Chemists discover how blue light speeds blindness • Hacker News Board

Re: Chemists discover how blue light speeds blindness

#341

Post by fouc » Sun, Aug 12, 2018, 2:07 AM UTC

opan wrote: post #319

fouc wrote: post #295

Earlier quoted context omitted.

I wanted to leave a note for others to keep in mind that f.lux can make the computer screen TOO comfortable to read in the evening. Which can lead to eye strain. I used f.lux for 2 years. I found that I would stay up way past my bedtime, glued to the computer screen, and end up with correspondingly tired & fucked up eyes. So I got rid of f.lux, and after that, I would go to bed at a more proper time. When the screen…

I also tend to have eye strain if I'm computing very late at night , and take it as a signal to go to bed. I've described this to people, and it seems it doesn't affect everyone. It could also just be that there's a difference in awake time, blink frequency, or some other factor. I'll often go to bed more because my eyes are giving up on me and starting to burn rather than any sort of mental fatigue. I don't always k…

The pain signals of eye strain doesn't seem to hit right away, so I can keep reading past the point where I really should stop. The pain creeps up gradually but it's really too subtle if I'm stuck on an engaging story. But I don't have that problem if I turn off f.lux, that way my discomfort is more immediate and I stop.

Re: Chemists discover how blue light speeds blindness

#342

Post by nnain » Mon, Aug 13, 2018, 5:09 AM UTC

fouc wrote: post #341

opan wrote: post #319

Earlier quoted context omitted.

I also tend to have eye strain if I'm computing very late at night , and take it as a signal to go to bed. I've described this to people, and it seems it doesn't affect everyone. It could also just be that there's a difference in awake time, blink frequency, or some other factor. I'll often go to bed more because my eyes are giving up on me and starting to burn rather than any sort of mental fatigue. I don't always k…

The pain signals of eye strain doesn't seem to hit right away, so I can keep reading past the point where I really should stop. The pain creeps up gradually but it's really too subtle if I'm stuck on an engaging story. But I don't have that problem if I turn off f.lux, that way my discomfort is more immediate and I stop.

What you described is exactly how I've been feeling for last 3-4 years. The pain signal kicks in the next day, sometimes even a day after. So yeah you can't tell at the time you're working late how the eyes will feel the next days. Sometimes it also triggers a headache and that spoils the whole day.

So the only solution I have figured is to be regimented about my screen time. I love working late at night and now have to tell myself to turn the work off. That kinda sucks.

Btw, It happened both with my previous laptop with LCD screens and the current LED screen.

For a few months I got hooked to Mobile gaming, and that just multiplied the problem! So I drastically cut down on my mobile time and that helps. My mobile had an LCD screen btw; so LED or LCD doesn't seem to be a factor for this particular problem.

Re: Chemists discover how blue light speeds blindness

#343

Post by otuutti » Mon, Aug 13, 2018, 9:56 AM UTC

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…

Got my kitchen lighting done with these hue controlled light strips. Not entirely certain if they fulfill your need, but maybe an alternative if someone wants to replicate. They have very good CRI, which might be good/bad for your application. https://www.sowilodesign.com

Re: Chemists discover how blue light speeds blindness

#344

Post by fouc » Mon, Aug 13, 2018, 2:18 PM UTC

nnain wrote: post #342

fouc wrote: post #341

Earlier quoted context omitted.

The pain signals of eye strain doesn't seem to hit right away, so I can keep reading past the point where I really should stop. The pain creeps up gradually but it's really too subtle if I'm stuck on an engaging story. But I don't have that problem if I turn off f.lux, that way my discomfort is more immediate and I stop.

What you described is exactly how I've been feeling for last 3-4 years. The pain signal kicks in the next day, sometimes even a day after. So yeah you can't tell at the time you're working late how the eyes will feel the next days. Sometimes it also triggers a headache and that spoils the whole day. So the only solution I have figured is to be regimented about my screen time. I love working late at night and now have…

I also ended up getting prescription glasses (really mild correction) to reduce eye strain when staring at computer screens. I only wear the glasses when looking at computer or phone (ideally, but not always).

I also found retina display helped reduce eye strain.

Re: Chemists discover how blue light speeds blindness

#345

Post by no_identd » Sun, Aug 19, 2018, 7:26 AM UTC

jonhendry18 wrote: post #329

no_identd wrote: post #322

Earlier quoted context omitted.

Hey since I have you here, please, can you add support for proper color calibration, profiling & characterization to f.lux? Or at least outline in more detail how f.lux handles color profiles? I wouldn't mind having to create multiple display profiles for this, but right now, flux seems to only support non-LUT based, Matrix based calibrations and only if they have VCGT headers, and then only based on those headers. B…

Surely you don't expect color profiles to work when f.lux is operating? I'm not sure what the point would be for color profiles when you're explicitly opting for distorted color reproduction with f.lux. Is what you want more like "don't mess with the operation of color profiles when f.lux is disabled or otherwise shouldn't be adjusting the screen?"

>Surely you don't expect color profiles to work when f.lux is operating?

1. Don't call me Shirley.

2. I in fact do, in a way:

>I'm not sure what the point would be for color profiles when you're explicitly opting for distorted color reproduction with f.lux.

I opt for __linear distortion__ of a non-linear function. What f.lux ought to do consists of shifting the whitepoint coordinates of the current color profile. Which has the point of only distorting colors in a way where my brain can adapt to it.

But that's not exactly what f.lux does - it already DOES try to account for color profiles, but it does so incorrectly.