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I am a typical old guy who has had cataract surgery and needs to use reading glasses. I usually read for an hour or so every night, and while I have not found that my Kindle Paperwhite ever created a problem, I decided to play it safe and use 'blue-blocker' readers that have a faint amber/yellow tint. Found them on line - something like three pair for $15 which is less that readers at the local pharmacy. One pair broke about two weeks after I got them, but the others are still good after more than a year.
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