Pornpattana Vichitvejpaisal, Chiang Mai University (image) American Academy of Ophthalmology Share Print E-Mail Caption Pornpattana Vichitvejpaisal, M.D., of Chiang Mai University, Thailand, led the research. Credit Pornpattana Vichitvejpaisal, M.D. Usage Restrictions None Share Print E-Mail 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.