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I believe that the method of looking at a bright light is not fully reliable: https://news.ycombinator.com/item?id=15006250 https://news.ycombinator.com/item?id
by hyperpape 9y ago
I believe that the method of looking at a bright light is not fully reliable: https://news.ycombinator.com/item?id=15006250 https://news.ycombinator.com/item?id=15006250. I would love to be told I am wrong, since I have four pairs that pass this test without a problem, and I wish I could trust them.
- burkaman 9y agoIt definitely isn't, it's just a good quick check. I don't think there's any easy way of testing UV protection at home.