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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

#211

Post by saagarjha »

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.

Night Shift on iOS and macOS also has a sunset-to-sunrise setting.

Re: Chemists discover how blue light speeds blindness

#212

Post by saagarjha »

anonytrary wrote: post #209
dsr_ wrote: post #177

Earlier quoted context omitted.

... 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…

This isn't weird at all. I'm jealous of your 1%. The default low on my phone is maybe like 5-10% (I don't know how to check this), and it feels crazy bright when I'm in bed.

What phone are you using?

Re: Chemists discover how blue light speeds blindness

#214

Post by saagarjha »

mikeleeorg wrote: post #92

For the f.lux Mac users here, do you prefer that to Mac's Night Shift? I just found this article, which details why f.lux is better than Night Shift. But it's written by f.lux, so it's a bit biased. https://9to5mac.com/2017/03/28/flux-developer-says-apples-ne... I'm guessing both are better than nothing, but is one actually better than the other?

I use Night Shift because it’s built in and does what I want it to do without glitching.

Re: Chemists discover how blue light speeds blindness

#215

Post by gyc »

zachrip wrote: post #112

I was recently diagnosed with a condition called retinitis pigmentosa (it basically just destroys your retinas). It's part of a larger condition called usher syndrome (which caused my severe hearing loss at birth). I'm on heavy doses of vitamin a palmitate as well as some other vitamins. Another thing that I haven't done yet but will be doing shortly is blue light blocking glasses, especially since I sit in front of…

I'm in my late 30s and was recently diagnosed with retinitis pigmentosa too. I've started to use night shift/f.lux on my computers, and reading this article is also motivating me to update my glasses to one with blue light blocking.

Re: Chemists discover how blue light speeds blindness

#216

Post by saagarjha »

astrodust wrote: post #189
dqpb wrote: post #141

Earlier quoted context omitted.

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.

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

Wait, what? Do you have a source for this?

Re: Chemists discover how blue light speeds blindness

#217

Post by rom16384 »

hestipod wrote: post #87

This or something connected to it is literally ruining my last chance at life but I cannot solve it and there is always a catch. I was disabled long ago by bad surgery and left in lots of pain. My physical career was ended. I was denied social assistance and fell in every crack. Life has never been stable enough long enough to reeducate and rebuild. In suicidal desperation I posted in a few places asking for ideas. A…

I've researched these kind of symptoms, and the only common cause I could find on the internet from the few people that complained about this was that it was caused by an infection in the head/neck area. One person had an infected wisdom tooth, another one some problem with his neck.

Taking some Vitamin D may help (stay under the 4000 UI/day tolerable upper limit). There's a forum where people with similar issues used gather at http://bcomputermonitorpain.runboard.com/

As far as computer monitors go, you could either use an old CRT monitor, or try a e-ink monitor such as the Dasung Paperlike, or a modded Android e-ink tablet.

Re: Chemists discover how blue light speeds blindness

#218

Post by abledon »

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…

how does eye color factor into this? I read that objects with certain colors reflect rays of the same wavelength.

Re: Chemists discover how blue light speeds blindness

#219

Post by mark-r »

Brakenshire wrote: post #68
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?

I think, white LED bulbs do use a single wavelength blue LED, but they pass it through phosphors which transform it into a similar distribution of wavelength that you would find from an incandescent bulb, or sunlight. LED's are a lot better than fluorescent lighting, which does often have very dramatic peaks and gaps. In theory, you can look at the CRI rating, but in fact CRI only uses a small number of wavelength pr…

Yes, white LEDs are based on blue LEDs with phosphors. But I don't think they convert all the blue light, so they're still heavy on the blue output. I'd need to see a reference to believe they have less peakiness in the spectrum than fluorescent lights.

CRI may not be the best rating for spectrum smoothness, but it's the only one we have for now. It's still hard to find bulbs that even bother to rate themselves.

Re: Chemists discover how blue light speeds blindness

#220

Post by sundvor »

wpasc wrote: post #156
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…

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…

Hook your TV up to a computer running f.lux or similar! I've used a HTPC for the past decade and more, wouldn't go back.
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