Discover Your Eye's Surprising Secret: The Mysterious Blind Spot

We each have a blind spot in the center of our eye, where the optic nerve is located, and it's bigger than we might think. It can be easily "seen" by doing a simple self-experiment with a pen and a napkin. Simply draw a cross and a dot on the napkin, hold it about an arm's length away from your face, and close one eye. Move the napkin closer to your face until the dot disappears behind the cross. The dot is actually in the blind spot of your eye, showing how our brains fill in the missing information to create a seamless image.