This is primarily a "Night Mode" lens. This will give all blue light a yellow tint, and it'll make your screen look the same if you're on a "night shift" or something. I had no issues with the frames being too flimsy (even the ads say they're flexible) and they were easy to bend around my ears to keep them from falling out of my face. They work because they're just a yellow filter in the lens. I'd like a blue light chart to see if they really work because I just don't know at the moment. Although they are pretty cute.
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