How to tell if a pair of sunglasses is really good?
I was wondering how do I find out whether a pair of sunglasses is really good, and whether it protects those UVA, UVB, etc ...?Everyone talks to buy optical known, but the question is this, is even buying from a viewpoint known as to whether he is really good and will protect my eyes??As I test it??in the laboratory??which lab?
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