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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

#181

Post by herf »

visualstudio wrote: post #178
erikbye wrote: post #152

Earlier quoted context omitted.

Windows 10 has this built-in, so does macOS.

I've been a flux user for years, but sadly I had to switch to the Windows 10's version. Flux causes a 1 frame lag every 60 frames which was driving me crazy. Only fix was to put it into Safe Mode, but Flux is really janky in that mode; especially when alt tabbing. The Windows 10 version also has no lag while shift colors. It's a shame. I'd love to have kept supporting flux.

Our 2010 version polled once a second to get around a lot of bugs (Intel GPUs back then would forget their color settings on standby and lots of other things).

Since our update last year (v4) f.lux stopped doing this and does a lot of other tricks to reduce impact on framerates too.

Re: Chemists discover how blue light speeds blindness

#182

Post by mafuyu »

herf wrote: post #172
mafuyu wrote: post #44

I'm in the process of building a Philips Hue-compatible light therapy LED strip that goes above my bed, and I chose 500 nm cyan LEDs due to this concern. The goal is to have the lights gradually wake me up every morning and help align my sleep cycles, as I suffer from Delayed Phase Sleep Disorder. Figure 3[0] in the paper seems to show that 500 nm is safe, and that melanopsin has high absorption at 500nm, which has i…

Yes, also if your eyes are closed when it starts, 500nm is better because more gets through the eyelid. Better if you diffuse more and spread out the light over more of the visual field. But the main thing you'll want to make sure is that you can get enough light. There is some evidence that >200 lux with this wavelength will help, but most light therapy uses tons of light (1500 melanopic lux or more): https://fluxom…

Thanks for the tips! That link is super interesting.

I'm guessing melanopic lux is the lux output weighted over the spectral absorption curve of your eyes?

Some napkin math: I have ten 3W LEDs, and each might produce around 1000 lux when fully driven. If we drive each at half strength, and half of the generated lux is melanopic lux, that's 2500 melanopic lux.

Re: Chemists discover how blue light speeds blindness

#183

Post by Forge36 »

herf wrote: post #136

f.lux author here, still slogging through the article. It is hard to understand the light levels used because they use "power" (uW, mW) from a laser, and not "irradiance" (uW/cm^2 or mW/cm^2), so which area they have concentrated that light over is hard to understand. All I can see is it is from a laser, so the irradiance could be extremely high. The human lens filters most light at the peak of the given spectrum for…

I'm running f.lux on my work PC (tones down a bad otherwise VERY bright-blue monitor).

Thank you for reading/writing out your interpretation of the article so clearly (highlighting points others are likely to trip on not coming from a related background)

Re: Chemists discover how blue light speeds blindness

#184

Post by bradknowles »

erikbye wrote: post #169
benrbray wrote: post #159

Earlier quoted context omitted.

These are relatively new features, and they arguably wouldn't have been added if not for the popularity of flux ;)

Does that matter? It's built-in now, and that's why I commented. To raise awareness. If built-in features have you covered there is no point going third-party.

It's nice that they are there for people who won't install 3rd party software to get the extra features, but f.lux is still better.

Re: Chemists discover how blue light speeds blindness

#185

Post by wuliwong »

erikbye wrote: post #166
arama471 wrote: post #161

Earlier quoted context omitted.

I assume you mean the night light button in the action center? If so I would argue f.lux does a lot more. For one thing you can choose the hue it goes to, but also unlike the Windows 10 one which (AFAIK) is simply on/off, f.lux will adjust based on a schedule which means that you don't typically notice the effects (as the change happens slowly). This, combined with the ability to change damn near every parameter it u…

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.

Re: Chemists discover how blue light speeds blindness

#186

Post by alain_gilbert »

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 !

Re: Chemists discover how blue light speeds blindness

#187

Post by justinc8687 »

mafuyu wrote: post #110
priccis wrote: post #83

Earlier quoted context omitted.

I'm sorry I can't help you, but after reading an article posted here about melatonin I got interested in light therapy, but commercial devices are a bit expensive. Are you documenting your project?

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.

Re: Chemists discover how blue light speeds blindness

#188

Post by rapnie »

tough_luck wrote: post #173
wpasc wrote: post #156

Earlier quoted context omitted.

Thank you for your input, but I mostly want to thank you for f.lux. It has been one of my favorite things for a long time. It's silly how long it's taken companies to provide a native blue light filter and your product just kicks ass. If you guys ever wanted to figure out your app on a smart TV (or apple TV), I know there'd be a lot of thankful people! Also, I'd love to contribute to the ongoing dev of f.lux (I don't…

For my Samsung TV I use movie mode and also change colour temperature to warm.

I have the "blue light filter" on by default, on my android mobile. Don't know how effective it is, but it will at least help a bit.

Re: Chemists discover how blue light speeds blindness

#189

Post by astrodust »

dqpb wrote: post #141
vosper wrote: post #101

Earlier quoted context omitted.

But those receptors signal something unpleasant - a terrible taste, pain. Looking at blue doesn't cause pain or unpleasantness.

On the contrary in fact, I find gazing at the blue sky to be calming and enjoyable, and find it promotes diffuse thinking, which can greatly speed up problem solving.

Some people like the smell of ozone.

Ozone doesn't have a smell. What you actually smell is your nose burning. Ozone is a very aggressive oxidizer.

Looking directly at the sun is also a super bad idea.

Re: Chemists discover how blue light speeds blindness

#190

Post by hinkley »

Forge36 wrote: post #183
herf wrote: post #136

f.lux author here, still slogging through the article. It is hard to understand the light levels used because they use "power" (uW, mW) from a laser, and not "irradiance" (uW/cm^2 or mW/cm^2), so which area they have concentrated that light over is hard to understand. All I can see is it is from a laser, so the irradiance could be extremely high. The human lens filters most light at the peak of the given spectrum for…

I'm running f.lux on my work PC (tones down a bad otherwise VERY bright-blue monitor). Thank you for reading/writing out your interpretation of the article so clearly (highlighting points others are likely to trip on not coming from a related background)

Have we fixed the “optimized for electronics store demo” problem with monitors yet?

Part of my ritual of setting up a new monitor is to turn down the brightness and increase the contrast. They almost always default to very bad values. Brightness, temperature and green/blur balance are all off for an office setting.

In the worst case the backlight was capable of outputting twice as much light as I really needed.

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