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Chemists discover how blue light speeds blindness

phys.org

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Re: Chemists discover how blue light speeds blindness

#51

Post by red75prime »

b_b wrote: post #4

For many of us whose use of these blue-light emitting computer and phone screens is necessary, what can we do about it?

Judging by the relative light intensities of daylight and computer screen light, I would say it will be sufficient to close your eyes for 6 minutes when you are outside on a sunny day to offset 10 hours of computer use.

Maybe dark adaptation can change that, but I haven't found anything about that upon quick unprofessional examination of [0].

[0]: http://twin.sci-hub.tw/6979/4112e16f7195f7f33cd3e861c6345df0...

Re: Chemists discover how blue light speeds blindness

#52

Post by mywacaday »

rory096 wrote: post #43
Ntrails wrote: post #36

Earlier quoted context omitted.

My phone (unlike my PC, or a TV) is smart, and thus dynamically alters brightness based on ambient light. It's pretty cool and certainly mitigaets the above somewhat

At least on my phone (LG G5), the lowest brightness setting is still incredibly bright in an otherwise dark room. I use Twilight[0] to dim it further, though unfortunately Google changed Android so it can't affect the soft buttons. (Which is fine for almost all apps because the soft button bar is black, but of course Chrome changes it to white with no way to fix it.) [0] https://twilight.urbandroid.org

Thanks for prompting me to go back and check the settings on the Darker(https://play.google.com/store/apps/details?id=com.mlhg.scree...) looks like it now dims the soft navigation buttons

Re: Chemists discover how blue light speeds blindness

#53

Post by ectospheno »

gregcrv wrote: post #34

"to wear sunglasses that can filter both UV and blue light" But isn't this bad with other consequences? I thought the lack of blue/violet light was the cause of myopia? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233810/

VSP basically owns TechShield Blue. Other manufacturers have competing products but they are all pretty horrible.

The cynic in me wonders if the researchers have any ties to VSP.

Re: Chemists discover how blue light speeds blindness

#55

Post by doh »

rory096 wrote: post #43
Ntrails wrote: post #36

Earlier quoted context omitted.

My phone (unlike my PC, or a TV) is smart, and thus dynamically alters brightness based on ambient light. It's pretty cool and certainly mitigaets the above somewhat

At least on my phone (LG G5), the lowest brightness setting is still incredibly bright in an otherwise dark room. I use Twilight[0] to dim it further, though unfortunately Google changed Android so it can't affect the soft buttons. (Which is fine for almost all apps because the soft button bar is black, but of course Chrome changes it to white with no way to fix it.) [0] https://twilight.urbandroid.org

iOS is the same. Even on the warmest setting and lowest brightness it's still very bright. Unfortunately, there is no app to do anything about it like there is on Android.

Re: Chemists discover how blue light speeds blindness

#57

Post by gambiting »

rconti wrote: post #46
gambiting wrote: post #27

Earlier quoted context omitted.

So I used to have glasses with a blue blocker filter on them - I absolutely hated every second of wearing them. Literally everything appeared yellow through them - my screens, sheets of paper, even snow looked like it had been peed on - awful. I mean, it's certainly not surprising - they did block blue light after all. But I wore them for 3 months and then marched back to the optician to have them replaced with norma…

My new eyeglasses have a coating that reflect blue light. They absolutely do NOT shift the color spectrum. You can't tell the coating is there. Perhaps it's newer or different tech. Look into it.

I just don't understand how that could possibly work - it doesn't matter if the glasses absorb or reflect blue light - as long as it doesn't reach your eyes, anything that is normally white will look yellow, as you're not seeing the blue component. You can't filter/reflect blue light and still see it.

Re: Chemists discover how blue light speeds blindness

#58

Post by Raphmedia »

shittyadmin wrote: post #30
kjullien wrote: post #8

Earlier quoted context omitted.

Use f.lux or an equivalent (most OS have their own implementation by now) that filters out the blue light at software/rendering level, it's not perfect but you do instantly feel the comfort it brings to your eyes. Been using f.lux for over 10 years and it also helps alot with going to sleep at night. When it's off your eyes/brain thinks that they are in daytime / broad daylight, when it's on I fall asleep 2 or 3 time…

The biggest problem I have with it is that everything looks so much worse that I just wind up turning it off all the time. Is this so seriously a threat to vision that it's worth it? I don't have the sleeping issues with screens some people seem to report, so I wasn't really willing to commit to it over that.

> The biggest problem I have with it is that everything looks so much worse that I just wind up turning it off all the time.

Change the settings. What you should do is take a sheet of paper and put it next to your screen. Then match your screen's white to the sheet. It's only a bit less blue. There's no need to set everything dark orange.

Re: Chemists discover how blue light speeds blindness

#59

Post by Eochei5h »

gumby wrote: post #38

Many of the comments here are about displays, but what about the LEDs sold as replacement for incandescent and halogen bulbs?

Check the spec sheet of the bulbs, specifically the color temperature in kelvin. Ignore the "warm white" and similar marketing terms, they are too fuzzy.

A LED with low color temperature and high CRI should have pretty much the same spectrum as incandescent. If you want really low temperatures look for some retro filament style LED lights.

https://en.wikipedia.org/wiki/Color_temperature#Categorizing...

Re: Chemists discover how blue light speeds blindness

#60

Post by [deleted] »

swebs wrote: post #25
kjullien wrote: post #8

Earlier quoted context omitted.

Use f.lux or an equivalent (most OS have their own implementation by now) that filters out the blue light at software/rendering level, it's not perfect but you do instantly feel the comfort it brings to your eyes. Been using f.lux for over 10 years and it also helps alot with going to sleep at night. When it's off your eyes/brain thinks that they are in daytime / broad daylight, when it's on I fall asleep 2 or 3 time…

The benefit of software such as f.lux and Gnome Nightlight is that they turn themselves on at night and off in the morning. It seems like the OP wants to remove blue light at all times, in which case should be handled through your monitor settings. A software solution would be unnecessary.

[deleted]
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