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The sclera is the outer covering of the eyeball. It is the part that is visible as the "white of the eye." The sclera is white because it is made of collagen, which is a white protein that comprises most of the body's connective tissues.

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9y ago
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1mo ago

The sclera is white because it contains a dense network of collagen fibers that give it strength and structure. This collagen network also scatters and reflects light, giving the appearance of whiteness. Additionally, the white color helps to protect the delicate internal structures of the eye by reflecting excess light away.

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Q: Why is the sclera white?
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