"The perishing of fabrics and the rotting of early rubber, due to chemical instabilities and damp conditions, create new and sinister, puzzling abnormalities. Time and repeated wear have caused a beautiful metamorphosis, never intended or imagined by the maker." Haunted Air: "A glimpse of how the old, weird America celebrated All-Hallows Eve."
Inarguably, I think, using contact lenses solely to change the way you look (for halloween, perhaps) is a wonders-of-technology experience, one that reached critical mass some time ago. There have been cases of permanent injury, though, and the NY Times reports that the F.D.A. is cracking down. How great is the risk, and can it be mitigated? (Other than, you know, by actaully getting them via perscription.)