
First of all, these glasses block blue light very well. I have no complaints about it, but it looks like someone left a few screws loose at the factory. I say this because the lens popped out a month after I bought it. The first time was nothing special; I just picked it up and tried to put it back together. However, the second time I couldn't find a lens that would save my life. I had to return them and deal with a few days of migraines.

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