When you open your eyes under water, why is everything blurry?

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Are your eyes just focusing on “thin water”?

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Anonymous 0 Comments

Because light bends differently underwater than it does in air.
This is to say that its refractive index is greater than air.
Your eyes evolved with lenses to focus light that travels through air. And therefore are not adapted to focus light travelling through water.
They aren’t able to focus the light properly so objects look blurry.

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