News Health & Medicine

Monkeys get full color vision

Males with red-green colorblindness can distinguish the hues after gene therapy, study suggests

By Tina Hesman Saey

- More than 2 years ago

Two male squirrel monkeys now see the world in a whole new way — in full color.

TESTING TIME A colorblind male squirrel monkey named Dalton is pictured here taking a color vision test. Gene therapy gave Dalton a photoreceptor that detects red light and he can now pick out red dots from a gray background and distinguish red and green from other colors.