Doctor of Philosophy, Chonnam National University, Kwangju, Korea, 1996.
Director department ophthalmology Chonnam National University Hospital, Kwangju, since 1995. Postdoctoral fellow Johns Hopkins School Medicine and Hospital, Baltimore, 1997—1999. Deputy official The First AERO Medical Battle Corps, 1989-1992, Kwangju, Korea.
Member of Korea Retina Society (director since 1998), Korean Ophthalmol. Society (committee member since 2001), Vitreous Society, American Academy Ophthalmology, Association for Research in Vision and Ophthalmology.
Married Hyeon Ju Nah. Children: Jee-Hyeon, Jang-House.