Blue light from computer screens and smartphones stimulates eyes and can cause sleep problems — but a new analysis finds blue light blocking glasses may not be much help.
This is similar to the claim that using a UV-filter will prevent fading of artworks. While high energy invisible ultraviolet light can be damaging, and visible light in the blue part of the spectrum can also cause damage, and normal clear acrylic is already a fairly good UV filter.
If you really want to stop the effects of blue light, you would need a strong yellow filter. If you can see blue through the glasses, they’re not blocking blue light.
Edit: lowering light levels does more than filtering anyway.
This is similar to the claim that using a UV-filter will prevent fading of artworks. While high energy invisible ultraviolet light can be damaging, and visible light in the blue part of the spectrum can also cause damage, and normal clear acrylic is already a fairly good UV filter.
If you really want to stop the effects of blue light, you would need a strong yellow filter. If you can see blue through the glasses, they’re not blocking blue light.
Edit: lowering light levels does more than filtering anyway.