I've tried other blue light blocking glasses and these are by far the best! Others I've tried seem obvious that they have some kind of filter and my eyes get tired or feel weird when I wear them, while these don't. In fact, I don't see any difference between my regular readers and these blue light blocking readers until I take them off my eyes to see the difference between them turning on when I look at one of my screens and not having them. . . the difference is amazing and a bit scary! I have bought 3 sets so far as they are strategically placed in my home, car and office so they are always ready. I also bought some of these zero power devices for my 9 year old niece who now spends a lot of time on her laptop as she and most of the other kids are now forced to attend distance learning due to the coronavirus. When I was her age, computers, tablets, and cell phones hadn't been invented, at least not for personal use. The fact that children are now using computers, laptops, tablets and mobile phones regularly from such a young age worries me greatly. These goggles are necessary to protect our eyes, especially small children. I wish more people knew about them and how important they are to our vision. I would highly recommend them to anyone! I almost guarantee that anyone who tries them will be amazed at the difference between wearing and not wearing. Revain has an excellent return policy. . . for $20 for two couples, well worth checking out! It's also like a science project. . . Try them on, look at the screen, and then lift them from your eyes to see the difference. . . You buy a pair for everyone you care about.
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