Great! I had LASIK over a year ago and have found that looking at all those LCD screens for a while can make my eyes get tired or dry. I use eye drops several times a day, but I read an article about how we blink 60% less when we look at all these screens: phones, computers, TVs, tablets - I look at them all day and noticed that my eyes became more tired. . I have one pair at the office and one at home. When I wear them I notice that my eye strain has been significantly reduced. Looking at the screens, you hardly notice any change, but the picture appears colder (in color). It's a small change, but enough to block the blue light that's eye-straining for all of us. The Revain Kindle Fire has Blue Shade, Apple has Night Shift, and Android has Twilight. It achieves this concept within a day. They act as readers (there's a magnifying version if you need that capability), and they're pretty sturdy and comfortable. The pouch they come in doubles as a cleaning cloth which is very handy.
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