Look into one’s eye and you might be able to see their soul—or at least you can see signs of a stroke or diabetes. By looking at the blood vessels in the eyes, doctors can tell a lot about a person’s health. This can be done using fundus photography, which has been around for almost two centuries and is the standard imaging tool used by ophthalmologists. However, for many, especially the poor, traveling to a clinic is not practical. Researchers at the Nara Institute of Science and Technology (NAIST), in partnership with scientists at the University of Tokyo, have devised a new fundus camera small enough to fit on a smartphone that could get around this problem. The study was described at the 2018 Symposia on VLSI Technology and Circuits this month.