Do color blind glasses actually work? Here's what users say

While studies show that Color Blind glasses are usually ineffective, so users do report a small but noticeable difference in ...
Nature

Trichromatic color vision with only two spectrally distinct photopigments

Protanomaly is a common, X-linked abnormality of color vision. Like people with normal color vision, protanomalous observers are trichromatic, but their ability to discriminate colors in the red–green ...