Deuteranomaly is a color blindness that causes green light photoreceptors to react to redder light. Red objects seem greener for patients with the condition, but it has been known for a while that blocking some of the light in the red color range can improve proper color perception. There are glasses that do this, a pair of which we reviewed, but they’re slightly bulky and people with color blindness often find that it’s not worth it to wear them. Now researchers…
