To be clear these glasses are blue shrink glasses. They are not blue blockers. They reduce the blue, maybe by 50 or 60 percent, but that's not enough to get the full benefit of wearing glasses like this. Any blue light at night disrupts sleep hormones and other biological functions, period. Some people are used to seeing all colors on their phones or TVs, others need it for work, which is a valid exception, although you can start working on your computer during the day and avoid artificial light at night, usually with the exception of Red or candlelight/fire. Anyway, I love the style of these glasses. If they could get them to block all blue and only let a small amount of green through, I'd recommend them. I regret buying 3 pairs for my family because they just don't give them the protection they need and want. These are good "beginner glasses" or "driving glasses" especially if you have poor vision, but they are NOT for people who want to optimize their health by using blue blockers at maximum efficiency. If you want this, get dark amber or red glasses. These aren't blue blockers for you if you're trying to reverse a chronic illness and improve your sleep. You need more efficient glasses like Spectrum 479 or Ra-Optik. Perhaps there are other cheap and effective remedies here at Revain.
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