I recently posted that an Oakland woman found that wearing orange glasses (which block blue light) in the evening greatly improved her sleep, which had been bad for decades. My post underestimated the improvement. Before she started wearing the glasses, it took her 2-4 hours to fall asleep. After she started wearing the glasses, it took 15-30 minutes. She wears the glasses from 8 to 10 pm. After that she goes to bed and tries to fall asleep.
I was very impressed by her story and started wearing orange glasses starting at 8 pm, even under incandescent light. Previously I only used them when looking at a computer screen in the evening. I’m not sure if wearing them more improves my sleep, but if I had to guess I’d say it does.