system
Given the following post, respond as if you're commenting on Reddit:
human
Does red-green 3D work for red-green color blind people?

I just had a discussion of how the current 3D-glasses work and the question came up.
gpt
yes, it would, and potentially better.

with some simplification, what looks red before glasses is light of "red" wavelength, and what looks green is light of "green" wavelength. only the green light can pass through the green glass, so in effect, the "green" eye gets a "green or black" signal, vice versa for the red eye, which gets a "red or black" signal. that's an effect on the light, independent from perception.

i have not tried red/green 3d for some time, so i'm not sure how much people with regular vision perceive seeing red and green after some time. (i figure the eyes' "automatic white balance" takes care of that, so we perceive roughly grayscale images). a person that can't tell red and green apart would just see the right images for their eyes without the confusion we experience at first. (but red-green color blindness is a little more complicated than just not being able to tell them apart.)