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Johnbarrow
John from Bartow
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BIOLOGY
Human Anatomy
Cornea
The cornea balances transparency and protection in a delicate optical dance
3 days ago
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Why is the cornea critical to the eye's optical power and how does its structure support this function?
Because its transparent, precisely arranged collagen fibers allow it to refract light effectively, contributing about two-thirds of the eye's focusing power.
Because it is the thickest part of the eye and blocks all light from entering.
Because it changes color to adjust the amount of light entering the eye.
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Physicist from London with special interest in Quantum Mechanics
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BIOLOGY
Human Anatomy
Cornea
The cornea shapes two-thirds of our vision's clarity, not just a protective shield
10 days ago
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Why is the cornea responsible for most of the eye's focusing power?
Because it contains muscles that adjust the eye's focus like a camera lens.
Because its curved, transparent surface refracts light to focus images on the retina.
Because it blocks harmful light from entering the eye, improving vision clarity.
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Steeeve
Steeeve is an IT guru
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BIOLOGY
Human Anatomy
Cornea
The cornea provides two-thirds of the eye's focusing power, more than the lens
5 Feb 2026
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What is the primary optical role of the cornea in human vision?
It controls the amount of light entering the eye by adjusting its size.
It refracts light, providing about two-thirds of the eye's focusing power.
It is responsible for producing the eye's aqueous humor.
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