Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers

Great price to see if these fit into your health routine. Quality seems good and should last a while. Comfortable and fit over both of my glasses. The first night I used them I had 3 hours of REM sleep (double what I have normally). That has never happened in the 3+ years I've been tracking my sleep.

Review of Spectra479 Blue Blocking Fit-Over Glasses I’ve been using the Spectra479 blue blocking fit-over glasses and have been very impressed with their performance. The blocking effect is immediately noticeable—they truly cut down on blue light in a big way, making a huge difference in eye strain and sleep quality. If you're sensitive to blue light, these are a game-changer. The glasses are well made, sturdy, and feel like a quality product. I appreciate that they’re designed to fit over prescription glasses, but it’s worth noting that they don’t fit over every pair. I have two pairs of Rx glasses—these fit comfortably over one pair, but not over the other, which has a more oval shape. If your glasses are taller than approximately 42m (about 1.65 inches), you might have trouble getting a good fit. Overall, I’d definitely recommend them for anyone looking to reduce blue light exposure—just be sure to check the size of your frames first.

Despite suffering from advanced glaucoma and optic nerve damage due to a medical mistake, I find reasons to stay positive. I wear these incredibly comfortable glasses over my usual ones at night while watching TV, and they’ve become a game-changer—completely issue-free and worth every moment.

These work very well and fit over my glasses. My eyes are not as tired now when I am on the computer, phone, or watching TV.

You won’t win any beauty pageants or start new style trends wearing these, but they definitely block blue light and are fairly comfortable once you get used to them. The oddest part is just adjusting to how everything looks without blue light when you’re watching TV or using a screen. I’m still a little skeptical about how much blue light really messes with sleep, but these certainly aren’t making anyone sleep less. If you like to watch a screen before bed and want to see if blue light is part of your problem, they’re worth a try.

After purchasing another pair of fit-over, blue blocker glasses for much less money, I found they wouldn't fit over my prescription glasses - they weren't wide enough. For some reason, no one who sells these glasses on Amazon seems to think that's a relevant issue, so they publish the lens height, the lens width, and the EXTERNAL width of the frame, along with other dimensions - but they DON'T publish the internal width of the frame, which is the maximum width of prescription glasses that these can accommodate. Stating that a pair of glasses "will fit over most prescription glasses" is not useful. In this case, the seller responded quickly responded to my question, so I ordered these much more expensive glasses. So the seller gets full credit for being responsive. When the glasses arrived, I was pleased to find that they do fit over my (apparently) more than usually wide prescription glasses. The seller also gets credit for an accurate response, and the glasses get credit for fitting. These glasses do block blue light quite effectively, so I guess they deserve credit for that - but they have a number of drawbacks. As an aside, I have been a wearer of fit-over sunglasses for more than 20 years, so I have something to compare these glasses with. The ledge above the lens on these glasses, which rests on the top of prescription glasses, is not as deep as that on my sunglasses, and does not curve as much to wrap around my face. As a result, while the lenses block blue light effectively, a great deal of blue light comes in from above the lenses. The same thing happens at the sides of the glasses; the temples, while much wider than those of prescription glasses, are not as wide as those on fit-over sunglasses, so they don't block as much light coming in from the sides. As for the lenses themselves, they are effective at blocking blue light - maybe too effective. The orange lenses on these glasses are much darker than the yellow lenses on other products. Color perception is strongly affected - watching television takes some getting used to, but is moderately acceptable. Where I have greater difficulty is in using the computer. When working with a spreadsheet, any cells that use yellow highlighting simply disappear into the background - everything white on the screen becomes yellow, so it's no longer possible to identify the cells highlighted in yellow. My final nit-pick is with the overall darkening effect of the lenses. If I'm watching television in the living room, and get up to walk to the kitchen, I have to pass through a darkened hallway. The first time I did so wearing these glasses, I actually bumped into a wall. The same thing occurs if I'm working at the computer and want to go to another room - I have to pass through a darkened hallway. These glasses darken overall light perception enough to constitute a safety hazard. Overall, these glasses are well-made, fit me, and do what they say; and the seller is responsive. That sounds like it should be a five-star review. But while the lenses do what they're supposed to, it may be they do it too effectively on the one hand, and the frames manage to let light bypass the lenses. On top of that, these are double or triple the price of similar products. I'd like to give these a better review, but I just can't.

The block the blue light pretty well, I like that they fit over my glasses, so I can wear both in the evening, when my contacts are off.

This company makes some great products! I'm sorry.I'm so late for the review but i'm glad I waited because after more than five months , I can tell you that this product has only impressed me even more! My sleep. Is amazing when I remember to use these. I absolutely love the color at night.Though I advise anybody to be careful wearing them at night. They're so lightweight and they fit over my glasses which I love. I will be telling everyone!!

Glasses are solid, well packaged, will buy more of these

These cut out at least 90% of surrounding light. They sit at the same distance from the face as normal glasses; there are slight margins that are uncovered such as the lower outer edge but these don’t cause a problem. At the top edge of mine there’s 3mm of space above my iris (5mm if I have let them slide down) and 1 cm at the outer corners. I don’t think you could expect much more coverage without having a rubber-sealed-underwater-mask type set-up. Rooms can have either central overhead lights on, or side lamps. Ater popping these on about 2 hours before bed, I tend to go for side lamps if I’ll be there for 15 mins+ and main lights if there for 10 mins or less. The great thing is, if watching a screen with others, the brightness settings can be left as normal for them, while I still have the benefit of greatly reduced blue light. I haven’t found a problem in darkened hallways when there is a little light from another room … I can still see well enough, though I ensure any dark bags are either off the floor or tucked well to the side eg the large one that I use for online returns and my Husband’s work bag. Wouldn’t be without these, now.

Delivery took 10 days but refund is taking more than that. These glasses will fit only on half frame specs.

Great quality! Pretty light and very convenient to you. The difference between this pair and a different pair I used before this one is night and day. The Spectra479 glasses clearly block out blue light and it helps me when I want to start winding down while still using devices at the end of my workday.

These glasses are marketed as blocking 99.9%+ of blue light across 450–510 nm and as suitable for sleep and circadian protection. I tested them using controlled colour screens at full brightness with all software blue-light filters disabled, including pure blue, cyan, violet, green, and white. Observed results: Pure blue (~450 nm) is dimmed but still visible, not eliminated. Cyan (~480–500 nm) shifts toward green/yellow rather than being blocked. Green (~530 nm) remains largely unaffected. A white screen appears light yellow, not deep orange or red. This indicates moderate blue-light attenuation (~450–470 nm), not full suppression through 510 nm as advertised. Conclusion: These glasses function as general evening / screen-use blue-light reducers, not as true sleep-grade or circadian-protective glasses. They do not provide sufficient spectral blocking to reliably protect melatonin or sleep physiology. Price and value: Price paid: £54.90 Based on measured performance, a fair price would be £30–£45. At £54.90, they are overpriced for what they actually deliver. Anyone buying these specifically for sleep hygiene or “virtual darkness” should look elsewhere. Stronger lenses with deeper spectral cut-offs are required for that use case.