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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

#191

Post by mafuyu »

justinc8687 wrote: post #187
mafuyu wrote: post #110

Earlier quoted context omitted.

Sure, it's not the most exciting project, but I might do a short writeup when I'm done. I originally purchased these nice LED strip bars with enclosure in blue[0], but after reading this site by the manufacturers of a commercial green therapy light[1], I was convinced to switch to turquoise/cyan. Turquoise isn't that popular so I wasn't able to find any strips/bars, and I got these individual 3W bead LED modules inst…

I would be very interested to see a write up of what you are doing here as I have a similar problem. Any chance you could share one if you create one? Email in my profile.

Yep, will do!

Re: Chemists discover how blue light speeds blindness

#192

Post by Raphmedia »

shittyadmin wrote: post #111
Raphmedia wrote: post #58

Earlier quoted context omitted.

> 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.

Okay, but that's a trade-off, you're still getting a fair amount of blue light through in that case. How much less blue light do you want? What's optimal for minimizing eye damage if that's a significant risk?

You don't want to eliminate all blue from your life. Decreasing it is good enough. What's the point of making your computer screen red if the minute you step outside in the sun you lose any benefit?

Re: Chemists discover how blue light speeds blindness

#193

Post by ChikkaChiChi »

Don't want any blue light from your devices at night?

- AMOLED Android device with a custom kernel that supports color profiles set to fire only the red pixels.

- Get transparent red film from Amazon and cover your Kindle screen.

- Wear orange safety glasses at night to dramatically reduce all blue light.

- Bonus difficulty: Wear red laser goggles. Do not attempt to drive!

Re: Chemists discover how blue light speeds blindness

#194

Post by drivers99 »

alain_gilbert wrote: post #186
chroem- wrote: post #155

It's more than a little amusing to see this at the top of HN only a few days after getting attacked for posting my personal experience with blue light and retinal degeneration.

You should post the link. It could be fun to compare the comments !

chroem-'s comment: https://news.ycombinator.com/item?id=17634720

Full thread: https://news.ycombinator.com/item?id=17634316

Re: Chemists discover how blue light speeds blindness

#195

Post by asdkhadsj »

lphnull wrote: post #174
asdkhadsj wrote: post #49

Earlier quoted context omitted.

If it is the delay in dilation that causes the damage, I imagine it's exacerbated by constantly changing dilation as well. Ie, if I'm staring at my phone in the dark, I rarely keep focus on it. I often glance to the left or w/e, thus causing the screen to appear too bright again. Same for laptop-ing in the dark. I often find myself looking at keys, or thinking off in the distance, or w/e.

serious question: Why do people like to do work or leisure in pitch black rooms? Don't you feel clumsy, sleepy and uncomfortable when everything is dark? How can anybody go more than 10 minutes without needing to use vision to interact with their surrounding environment? I personally can't have the lights off even if I'm watching a movie. Maybe because I was raised without TV, I can't sit still for more than 20 minut…

> serious question: Why do people like to do work or leisure in pitch black rooms?

I prefer low light, not pitch black. Generally speaking I want my monitor to be the main focus. Same for TV; if I care about the viewing experience I dim the lights. I might even prefer pitch black honestly, but due to the reasons being discussed, the contrast is just too great.

> Don't you feel clumsy, sleepy and uncomfortable when everything is dark?

Nope

> How can anybody go more than 10 minutes without needing to use vision to interact with their surrounding environment?

Not sure, tbh. I imagine it has to do with not wanting to interact with the environment most of the time. Ie, what am I going to do with my banister? It's just sitting there.. why do I need to interact with it? Most of my house is the same way. If I'm doing X, rarely do I need to interact with the rest of the house or room.

Does it bother you that there are things behind your head that you can't see?

Re: Chemists discover how blue light speeds blindness

#196

Post by [deleted] »

dsr_ wrote: post #177
_nkoa wrote: post #32

Earlier quoted context omitted.

Because of the way your eyes work. If it is bright, your pupil will be shrunk, to not be blinded by the luminosity. When it is dark, your pupil will be opened wide up. It is this principle that camera apertures are based on. Now if you have your pupil wide open in a completely dark environment and put a 100% brightness screen at ~10cm of your eyes, what do you expect will happen ? Our eyes are made for nature, that m…

... but I don't put a 100% brightness screen in front of my eyes at night. Do people really do that? Don't they know how to adjust brightness? Indoors, I use about 30% brightness. As the day gets dimmer, that slides down to about 25%. If I'm reading something in bed, I start at about 10% and as my eyes adapt, go down to 1%. When I'm finding it hard to keep my eyes open, I take that as my signal to go to sleep. Am I r…

[deleted]

Re: Chemists discover how blue light speeds blindness

#197

Post by erikbye »

wuliwong wrote: post #185
erikbye wrote: post #166

Earlier quoted context omitted.

Both macOS and Windows 10 has on/off now, scheduling, less/more warm adjustment. Windows 10 even has sunset to sunrise based on location. EDIT: HN is becoming more like Reddit every day, I see. Ridiculous. Down-voted for pointing out the existence of helpful features. EDIT: might have been my fault.

Probably you were down-voted because of you starting with "What you are saying is wrong." People probably didn't like your tone and the original comment was only somewhat inaccurate. There still are more features in f.lux than the built in options. And I assume you understand that since you edited that line out.

Correct. I realized that opening line set the wrong tone and was unnecessary.

Re: Chemists discover how blue light speeds blindness

#198

Post by r00fus »

walterbell wrote: post #86
doh wrote: post #55

Earlier quoted context omitted.

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.

You can configure iOS Home button triple-click to invert the screen, so it's white text on a black background. There is a "Smart Invert" option so that photos are not affected.

You can also apply an accessibility filter to increase the darkness in iOS. I have this mapped to a triple home-button click and use it all the time (after reading to kids etc)

https://www.techrepublic.com/article/pro-tip-dim-your-ios-sc...

Re: Chemists discover how blue light speeds blindness

#199

Post by verall »

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

I recommend, instead of Twilight, to use Lux[0]. It has many settings and lets you completely set your own brightness curve, with "negative" brightnesses that darken your screen with an overlay included. Also lets you adjust color temp, of course. The free version had all the features I needed.

[0] https://play.google.com/store/apps/details?id=com.vitocassis...

Re: Chemists discover how blue light speeds blindness

#200

Post by rconti »

jt2190 wrote: post #113
rconti wrote: post #45

Earlier quoted context omitted.

Interesting; when I got 2 new pair of eyeglasses last month, again I fell for the usual "buy all the coatings" spiel. I didn't much understand what they were, but I was told one causes refractions that bother some people. I absolutely notice a blue refraction from car headlights when driving at night. I keep thinking I'm seeing a police light from somewhere. It's fine, just interesting. Well, after looking at a few l…

> I absolutely notice a blue refraction from car headlights when driving at night. I think some ultra-bright headlights are actually slightly blue.

nah, it's a refraction in the lens -- eg, i see it offset from the actual light source.
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