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Blue light filters don't work – controlling total luminance is a better bet

neuroai.science

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Re: Blue light filters don't work – controlling total luminance is a better bet

#251

Post by IAmBroom »

tartoran wrote: post #123
IAmBroom wrote: post #94

Earlier quoted context omitted.

You can test the negative easily, but the positive is harder. Thus: placebos.

You're saying that my eyes straining going away from reduced blue light is placebo? I can feel it right away and it gets worse in minutes, time and time again. As soon as I remove blue light the strain is gone. Honestly, I don't care what other people have to say, to me it's obvious that it helps and I stick to it. Again, I don't think this is universal and it may not help you if you don't notice immediate improvemen…

That's reasonable: it works for you. But be aware that, since placebo effects are psychological, their effects can be noticed in the time it takes your brain to notice you put them on.

Re: Blue light filters don't work – controlling total luminance is a better bet

#252

Post by IAmBroom »

pvtmert wrote: post #209

Interesting take for me is that melatonin (over-)usage can be severely harmful for the individuals. ... over-the-counter melatonin supplements can contain anywhere between 10 to 30 times as much melatonin as is optimal to maintain circadian hygiene. If you have ever taken melatonin and got immediately knocked out cold, had weird dreams and woke up in the middle of the night sweaty or shivering, you likely took too mu…

> The right dose is ~0.3 mg,

I've heard this before, but the only metastudy I could find strongly supports a dose of 3 mg 3 hours before bedtime. Dose effectiveness effectively halves when taking less than ~2 mg or more than ~10 mg.

https://onlinelibrary.wiley.com/doi/10.1111/jpi.12985

Re: Blue light filters don't work – controlling total luminance is a better bet

#253

Post by hn_throwaway_99 »

hogwasher wrote: post #247
hn_throwaway_99 wrote: post #222

Earlier quoted context omitted.

If the author goes "I couldn't find enough high quality studies on the topic I'm discussing", then the conclusion should be that we need more studies, not to come to unwarranted conclusions in the absence of actual data. > Well some people are spending money and time investing in blue light filtering glasses and other solutions. Ironically, we actually do have a number of good studies on the effects of blue light fil…

If that's the case, I want to see studies on how blue light filtering glasses fare versus just regular-ass sunglasses (of equivalent tint). Is it the reduction of blue light that helps people, or is it just the reduction of light, full stop? Just the latter on its own is quite thoroughly proven to help people sleep, and helps with migraines, and so on. Or what about UV light? I've never seen anyone say that an anti-U…

There was a reason I put "easily findable with a Google search" in my original comment.

Re: Blue light filters don't work – controlling total luminance is a better bet

#254

Post by Barbing »

lisper wrote: post #35

Night shift seems to have a very strong causal effect on my sleep cycles. Up until about ten years ago I was a night owl, rarely falling asleep before midnight and rarely waking up before 8. Then I started getting serious about light hygiene and using night shift and now I'm a serious day person, rarely staying awake after 11 and rarely waking up after 7. But the real clincher is that when I travel I don't change the…

Been more careful with my lighting this week :) how’s yours?

Re: Blue light filters don't work – controlling total luminance is a better bet

#255

Post by lisper »

Barbing wrote: post #41
lisper wrote: post #35

Night shift seems to have a very strong causal effect on my sleep cycles. Up until about ten years ago I was a night owl, rarely falling asleep before midnight and rarely waking up before 8. Then I started getting serious about light hygiene and using night shift and now I'm a serious day person, rarely staying awake after 11 and rarely waking up after 7. But the real clincher is that when I travel I don't change the…

>inspired me to do a control experiment Delightful, see ya the 27th!

So the results are in, and I haven't actually noticed much of a change. Last night I went to sleep after 11 and woke up at 5:30. So apparently night shift by itself doesn't have much of an impact one way or the other, at least not in a week.

Re: Blue light filters don't work – controlling total luminance is a better bet

#256

Post by lisper »

Barbing wrote: post #254
lisper wrote: post #35

Night shift seems to have a very strong causal effect on my sleep cycles. Up until about ten years ago I was a night owl, rarely falling asleep before midnight and rarely waking up before 8. Then I started getting serious about light hygiene and using night shift and now I'm a serious day person, rarely staying awake after 11 and rarely waking up after 7. But the real clincher is that when I travel I don't change the…

Been more careful with my lighting this week :) how’s yours?

https://news.ycombinator.com/item?id=47185525

Re: Blue light filters don't work – controlling total luminance is a better bet

#257

Post by Barbing »

lisper wrote: post #255
Barbing wrote: post #41

Earlier quoted context omitted.

>inspired me to do a control experiment Delightful, see ya the 27th!

So the results are in, and I haven't actually noticed much of a change. Last night I went to sleep after 11 and woke up at 5:30. So apparently night shift by itself doesn't have much of an impact one way or the other, at least not in a week.

Maybe a few weeks or months… or nevers, who knows! Thanks for the update :)
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