Visual Encyclopedia

Human eye

The human eye is an organ which reacts to light and pressure. As a sense organ, the mammalian eye allows vision. Human eyes help to provide a three dimensional, moving image, normally coloured in daylight. Rod and cone cells in the retina allow conscious light perception and vision including color differentiation and the perception of depth. The human eye can differentiate between about 10 million colors and is possibly capable of detecting a single photon.

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Extreme Close Up of a Human Eye

by Suren Manvelyan

Contributed by Kelsey Stewart

No need for colored contacts anymore, we have graduated to change our eye pigment permanently through surgery. View how they do it! Video may be too graphic for some. I probably wouldn't get this done on myself.

Contributed by Alyssa Green

The human eye is remarkable, it gives you the ability to see. We rely on our eyesight for almost everything we do. This video shows you how the eye works and how it adjusts in different situations. There are many different parts of it that work together in order for you to see.

Contributed by Aby Rodriguez

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