Illusions
Can you believe your eyes? You may have 20/20 vision, but as Prof. Shapiro shows you may not be seeing what is "really" there.

In part 3 of the five-part series, Prof. Shapiro shows us that the brain is challenged to process some stimuli from the eyes and sometimes "guesses" what you are seeing. Join him as he takes us through visual perception challenges like the "Curveball Illusion". Has he thrown you for a loop yet?