VPI General Forum

Fell for this trap once with a cheap pair from a beach vendor - dark tint made everything look moody, but my eyes still felt strained after an hour in the sun. That's when I learned that darkness and UV protection have nothing to do with each other. The only reliable way is to check for a UV400 label or a CE mark, which means the lenses block 99-100% of UVA and UVB rays up to 400 nanometers. Any legitimate retailer will have this clearly stated on the packaging or product page. You can also take them to an optician who has a UV meter - they'll test it in seconds. Another red flag is price; if it's under $20 and claims full protection, it's almost certainly just tinted plastic that dilates your pupils and lets more harmful rays in. For peace of mind, buying from authorized sources like https://luxglasshub.com/prada/ ensures you're getting certified lenses with proper documentation, not guesswork from a street stall. Your eyes don't regenerate, so it's worth verifying before you wear them regularly.