kanemochisan_102 asked: not because uv rays can't enter the lens since it's invisible, but is there another way to know? a polaroid sunglass is easily distinguished by looking it over the water surface, one can see more clearly what's beneath those glares. wearing one uv protected sunglass is really necessary since it protect the eyes from harm.
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One Response for "how can one tell if a sunglass is uv rays protected?"
You can’t really tell by looking at them, but when you are shopping for a pair, it should be stated on the label.
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