Tom=E1s =D3 h=C9ilidhe wrote:
> As I've already demonstrated, I'm no expert on colour-blindness, but
> from what I've read, "full colour blindness" is a progressive illness
> that leads to actual blindness, and it is indeed extremely rare.

That's only one form caused by a disease.  The genetic version (no cones or
no pigments in the cones) doesn't lead to blindness, but the person sees in
shades of gray only, like a black and white TV.


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