I think the bigger picture is _sleep hygiene_. Don't use your LCD device before bed. Don't have all your birght LEDs blaring in your house until midnight.
We evolved as diurnal monkeys, with bright days and moonlit nights, staring at a mix of near and distant focal points all day. Now we stare at a glowing blue rectangle 1-2' from our faces for the majority of waking hours.
Break the cycle. I for one read (paper books, or on tape) after 9pm. I have zero devices, clocks, LED's, etc in my bedroom. My Phillip's Hue lights step down and dim as the evening progresses, rather than lighting my house like a bus station. I sleep much better than I used to when I sat in front of 3x blaring LED monitors until 1pm each night.
Do we know if it's really about the light? For me, I suspect that computers and phones are just hyperstimulating. It prevents winding down and preparing to sleep, so it's about the medium, not the technology.
We evolved as diurnal monkeys, with bright days and moonlit nights, staring at a mix of near and distant focal points all day. Now we stare at a glowing blue rectangle 1-2' from our faces for the majority of waking hours.
Break the cycle. I for one read (paper books, or on tape) after 9pm. I have zero devices, clocks, LED's, etc in my bedroom. My Phillip's Hue lights step down and dim as the evening progresses, rather than lighting my house like a bus station. I sleep much better than I used to when I sat in front of 3x blaring LED monitors until 1pm each night.
Good luck.