The light is definitely different in ways that we can measure. They are both in front or below your eyes and way dimmer than the sun which is the important thing for trying to optimize light for sleep. Again assuming you expose yourself to proper bright light during the day.

Content is why your TV keeps you up. Go ahead and watch Hardcore Henry with the worlds best blue light blockers right before bed and see how that goes for you. Next day watch something you find boring as hell with no blue light blockers and see how you sleep.

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I’ve recommended to parents to use blight light filters on iPads for their kids and their sleep has always improved. That’s what confuses me, why does that work on children?

You can't do that without altering their other behaviors. Basically a "don't think about pink elephants" situation.

Also remember that sleep quality without a tracker is very subjective and reporting someone else's sleep quality even more unreliable. Insomnia specialists often find patients who swear they never nap asleep in the waiting room before a visit.

They were young kids like 2 years old. They had no idea what I was doing with the screens. Their sleep cycle was more regulated. They started to wake up consistently around the same time and go to bed around the same time. Nothing else changed.

2 year olds with iPads, ugh.

I did say if you are a cave troll who gets no sunlight the devices are more of a risk.

Which most people are

I hope you would agree getting some sun is a better intervention than even less light.

I’m not their parent though lol