Lady Gaga's "Bad Romance" video started the trend, and the anime-inspired large-eye look is now all the rage.
But the FDA has not approved new contact lenses that create the illusion of bigger eyes. You can't even buy the circle lenses in the U.S. However, they can be purchased on the Internet for just $20.
Eye doctors tell "Good Morning America" that prolonged wear can lead to infections, and that an incorrect fit can scratch the cornea:
Do your teens wear circle contacts?