"We don’t see things as they are; we see things as we are."
This quote suggests that what we see depends as much on ourselves as it does on the world around us. Explore this link and see if you can figure out what they tell us about how we see.
Did you know, even blind people can learn to see again with... their tongue!
+ watch this video
Now, what is this test about?
Study Pickering, complete Biology: section 5.6 p 100 - 103
+read pickering
Can you do more?
+view here to see the world as a colorblind person would
+view here to experience impaired vision
+view here to see the world with old eyes

