
After researching, experimenting and presenting data on the effect of blue light on human circadian rhythm and sleep quality, I purchased it to improve my condition and health. I also bought one for each of my children as we do a lot of computer work. I was a bit skeptical because of the price but decided based on good reviews and photos from real purchases and wanted to make sure the lenses would actually block and also not have any distortion from cheap plastic lenses compared to polycarbonate lenses (at this price point I don't expect glass lenses). ). When opening the box, the blue light test light/card was not there. So I used one from another purchase. The glasses were light and the sunglasses of the same quality as Target/Claire. Sweet. They are smaller than I expected from other photos. I used them that day at work on my desktop, I felt the difference immediately (I took them off and put them back on to check the visual difference) and since it was still daylight I could tell when I looked up at the sky, there was an amber hue cutting through the blue. The light frame makes me forget they're on me, the last 3 days I've been using them for work/study, I didn't feel tired. My kids have noticed the same (less sleepy reading their school e-books). Great performance and great looks!

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