I didn't know that, but I have considered contacts for cosmetic reasons. However, they seem like an awful lot of hassle compared to glasses.

Another question: wouldn't the contacts have to be complex/progressive lenses of some kind? Clearly, I need two different prescriptions—one for computer work, one for everything else. Does staring out a bottom or top portion of a contact lens pose any difficulty beyond what one finds with progressive lenses in normal glasses?