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I bought sunglasses in China that claims to have UV400 protection. I'd like to test this as my eyes' health is on the line :)

Is there any way to check the maximum UV amount these glasses can protect me against ?

Thanks, .x

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    I don't see how this is a medical question. I doubt if any physician knows how to test sunglasses for UV protection, but optical engineers and physicists probably do. I think you'd have better luck asking this in engineering or physics. – Carey Gregory Jun 15 '17 at 22:00
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    I'm voting to close this question as off-topic because it is not a medical question. – Atl LED Jun 21 '17 at 15:22
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    @CareyGregory I'm interested in the answer, so I posted it on the Physics SE: physics.stackexchange.com/questions/369916/… – RockPaperLz- Mask it or Casket Nov 20 '17 at 18:55

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