Spanish scientists: EnChroma glasses won’t fix your color blindness

Dude enjoying winter sports in sunglasses is happy.

Enlarge / EnChroma glasses
have always had both skeptics and true believers. Who’s right? It’s
complicated. (credit: EnChroma)

The much-touted EnChroma glasses don’t help colorblind users see
new colors; they merely let the colorblind see the same colors in a
different way, according to a new
published in Optics Express by scientists at Spain’s
University of Granada. The scientists
liken the effect
to the colored glasses often used by hunters
to increase the contrast in their surroundings so they can better
pick up on certain visual stimuli.

EnChroma makes glasses that are designed to help with a specific
form of color blindness, one in which a hybrid of red- and
green-detecting receptors confuse the differences between colors.
The receptors act by blocking out the wavelengths that the hybrids
are most sensitive to, but they don’t do anything for other forms
of color blindness.

So the new results don’t come as a surprise to University of
Washington color-vision expert Jay
, who has long been skeptical about what the glasses
actually accomplish. “You can’t add colors by taking away some
wavelengths [of light], which is all the glasses do,” he says.

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Source: FS – All – Science – News
Spanish scientists: EnChroma glasses won’t fix your color blindness