Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality

These glasses work well. They seem prone to fingerprints so I have to clean them daily but they're effective! I use them nightly for tv, phone use and reading. 🤓

You can so easily see how it really blocks out the blue/green light. Very happy with this great product. Thank you.

I wear em like everyday, I recommend it for people who use screens alot, and have relatively small to regular sized glasses. Very strong effect and they definitely fit over my glasses

It is rare and usually a lot pricier to block such a wide spectrum of sleep-disruptive light. So I found that impressive and bought two pairs. I also really like the shape of the fit-overs; they’re much more attractive than the abundant square ones. A few things to bear in mind:*The small lens built into the sides is not red but an extremely pale grey. This is suitable because the light that enters your eye frontally is what really matters. Generally side-glare, even if there is a lot of light, will not be sufficient to reflect into the eyes in a way that will disrupt hormones. The little grey windows allow a bit more light in for reading while still toning it down slightly to ensure you don’t get that reflection.*The glasses should be lighter weight and/or have a nice cushion. If you combine them with readers or prescription glasses, it’s going to get heavy after a while. Also, I feel like the weight loosened the hinge on my readers in the first night(!). Although glasses that only block blue light are of minimal effect for me, I do find myself rotating those ones in and out with these to give my nose a break, which is tremendous a shame.*Compared to some fit-overs their construction is not too overly wide and so is more suitable for a woman’s face. And even without my readers on, the design holds onto me far better than I anticipated.*Be sure that the glasses you wear underneath are clear without any computer-coating or light-blocking, or you may strain your eyes because of the dimness.* The biggest ongoing frustration with these glasses has to do with the lens material. It attracts grime and is nearly impossible to get completely clean, also the lenses readily pop out while cleaning. Both of these factors contrast unfavorably to my bon charge readers and to my regular readers, although I’d say that BluBlocker sunglasses also get very grimy and resist cleaning.*It was initially disconcerting that my blue light devices tended not to go neutral with these glasses on. Some looked as bright or brighter with the remaining light that came through as they did with glasses that just block blue light (Uvex Skyper or Swanwick). Other blue light devices looked purply-blue, whereas the blue light blockers left them greenish. I wondered if these lenses were merely dying everything red and not really blocking. But apart from the sellers reply to my question here on Amazon, I did several experiments: I have a blue led device that is quite bright and had it on in a closed cabinet in a closed room with no windows. Opening the cabinet multiple times with each pair of glasses on, it was clear that more total light was coming through with the glasses that block blue light only. Next I took a blue light detecting card and a blue light (such as come with some computer glasses to prove that they block some of the light), and I held the glasses right against the card with the light on top of the lens for ten seconds. The Uvex glasses left a purple mark briefly (indicating some light had gone through), but the Teravan did not. I also shone the blue light through each lens: It looked green and moderate on the Uvex and dim and orange on the Teravan. These experiments convinced me that the Teravan were in fact blocking more blue light, not less, and that the bluish and purplish lights are just a factor of what it looks like with less green and UV.

I heard a lot about eye protectors against blue and green light. I bought this brand based on reviews from other customers and I am quite satisfied with this purchase.The order came as scheduled, and the shades were enclosed in a sturdy case. The only draw back is the one size fits all that turned out to be too big for my face. So the shades are comfortable but tend to slide down my face, despite the fact that the are worn over reading glasses! Overall a good product at a right price.