Finally: Sunglasses that cure colorblindness

In any case, I took them outside on a sunny day — and was floored. I mean, I had a visceral reaction to what I saw.

Colors I see just fine — blues, yellows, oranges — looked exactly the same. But all of a sudden, greens and reds looked richer. It’s almost impossible to describe in words. In fact, it’s impossible for normal-vision people to understand, even by wearing them, because they don’t see anything different with the EnChroma glasses on!

But an old brown Vermont barn roof was revealed, quite clearly, to be salmon red. Yards full of leafy trees and plants suddenly had different shades of green. Everywhere I looked, desaturated or barely discernible red things were popping.

There was a weird sensation of seeing red and green areas in the periphery of my vision.