>how horrible blue light is for humans, and how much blue our white LED lighting kicks out I hope your research will touch upon the trend of "blue blocking" (a

>how horrible blue light is for humans, and how much blue our white LED lighting kicks out I hope your research will touch upon the trend of "blue blocking" (aka yellow) eyewear. The genuine blocker products appear as a deep intense yellow, but I believe a 'lite' version is sold under the generic name Nighttime Driving Glasses. While I haven't tried the former, I find that the latter does subjectively increase eye comfort. It seems like a fully-optimized product could include not only a broad-band filter, but also a "notch filter" at the specific wavelengths of blue light LEDs preferentially emit. --- This reminds me of early research on chickens: it was discovered that if chickens vision was filtered to only see red light, they wouldn't attack other chickens at the sight of blood. Researchers fitted hilarious red goggles on the chickens[1][2]. One day some enterprising person recalled that optics is path-reversible, so you can locate a filter on the light bulb instead. Nowadays these red-tinted "chicken bulbs" (typically doubling as heat lamps) are still sold at major ag stores. LED options are emerging too. Chicken eyeglasses are less common, but they're still available online. The advantage is this solution still works outside and in coops lit by natural light. I look forward to your upcoming post! [1] https://cosmicearth.wordpress.com/2012/01/25/chicken-glasses/ https://cosmicearth.wordpress.com/2012/01/25/chicken-glasses... [2] https://www.youtube.com/watch?v=5xQD5G10W4U https://www.youtube.com/watch?v=5xQD5G10W4U