They are light weight as advertised and most likely have some kind of coating on the lens. However, the blue light blocker does not work properly. The glasses actually reflect the computer screen back into the lens. I'm no expert, but this seems to shed MORE light on the matter. It also makes it harder to see what you're working on when you need to examine reflections. You have to deduct the stars because the glasses just don't do what they are intended for.
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