Blue-blockers are glasses which can help lower your cortisol levels (stress hormone) caused by bright lights at night. When you’re exposed to the blue spectrum of light at night, you block your natural melatonin production. Wearing them will help you get a better night’s sleep! Check out this article in Nature
The lenses block the type of light that disturbs sleep. That light is on your cell phone, TV, and on all the LED lights in your house (except for the orange or red lights if you happen to have those).
HOW TO USE
Blue-light blocking glasses are to be worn 1-2 hours before going to sleep in order to block light that interferes with sleep hormones. Especially important if you’re going to look at your phone or watch TV 2-3 hours before bed.
Quality matters. There are cheaper glasses have poor quality lenses, but they are better than nothing (check these out on Amazon for $35).
But if you can spent a little extra $ on them, they I recommend you check out the links and resources below. There are may styles and options, even prescription ones which I personally use.
The orange glasses are stronger blocking (before sleep or while watching TV), and the yellow glasses are less strong – can even be used in daytime for people who spend a lot of time in front of computers or phones. (I have both colors)
Low Blue Lights
Occusleep (the ones Dr. Jonny Bowden wears)
IF YOU ALREADY WEAR GLASSES
These fit OVER your prescription glasses
1) Twilight Fit Overs (fit over Rx glasses)
Some Q&A about the science of blocking “blue light” to improve sleep