27 points
There are differing scales of deuteronopia (what red/green color blindness is called). The more overlap between the ranges your red and green cones’ wavelength reactivity, the worse the colorblindness. Mine is not super bad, just enough to be annoying sometimes.
1 point
Also, protonopia, further adding to things.
‘red/green’ means either you have difficulty seeing red, or maybe green. Then there is severity. I am evidently relatively severe protonopia. Like if you take a picture and just delete the red channel, I can’t really tell except if there’s some extremely pure red in it not mixed with anything else. Any hint of other colors in the mix will drown out any red perception.
