
I suffered half a year, recently I found it because my eyes hurt. I used to buy one from another seller for $45, figured the more expensive the better, used a blue light test card to test, didn't filter the blue light, then made a return and bought this. tested the blue light test card again, it can filter about 50% of blue light, i don't think there are any products that can block 100%, use it with my computer glasses, my eyes feel much better, i'm happy about it .

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