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There are two lots of fluid in the eye.

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Your eyes are very beautiful and also very clever, because all the different parts work together to help you see!

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These are a circle of tiny muscles around the lens. They change the shape of the lens by squeezing and relaxing. They squeeze (making the lens fat) to look at nearby objects, and relax (making the lens thinner) for far away objects.

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This is a thicker jelly-like liquid which fills the larger part of the eyeball and keeps it in shape. (Vitreous means glassy, because the vitreous humour is very clear, so that light can pass through it).

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Aqueous means water, and humour means fluid.  This watery stuff fills the front of the eyeball around the lens.

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This is the lining on the inside of your eyelid and the outside of the front of your eye (except for the special skin of the cornea). You can see some tiny blood vessels on the conjunctiva over your eye. If your eyes get sore, these blood vessels get bigger and your eye looks red.

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How the Eye Works Animation - How Do We See Video - Nearsighted & Farsighted Human Eye Anatomy

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Watch this video for more information

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Human Eye | #aumsum #kids #science #education #children

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The electrical messages from the retina travel along the optic nerve to your brain. It's a bit like the cable that carries all the TV pictures from your aerial to your TV so that you can see the programs. The great thing is that our eyes take these 'movies' all the time and we don't need any film or camera.

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This is a bit of your retina which is not sensitive to light because there are no rods or cones there. It is the spot where the optic nerve is joined on to the retina

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This is like a movie screen which shows the picture you are seeing - upside down, remember? The retina has two lots of cells called 'rods' and 'cones' (because that is what they look like.) Rods can 'see' black and white.  Cones can 'see' colours. They turn the picture into an electrical message for the brain. Sometimes people don't see all the colours - look at our topic 'Colour blindness' to find out more.

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The lens focuses light onto the retina. It changes shape to make sure that the 'picture' on the retina is as clear as possible.

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the eye anatomey

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This is the hole in the coloured iris. It lets light into your eye.  It gets very small in bright light, and bigger in dull light.

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The iris controls the amount of light that enters the eye. The iris is the coloured part of your eye.

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This is the tough skin which covers the outside of the eyeball (except for the see-through cornea). We call it the 'white' of the eye.

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below:

The lens focuses light through the vitreous humor, a clear gel-like substance that fills the back of the eye and supports the retina. The retina receives the image that the cornea focuses through the eye's internal lens and transforms this image into electrical impulses that are carried by the optic nerve to the brain