Here are three fun experiments that help teach kids about vision. The first two experiments show kids how our eyes work together as a team. Two eyes really are better than one! The third experiment teaches kids about a funny thing that can happen when some receptors in our eyes get tired.
Two eyes give us more depth perception, which is the ability to judge how near or far objects are.
The receptors in our eyes that are sensitive to certain colors can get tired. When they don't work as usual, you may see an afterimage in colors that are different from the image you were looking at. An afterimage is when the eyes see something that isn't there.
Reviewed by: Eric H. Chudler, PhD
Date reviewed: August 2011
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