A cosmetic contact lens is a contact lens designed to change the appearance of the eye. Some companies produce contacts that can change the tint or color appearance of the eye, or can place various designs on it (opaque lenses).
There also exist contacts that can give the iris an enlarged appearance, or can be used to mask congenital defects (iris coloboma), absence (aniridia) or damage (dyscoria) to the iris. These contacts are rarely seen day-to-day, although many performers, both in music and movies, commonly use them for artistic purposes. Here you can find some extraordinary designs for contact lenses in a cool collection. Enjoy it :)