Why Do We Blink Without Thinking About It?

We blink to keep our eyes wet and happy. When we're busy looking at something, like a toy or a cookie, our brain sends a little message to our eye to close it quickly for just a second, that's a blink! It helps the tears on our eyes spread out so we can see clearly again.

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Examples

You’re eating ice cream and your eyes close for a second, that’s a blink!
You’re playing with a toy, and suddenly both eyes shut quickly, that's another blink!
Your friend is telling you a funny story, but you don't notice your eyes blinking a lot, that's how automatic it is!

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Categories: Health · eyes,nervous system,reflexes