Dr. Gui-shuang Ying is the Carolyn F. Jones Professor of Ophthalmology, the Director of the Center for Preventive Ophthalmology and Biostatistics, Department of Ophthalmology, the Associate Scholar in the Department of Biostatistics, Epidemiology and Informatics at Perelman School of Medicine, University of Pennsylvania. Dr. Ying has 24 years of experience in leading the data coordinating center for many large, multi-center NEI-funded clinical trials including the ongoing Glaucoma Drainage Device and Endothelial Cell Loss Compare Trial (DECLARE), the FLuorometholone as Adjunctive MEdical Therapy for TT Surgery (FLAME) Trial, and the successfully completed Telemedicine Approaches to Evaluating Acute-Phase ROP (e-ROP) Study, and the Postnatal Growth and Retinopathy of Prematurity (G-ROP) Study. Dr. Ying was the leading biostatistician for the Vision in Preschoolers (VIP) Study， Comparison of AMD Treatment Trials (CATT), the Dry Eye Evaluation and Management (DREAM) Study,  and PI of many secondary data analysis grants funded by NEI. Dr. Ying has authored or co-authored 450+ papers in peer-reviewed journals including the New England Journal of Medicine, Lancet, Cell, Pediatrics, Neurology, and Ophthalmology, etc. Dr. Ying is an Associate Editor-in-Chief for Ophthalmic Epidemiology, an Associate Editor for Translational Vision Science and Technology (TVST), the Retina/Vitreous Preferred Practice Pattern® Panel member, a Silver Fellow of ARVO, the grant reviewer for the National Institute of Health, Department of Defense and Medical Research Council. Dr. Ying is a dedicated advocator for using the proper study design and statistical analysis for ophthalmic trials/studies, as demonstrated by many tutorial papers and short courses that Dr. Ying leads. Dr. Ying received a Ph.D. in Biostatistics from the University of Pennsylvania, an M.S. in biostatistics from the University of Michigan, an MD in Preventive Medicine, and an MPH from Zhejiang University in China.