bmattock
Veteran
http://www.wired.com/wiredscience/2009/09/colortherapy/
After receiving injections of genes that produce color-detecting proteins, two color-blind monkeys have seen red and green for the first time.
Except in its extreme forms, color blindness isn’t a debilitating condition, but it’s a convenient stand-in for other types of blindness that might be treated with gene therapy. The monkey success raises the possibility of reversing those diseases, in a manner that most scientists considered impossible.