About 45 million people in the US wear contact lenses — and most of them do it wrong, according to a new study by the Centers for Disease Control and Prevention. Check out what you're doing wrong here!

Do you want to be one of those people who is going blind and it hurts like crazy and you can't work for three months? Once you've got a serious eye infection going in your cornea, you're in trouble. Learn more about what you're probably doing wrong with contacts!