At the Shangri-La Diet forums, Anima writes:
I have been diagnosed with ADHD and Bipolar II disorder. I am also a Non-24, a chronic circadian rhythm disorder where one’s body thinks a day is longer than 24 hours. . . .I’ve been using amber safety glasses (around $3 in the hunting section of the sporting goods store) for dark therapy. I put them on 3 hours before I want to go to sleep. They block blue light, allowing dark therapy without the dark. I also wear an eye mask while I sleep. The glasses make me look like a big weirdo, but they really work. It’s easier to get to sleep, and they prevent hypomania (the milder form of mania that people with Bipolar II experience) better than any medication I have tried. It makes sense that almost anyone could benefit from them, because our ancestors were not exposed to blue light after dark.
She makes many other interesting observations, such as how she kept her cat from waking her up too early.
I don’t have trouble falling asleep but this makes me wonder what effect blue-blocker glasses would have if I wore them regularly at night. Nowadays I carry them in my backpack in case I have to be exposed to fluorescent light at night, such as on the subway. Even though I avoid fluorescent light at night, I still get blue light at night from my laptop screen. I have thought it is too weak to matter because using f.lux (which reddens the screen at night) made no clear difference. I can test this idea again by wearing blue-blocker glasses. I have been using a Zeo to measure my sleep, which may help me notice changes.
At Genomera, Michael Nagle and Eri Gentry are doing a study of the effect of blue-blocker glasses on sleep.