Blaulichtfilter-Brille: klares oder gelbes Glas?
Aktualisiert am LenBlu® Team
The most common question when buying blue light glasses is the lens colour: clear or yellow? The short answer: a clear lens filters part of the blue light and leaves colours as they are; a yellow one filters more but tints everything. Which suits you depends on what you want them for.
The three types of lens
| Lens | What it does | How things look | Best for |
|---|---|---|---|
| Clear | Filters part of the blue light | Natural colours; at certain angles, a faint bluish reflection on the lens | Everyday use: work, study, video calls, out and about |
| Yellow or amber | Filters quite a lot more blue light | Everything turns warm: whites look cream, blues look dull | Occasional use, mainly in the evening and at night |
| Orange or red | Blocks almost all blue light | The image is heavily altered | Only for the time before bed; not for work or driving |
What doesn't change with the colour
Whichever lens you choose, the scientific evidence on its effects on eye strain and sleep is limited. Filtering more blue light doesn't, on its own, mean a better result for you. We explain it plainly in do blue light glasses work?. That's why it makes more sense to choose based on how you'll use them.
When to choose a clear lens
- If you work with colour: design, photography, video, online shops. You need white to look white.
- If you're on video calls: a yellow lens shows on camera.
- If you want to wear them out and about too: they pass for regular glasses.
- If you want them for the whole day: you never need to take them off.
When yellow might make sense
- If you'll only wear them for a while in the evening, in front of the TV or your phone.
- If you don't mind colours changing.
- If you already have a clear pair for the day and want a different one for the evening.
Don't wear them to drive at night or for tasks where you need to tell colours apart properly.
How to tell if a clear lens really filters
- The reflection: tilt the glasses under a lamp. If you see a bluish or violet reflection on the surface, the lens has a coating.
- The product page: it should say explicitly that the lens has a blue light filter, not just "anti-reflective".
- The promises: be wary of anyone advertising a completely clear lens that blocks everything. A clear lens filters part of it; that's why it's clear.
With or without a prescription?
Lens colour has nothing to do with the prescription. You can get clear and yellow lenses, prescription and non-prescription. If your eyesight is fine or you wear contact lenses, you want non-prescription: more on that in non-prescription blue light glasses.
The LenBlu® lens
At LenBlu® we only make a clear lens: non-prescription, with a built-in blue light filter and no yellow tint. The frame is square, slim and made of TR90, in Clear and Matte Black at €34.99 each, or both in the Duo Pack for €49.99. Delivery in 8–15 business days, free from €39.99. They're all in blue light glasses.
Frequently asked questions
Do clear blue light glasses work the same as yellow ones?
They filter less blue light, in exchange for not changing colours. Neither has a proven effect on eye strain.
Why does my clear lens have a blue reflection?
It's the filter itself, reflecting part of the blue light. It's normal and only shows at certain angles.
Does a clear lens turn yellow over time?
It shouldn't if you look after it: water, mild soap and a microfibre cloth, and don't leave them in the sun in the car.
Can I use yellow lenses for work?
You can, but colours will look different. For work, a clear lens is usually more comfortable.
This article is for information only. It doesn't replace advice from an eye care professional.
