h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

As a dichromatic protanope if you'd like any help putting together the article on colourblindess, I'm willing to help.

Thanks, Clive. I'm not really working on this at the moment, but will probably get back to it at some stage. What's a dichromatic protanope? Does this mean you are lacking one of the three colour sensors of "normal" people, or do you have two colour sensors in different places to the norm?

I'm missing the red-element from my vision leaving me just the blue and green, so reds can appear black, browns appear orange, purples appear grey. This is not universally always the case, and varies according to light, hue, saturation etc.

I don't think my colour sensors are different from the norm but that I have a missing channel in this case corresponding to magenta.

and hey no rush, just I was wandering about site, saw this was a topic you were working on and thought I'd offer you a hand if and when you come to put it all together.

I remember in my class in school there were about 30 boys, and two of them were colour blind. By coincidence, they sat next to each other.

They couldn't distinguish between green and brown. I don't know which sensor they were missing.