Your eyes let you see the world around you. They take in light and send messages to your brain, which turns those messages into pictures of everything you look at.
Look at eyes in a mirror and identify parts children can see (pupil, iris, eyelid, eyelashes). Play "I Spy" to practice using sight. Compare what you can see in bright light versus dim light and notice how your pupils change size.
Children often think eyes work like cameras that simply take pictures. They do not understand that the brain plays a huge role in turning light into what we "see." Some children think people who wear glasses cannot see at all without them.
Your eyes are two small, round organs that sit in your head, protected by the bones of your skull. When you look in a mirror, you can see several parts of your eye. The colored part is called the iris — it might be brown, blue, green, or hazel. Right in the center of the iris is a black dot called the pupil. The pupil is actually a hole that lets light come into your eye.
Light bounces off everything around you — the trees, your toys, your friend's face — and some of that light enters through your pupils. Inside your eye, that light hits a special surface at the back, and tiny signals get sent along a nerve to your brain. Your brain is the one that actually figures out what you are looking at. So seeing is really a team effort between your eyes and your brain.
Your eyes have built-in protection. Your eyelids close quickly when something comes too close — this is called blinking, and you do it without even thinking. Your eyelashes catch tiny bits of dust before they can reach your eyes. Tears are not just for crying — your eyes make a thin layer of tears all the time to keep them clean and wet. If you notice your eyes feel dry or tired after looking at a screen for a long time, that is your body telling you to blink more and give your eyes a rest.
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