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Good science but not on point really to the root problem. The health problems are a mixed bag (studies on young eyes vs older) of papers and research but I find it hard to believe sunlight level blue spectrum is harmful in healthy eyes but as we get older, our eyes (like the rest of our bodies) become less healthy and are more prone to damage from things that had little or no effect when we were young.
https://www.nature.com/articles/s41514-022-00092-z
Age-dependent effects of blue light exposure on lifespan, neurodegeneration, and mitochondria physiology in Drosophila melanogaster
It's not the phones blue screen light that's the problem. If you're looking at a phone screen, your not going to sleep. It's the blue leds and lamps on everything else after the lights are out and you are actually trying to sleep is why I black tape over the damn blue LED indicators of mode lights. It's the harsh blue spectrum of street and car lights dazzling your eyes and destroying night vision.
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