WASHINGTON – Scientists used an iPhone and a camera lens to diagnose intestinal worms in Tanzania, a breakthrough that could help doctors treat patients infected with the parasites, a study said 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 camera 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. “There’s been a lot of tinkering in the lab with mobile phone microscopes, but this is the first time the technology has been used in the field to diagnose intestinal parasites,” said Isaac Bogoch, a physician at Toronto General Hospital.
Intestinal worms infect 2 billion people around the world, mainly children, sometimes causing malnutrition. The malady can be difficult to diagnose, in part because of the high cost of conventional microscopes, which are priced at around $200.
Scientists used the cell phone microscopes to evaluate some 200 stool samples from rural children infected with intestinal worms, and compared the results against findings obtained using a conventional microscope.
Overall, they found that the iPhone microscope was able to detect the presence of eggs deposited by worms in about 70 percent of the infected samples.