3 ms·

> Science oozes back and forth. Not really. The point is this, the whole blue light business popped up because the people who were doing the studies forgot th

> Science oozes back and forth. Not really. The point is this, the whole blue light business popped up because the people who were doing the studies forgot that amber dusks are fairly rare outside of cities/equator. Those of us nearer the poles have long, blue evenings. Yes, in march and august we tend to have brilliant orange sunsets. However those are the exceptions, not the rule. If you look at the colour temperature from noon till actual dusk, you'll see that it increases as time goes on. pinning screen colour on the quality of sleep is a fools errand. We do not look at a screen for it's colour we look at for its content. That content has a much great effect on our sleep than the screen brightness and colour temperature. TLDR: twilight is blue, not orange. Colour temperature and sleep quality is not convincingly linked.

johnisgood 5y ago
You do not have to be looking at a screen for its color for it to affect you, methinks. That said, there is huge business from it. Same with the common saying from optometrists to parents that you have to replace your glasses (lenses at the very least) every 1-2 years. It is bullshit. It actually makes your eyes worse because it makes it work harder. If you are at -4, and you would need -5 to see sharp, do NOT get that -5, you can train your eyes to see sharper, but regardless, by getting that -5, your vision will only continue worsening. You need glasses to see your screen? Try looking at it for an hour without it. You will actually see it a tiny bit better without glasses, and that is just after an hour! Your eyes might relax a bit too much as well so you might get diplopia when you look close (at your phone screen) after looking at your monitor without glasses. It is harmless though. As for the warmer color temperature: I do use it. I prefer it warmer because it burns my eyes much less. Similarly I prefer the brightness of my phone's screen around 40%. I have lenses that "block" blue light (i.e. makes white look more yellow). If you are a developer doing UI/UX and that sort of thing where color matters, then you probably want to disable f.lux, redshift, or whatever it is that you are using. We could also get philosophical here and discuss qualia. Is my red your red? :) So much to discuss!

johnisgood 5y ago

You do not have to be looking at a screen for its color for it to affect you, methinks. That said, there is huge business from it. Same with the common saying from optometrists to parents that you have to replace your glasses (lenses at the very least) every 1-2 years. It is bullshit. It actually makes your eyes worse because it makes it work harder. If you are at -4, and you would need -5 to see sharp, do NOT get that -5, you can train your eyes to see sharper, but regardless, by getting that -5, your vision will only continue worsening. You need glasses to see your screen? Try looking at it for an hour without it. You will actually see it a tiny bit better without glasses, and that is just after an hour! Your eyes might relax a bit too much as well so you might get diplopia when you look close (at your phone screen) after looking at your monitor without glasses. It is harmless though. As for the warmer color temperature: I do use it. I prefer it warmer because it burns my eyes much less. Similarly I prefer the brightness of my phone's screen around 40%. I have lenses that "block" blue light (i.e. makes white look more yellow). If you are a developer doing UI/UX and that sort of thing where color matters, then you probably want to disable f.lux, redshift, or whatever it is that you are using. We could also get philosophical here and discuss qualia. Is my red your red? :) So much to discuss!