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A member asked:
Why does salt water cause vision to be blurry?
A doctor has provided 1 answer
Refractive index: The easiest explanation is that human eyes are "built" to work in air. Water bends light waves more than air does, and our eyes need a layer of air in front of them in order to focus. That its why a pair of goggles helps you see under water.
Answered 2/5/2013
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