Education Doctor of Medicine : University of Ulsan Master of Medicine : Seoul Natioanl University Bachelor of Medicine : Seoul National University MajorProfessionalExperiences Korean academy of Science and Technology, Member Glaucoma Research Society, Member National Academy of Medicine of Korea, Member Chair of Asia pacific glaucoma Congress scientific program committee Director of Scientific Program, Korean Glaucoma Society National research foundation of Korea, Review board Professor of Ophthalmology in UUCM AMC Secretary general, Korean Glaucoma Society Director of Scientific Program, Korean Ophthalmologic Society Director of Scientific Program, Korean Glaucoma Society Chair of Department of Ophthalmology in UUCM AMC Director of Foreign affairs, Korean Glaucoma Society Associate Professor in UUCM AMC Asssistant Professor in UUCM AMC Research Fellow in University of Pittsburgh Chairman of Dr.Sung’s eye clinic, Gyung Sang Buk Do Fellowship in UUCM AMC Residency in UUCM AMC Internship in Seoul National University Hospital