Researchers say they have evidence that an experimental drug may prevent or slow vision loss in people with diabetes. CU Department of Ophthalmology faculty Miguel Flores-Bellver, PhD, and Maria Valeria Canto-Soler, PhD, contributed to the study with other researchers, finding a compound called 32-134D, previously shown to slow liver tumor growth in mice, prevented diabetic retinal vascular disease by decreasing levels of a protein called HIF, or hypoxia-inducible factor.