4 Eye Tests That Look Like Magic

Seeing is believing.

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There are lots of very cool, very easy experiments you can do to learn more about your eyes. Here are a few of our favorites.

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1. Find Your Blind Spot

2. See After-Images

Your eyes have three types of color receptors: red, green, and blue. After-images appear when you stare at a particular color for too long and those receptors get tired. So stare at the white dot at the center of this image without blinking.

3. See Your Veins (Yes, Really)

4. Find Your Dominant Eye