How do I still see all of the blue colors when wearing my reading glasses with a blue blocking coating on them? I can see the solid blue reflection from my computer screen on my lenses when looking at myself through my phone camera. So the filter seems to be working but the colors I see don’t seem to change with or without the glasses.
In: Technology
Blue-blocking glasses don’t block all blue light, just a large portion of it.
After looking through the glasses for a while, your brain will naturally adjust to the new color conditions by white balancing. Viewing a white color through the glasses initially looks yellow but soon, your brain adjusts to the lowered blue levels by increasing blue light signal and it’ll look more white. If you take off the glasses, everything will have an increased blue tint for a short period of time as your brain adjusts back. The same occurs when wearing blue-blocking ski/snowboard goggles or sunglasses.
Cameras perform the same type of white balancing since the color of an object depends on the lighting condition. A white piece of paper in incandescent lighting looks yellow but the same paper looks blue under florescent lighting. White balance adjusts the colors so that paper looks white in both conditions.
A lot of the blue blocking glasses you buy are not genuine, I’ve even seen them be sold with a card that is supposed to be used as proof that they are working – but the card was faked
I’m not sure what you’re asking or what the utility of them would be – for your screens that emit blue light you can use software that alters the colours to reduce the blue (but unsure if this does anything to the backlight) and for reading books I would have thought that using lightbulbs with a lower colour temperature would be enough to prevent issues, if you are reading outside in sunlight sunglasses may be a good idea. The science behind the whole blue light thing is faulty at best anyway
edit: I think this was the video I saw with the card [https://youtu.be/_6jDSozxaqk](https://youtu.be/_6jDSozxaqk)
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