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Human eye

Adapted from Wikipedia · Explorer experience

A colorful 3D illustration showing the parts of the human eye, including the cornea, iris, lens, retina, and choroid.

The Amazing Human Eye

Your eyes are like special windows that help you see the whole world! They let you enjoy colorful pictures, read stories, and watch fun games. Without eyes, life would look very different.

How Your Eyes Work

Your eyes are round and sit on either side of your face. They are protected by your skull. Light first enters through the clear front part called the cornea—the clear part of the eye. Then it goes through a small opening called the pupil. The colored part around the pupil is the iris—the coloured part of the eye, and it controls how much light enters.

After the light passes through the pupil, it goes through a tiny lens inside the eye called the crystalline lens. This lens focuses the light onto a special layer at the back of the eye called the retina. The retina sends messages to your brain through the optic nerve. This is how you see!

Seeing Colors and Shapes

Inside the retina, there are special cells. Some cells, called rods, help you see shapes and movement even in dim light. Others, called cones, need brighter light and help you see colors and fine details. Together, they let you experience the world in full color and detail.

Eyes Help You in Many Ways

Your eyes help you see almost everywhere around you when you use both together. They can also see very faint lights, like stars at night, and very bright lights, like the sun. This helps you see in many different places and times.

When you look at something close, your eyes change to see it clearly. They move together, your pupils get smaller, and the lens inside your eyes changes shape. All these actions help you see things near and far!

Images

Diagram showing the parts of the human eye and how it focuses light.
An educational illustration showing the anatomy of the human eye and its surrounding muscles and nerves.
A close-up view of a human eye showing the iris and pupil, helpful for learning about eye anatomy.
Close-up photos showing how our pupils get bigger in dim light and smaller in bright light.
An animation showing how the pupil of the eye can change size by controlling the iris muscles.
A detailed close-up of a healthy human eye's interior, showing normal structures like the optic disk and blood vessels.
A close-up photograph of a human iris, showcasing the unique patterns and color of the eye.
A detailed scan showing the inner structure of a human eye, helping us learn about how our eyes work.
Anatomical drawing showing detailed structures of the human eye from a classic medical textbook.
An autostereogram tutorial image designed to help train eye convergence.

Related articles

Face
Cornea
Pupil
Iris (anatomy)
Lens (anatomy)
Retina

This article is a child-friendly adaptation of the Wikipedia article on Human eye, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.