Some 45 million Americans depend on contact lenses to correct their vision, and while contacts are very safe overall, not caring for them properly can lead to serious eye infections, health experts warn.
Thatiana Medina learned that the hard way when she scratched her cornea.
"I forgot to take off my contact lens before going to bed," she said.
Falling asleep with your contacts in is a common problem.
"It can increase your chances of an eye infection by six to eight times," said Jeneen Interlandi, Consumer Reports' health editor.