The US FDA and the Centers for Disease Control are still looking for the source and cause of the fusarium keratitis fungus that forced Bausch & Lomb to halt shipments of its once popular contact lens solution ReNu with MoistureLoc. Bausch & Lomb’s chief medical officer, Brian Levy, stated that “I think there’s more than one factor for sure.” The comments were part of the company’s thoughts concerning the origin of the fungus.