Professor and Chief, Department of Plastic SurgeryCatholic University of Daegu, Korea from 1988Director, Tissue Engineering Center from 2005Director, Oculoplastic and Aesthetic Clinic from 1991Visiting professor, Henan University of Traditional Chinese Medicine, Zhenzhou, China from 2005 Visiting professor, Southern Medical University, Kwangzhou, China from 2008National Secretary of Korea of ISAPS (International Society of Aesthetic Plastic Surgery) from 2012 Educational Council member of ISAPS from 2010 to 2012Oculoplastic Section Editor of Aesthetic Plast. Sur. J. from 2012 Advisoy Board of Aesthetic Plast. Sur. J. from 2012 Editorial Board of KSAPS from 2007 to 2011Guest Reviewer, Plastic and Reconstructive Surgery from 2006President of Younghonam Society of KSPRS from 2011President of Daegyoung Wound Healing Society from 2006Editorial board and board of directors of KSPRS from 2004 to 2010Founder of KAOPS(Korean Academy of Oculoplastic Surgery) from 2004President of KAOPS from 2004 to 2008Trained 40 foreign fellows form 10 countries and 30 board certified Korean plastic surgeon Published over 150 scientific papers in the field of plastic surgery ,30 SCI journals about Asian blepharoplasty and oculoplastic surgeryWrote 10 books and 20 book chapters about Asian blepharoplasty and oculoplastic surgery published in USA, China and Korea1th 2th 3th edition of Oculoplastic Surgery and Chinese version(2009)