HOW COLOR VISION WORKS

1. At the back of your eye, the retina has millions of cone cells. There are three kinds: one likes red light, one green and one blue.
2. Your brain compares how much each kind of cone sees. That is how you can tell millions of colors from just three!
3. Screens use the same trick: every pixel is a tiny red, green and blue light. Try it in the Light mixer.
4. In color blindness (also called color vision deficiency), one kind of cone works differently or is missing. Red-weak (protan) and green-weak (deutan) are the most common. They happen in about 1 in 12 boys and 1 in 200 girls, because the genes are on the X chromosome.
5. Most color-blind people see lots of colors, but some pairs look the same, like red and green, or purple and blue.
6. Sam is our green-weak friend. In Sam’s eyes, guess which colors Sam can tell apart.

GREAT WORK!