These glasses protected doctors duringlaser surgery. They also made colors look brighter. Doctors started wearing them outside of the operating room. McPherson’s friend wore the glassesand he could see more colors. McPherson investigated the possibility of helping colorblind people. He started En Chroma labs to study colorblindness.They make helpful glasses for colorblind people.

We see color because of the “cones” inour eyes. People have three cones: blue, red, and green. Red and greencones sometimes get too close, and those colors look the same. This is colorblind ness. En Chroma glasses filter light, so the red and green cones get different light. This helps colorblind people to see color with theses unglasses. En Chroma also has a colortest on their website and now makes in door and computer glasses too.

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