Jason Porter, University of Houston (IMAGE) University of Houston Caption Jason Porter, assistant professor of vision science and biomedical engineering at the University of Houston, uses the AOSLO device to take sharper, higher-resolution images of the eye than current clinical instruments. The device helps him better understand the earliest changes of glaucoma. Credit Thomas Campbell 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.