“Scientists used an iPhone and a camera lens to diagnose intestinal worms in rural Tanzania, a breakthrough that could help doctors treat patients infected with the parasites, a study said on Tuesday. Research published by the American Journal of Tropical Medicine and Hygiene showed that it is possible to fashion a low-cost field microscope using an iPhone, double-sided tape, a flashlight, ordinary laboratory slides and an $8 cameral lens. The researchers used their cobbled-together microscope to successfully determine the presence of eggs from hookworm and other parasites in the stool of infected children.”
http://www.rawstory.com/rs/2013/03/12/scientists-use-iphones-to-diagnose-intestinal-worms/