Opticians in the U.K. say they sell the lenses only after a full eye test and offer check-ups afterward. They also stress fashion lenses need the same cleaning and disinfecting as prescription contacts. This has led opticians to issue a public warning about the dangers of swapping lenses. Contact lens use is thought to be the most significant cause of microbial keratitis. The main distributor of lenses to U.K. opticians is a company called Chrome-X and it, too, shares concerns about the swapping of lenses and the fact that teens are buying the lenses without advice.
Contact lenses have for some reason been seen as a fun element.
I think they have missed the point that putting the contact lens on your eye does carry risks with it.