Jin Sook Yoon is a professor in the Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine. She had graduated Yonsei University and obtained PhD from Yonsei University. She was trained as an ophthalmology resident and fellow for oculoplasty subspecialty in Severance Hospital from 2001 until 2006. She is currently the chief of Pre-medical Department Affair in Yonsei University. She has published more than 110 SCI papers, notably regarding the mechanism and druggable targets in thyroid eye disease (Graves’ orbitopathy) using in vitro human orbital fibroblast cultures and tissues. She has studied in Mayo clinic, US with Dr. Garrity in 2007, and in UC San Diego, US with Dr. Kikkawa in 2021 for a year, each.