Bird (IMAGE) Virginia Tech Caption This image shows the inert fluorescent powder placed around the eyes of birds to measure how well they "spread" the powder while infected with conjunctivitis. Photo courtesy of Dana Hawley. Credit Virginia Tech Usage Restrictions Credit Virginia Tech License Original 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.