This (older) article says: "we don't spend that much time staring at the sun". But just seeing the blue sky gives your retina about 50x the dose of blue light (hazard) as a normal LED display.
Blue light hazard is generally considered to be "reciprocal" which means for most doses, you can measure total energy (power * time). So it is easy to argue that one hour spent outdoors (not staring at the sun, just doing normal stuff) gives you more dose than 12 hours at a computer. So for light seen during the day, nobody has yet shown that seeing a computer is harmful, and the risk should be lower than spending an hour outdoors.
At night, it's another story, and there is not clear evidence here. The retina experiences daily circadian rhythms, and so risks to your eye may be enhanced by bright light seen at night. Less light at night is good for your circadian clock, and it is almost certainly good for your eyes too.
OT: I used flux ages ago. You seem still to be active since you intro'd yourself als the flux guy. Out of curiosity, why should anyone still use flux nowadays when all OSes have time-based red-shifting built-in?
A greater deal of blue filtering was available on f.lux last time I used it. Unfortunately since it did not allow for setting hours other than the local sunrise and sunset times, it wasn't useful to someone like me that suffers light exposure insomnia during the months with longer daylight hours. Even though my home has been setup to accommodate this, f.lux, at least last time I used it, would not. The built in feature in my OS happily lets me choose for myself when to filter blue instead of denying me that choice.
It sounds like you've moved on so this likely isn't useful, but f.lux lets you override the GPS coordinates, so you could likely just negate your latitude to shift to your location's winter schedule.
Thx for f.lux it's great. A little question : would it be possible to implement an Exposure slider in f.lux ? Sometimes you want to have even lower luminosity than the lowest backlight value possible, and sometimes in plain sun one could want to brighten its screen even if it means smashing the colors (saturating the rgb channels). Is there a way to sponsor this feature ? Thanks !
Taurine found in the RedBull drink and body building supplement will help repair the damage bright light carries out on your eyes, its also a nootropic helping users to lay down memories when they sleep, dream frequency including remembering dreams will also increase, dreaming is a sign that memories and learning is taking place amongst other things. Re no one showing a computer screen is harmful, the blue light from devices can keep people awake for longer including when using F.Lux, and the circadian rhythmes are such that it supresses the release of melatonin the sleep hormone which typically starts to rise from around 21:30 peaking around 01:30 before dropping off sharply. This time various depending on where you live in the world and day of the year as its link to sunset times. Melatonin is also 4x more potent as an anti-oxidant than Vitamin C and also helps increase the release of mesenchymal stem cells which aid the repair process carried out when we sleep. So yes studies have shown computer screens, smartphones used late in the evening and at night can cause damage to the body. Its not exclusively blue light which keeps people awake either, red light can also keep people alert, this is why vehicle brake lights are red, red being associated with danger which arouses the mind and body. One of the problems with the human body is it can also function adversely if expected light is missing from the light spectrum of the source. This will become more common place with the use of narrow band light sources like LED's when compared to the sun. The body has evolved over thousands of years in an environment which we are changing rapidly through technology and evolution can not keep up with man made changes.
This (older) article says: "we don't spend that much time staring at the sun". But just seeing the blue sky gives your retina about 50x the dose of blue light (hazard) as a normal LED display.
Blue light hazard is generally considered to be "reciprocal" which means for most doses, you can measure total energy (power * time). So it is easy to argue that one hour spent outdoors (not staring at the sun, just doing normal stuff) gives you more dose than 12 hours at a computer. So for light seen during the day, nobody has yet shown that seeing a computer is harmful, and the risk should be lower than spending an hour outdoors.
At night, it's another story, and there is not clear evidence here. The retina experiences daily circadian rhythms, and so risks to your eye may be enhanced by bright light seen at night. Less light at night is good for your circadian clock, and it is almost certainly good for your eyes too.