The Best Blue-Light-Blocking Glasses

If you believe the hype, blue-light-blocking glasses will prevent headaches, decrease eyestrain, and help you sleep like a baby. But most light sources (including the sun) produce blue light naturally and always have, so why are we suddenly trying to block it? And do these glasses do what they claim? The answer is murky, but we can tell you what scientists actually know about the dangers of blue light—and suggest some sturdy and stylish pairs of blue-light glasses you may want to try.