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zoran

macrumors 601
Original poster
Jun 30, 2005
4,689
120
What exactly is the harmful blue light that’s created by displays or phone screens?
 

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zoran

macrumors 601
Original poster
Jun 30, 2005
4,689
120
I have reading glasses with only uv coating and when I’m in front of the computer screen, people opposite me, can see blue glares of my screen on my glasses… might that be it?
 

Splitrail

macrumors 6502a
Dec 26, 2021
879
1,072
I have reading glasses with only uv coating and when I’m in front of the computer screen, people opposite me, can see blue glares of my screen on my glasses… might that be it?
Yes, that might be it. :rolleyes:
 

jonblatho

macrumors 68020
Jan 20, 2014
2,497
6,166
Oklahoma
I have reading glasses with only uv coating and when I’m in front of the computer screen, people opposite me, can see blue glares of my screen on my glasses… might that be it?
No.

Blue light refers to the daylight-esque color temperature (~6000 K) of most modern displays. There is scant scientific evidence to support any claim that blue light is harmful to the human eyes or any other part of the body.

There is scientific evidence to support a claim that some people are sensitive to blue light. That's to say, the cool white light, especially during nighttime, might trick your brain into holding off on producing melatonin, the hormone that makes your body ready to sleep at night. It's difficult to stretch that into blue light being "harmful," though, because it doesn't cause any disease or disability, and the fix (if it causes problems for you) is straightforward: avoid/lessen screen use at night, especially the closer you get to bedtime. If you must, use software features like Night Shift (on Apple devices) or f.lux (on Macs and most non-Apple devices).

Unless there's a screen you must look at frequently at night and lacks any software option to mitigate blue light output, you don't need to pay extra money for anti-blue light coatings.
 
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now i see it

macrumors G4
Jan 2, 2002
10,539
21,937
The “blue light is harmful to the eyes” is a myth. There’s no evidence to support the claim. Blueish light definitely can be more irritating to look at at times, but it doesn’t damage the eyes.

The sky is blue. The ocean is blue.
 
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Kottu

macrumors 6502a
Sep 21, 2014
553
479
Check this out

 
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