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<h1>
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<span>Optical Illusions</span>
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<p>An optical illusion is something that plays tricks on your vision. Optical illusions teach us how our eyes and brain work together to see. You live in a three-dimensional world, so your brain gets clues about depth, shading, lighting, and position to help you interpret what you see. But when you look at a two-dimensional image, your brain can be fooled because it doesn't get the same clues. Take a look at the optical illusions below. Can you figure them out?</p>
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<p>This video features Dr. Matt McMahon describing optical illusions and how they play tricks on our eyes. Created on April 30, 2013.</p>
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<p class="views-element-container c-last-updated" id="block-views-block-nei-last-updated-block-1"><strong>Last updated:</strong> June 10, 2022</p>
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