Professor David Hui Kang Ma, MD, PHD is an ophthalmologist trained at the Graduate Institute of Clinical Medicine, College of Medicine, Chang-Gung University. He completed a postdoctoral fellowship in the Department of Ophthalmology at the University of California. He served as Director of the Limbal Stem Cell laboratory in the Department of Ophthalmology at the Chang-Gung Memorial Hospital, Linkou, Taiwan and is now Chairman of the Department of Ophthalmology. He is a member of the Association for Research in Vision and Ophthalmology (ARVO), the International Ocular Surface Society and the Asia Cornea Society.