Sudha Iyengar, PhD, (Left) and Loretta Szczotka-Flynn OD, PhD (Right) (IMAGE) Case Western Reserve University Caption More than 125 million people worldwide wear contact lenses, and while many are exposed to relatively common bacteria through their contact lenses, not all contract an eye infection. Researchers at the Case Western Reserve School of Medicine and University Hospitals (UH) Cleveland Medical Center will study whether a contact-wearer's genetics may play a role in who does or doesn't contract infection Credit Case Western Reserve University School of Medicine Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.