Reviewed by Michael Smith on March 01, 2016

Sources

Cleveland Clinic: “Take a Tour of the Eye;” AllAboutVision.com: “Human Eye Anatomy: Parts of the Eye.”

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Video Transcript

The colored part of your eyes, called the iris, may get all the attention. But it has a big job, controlling how much light comes into your eye by changing the size of your pupil.

Behind the iris, light passes through the lens and into a clear gel called the vitreous. Those floating specs that you see sometimes, they're usually swimming in this eyeball jelly.

All these parts have one main goal, to focus light on the back layer of the eye, called the retina. It has special cells that change light into electrical signals, sending them through the optic disk, to the optic nerve, and on to your brain.