Learn more› By Kaitlyn Wells and Zoe Vanderweide If you believe the hype, blue-light blocking glasses will prevent headaches, decrease eyestrain, and help you sleep like a baby. But do they work?

Navied Mahdavian is a cartoonist and writer. He is a contributor to the New Yorker and author of the graphic memoir “This Country: Searching for Home in (Very) Rural America.” ...