Researchers discovered that ethoxzolamide, a sulfa-based compound found in many prescription glaucoma drugs, actually turns off the bacterium's ability to invade the immune system. In a breakthrough discovery, Robert Abramovitch, a Michigan State University microbiologist, along with a graduate student have suggested that a common medication used to treat glaucoma could also be used to treat tuberculosis (TB). The study has been published in Antimicrobial Agents and Chemotherapy.