Imagine a tiny, flexible curtain that can cover your eye, like a soft shield. That’s your third eyelid, and it helps protect your eyes from dust, bright light, or even tears when you’re crying. It works automatically, so you don’t have to think about it at all.
Examples
- Your third eyelid might come out when you cry a lot.
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See also
- How Do Birds Migrate So Far?
- What Causes Hiccups?
- How Can a Single Seed Grow into a Tree?
- Why Do People Have Different Shapes of Faces?
- Why Do We Blink?
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Categories: Biology · eye anatomy,human biology,eyelid function