Re: who first discovered color blindness?

Of course, the first person to actually discover color blindness may be 
lost to history; however, the first major study of color blindness was
published in 1794 by John Dalton. In fact, color blindess is also called 
"Daltonism".

John Dalton is probably more famous for his key work on the atomic theory 
of matter - one of the most basic theories of modern chemistry, and for 
Dalton's Law of Partial Pressures. If you study chemistry, you will learn 
much about Dalton's early and key work. More information on John Dalton can 
be found at http://www.astro.vi
rginia.edu/~eww6n/bios/Dalton.html , or you 
can do a web search on John Dalton (or look him up in any encyclopedia, or 
even in the index of almost any chemistry book).

In case you wondered....yes, John Dalton was color blind.