Professor, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong

Head, Undergraduate Division, Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong

Dean of General Education, Chung Chi College, CUHK

Director, CUHK Jockey Club Myopia Prevention Programme

Head and Honorary Consultant, Pediatric Ophthalmology and Strabismus Service, Hong Kong Eye Hospital

Head and Honorary Consultant, Ophthalmology Service, Hong Kong Children′s Hospital

Honorary Consultant, New Territories East Cluster Ophthalmology Service, Prince of Wales Hospital

Professor and Chairperson of theDepartment of Ophthalmology 

Visual Science at Tokyo Medical and Dental

University(TMDU),

Chief of the Advanced Clinical Center for Myopia at TMDU.

Professor of Ophthalmic Epidemiology

Melbourne Medical School

Faculty of Medicine, Dentistry and Health Sciences

University of Melbourne

Head of Ophthalmic Epidemiology

Centre for Eye Research Australia

Sun Yat-sen University Zhongshan Ophthalmic Center

Guangzhou, China

Professor (Full) & Vice-director

Deputy Director, Professor, Doctoral Supervisor, Chief Physician, Department of Optometry, Zhongshan Ophthalmic Center, Sun Yat-sen University

Graduated from Sun Yat-sen Medical University, 1984

PhD in Biomedical Sciences, Meharry Medical College, USA, 1993

Postdoctoral Research Fellow, Ophthalmology Center, University of Louisville, USA

Former Assistant Professor, USA

Participant of Research Projects, National Eye Institute (NIH), USA

Member, American Academy of Ophthalmology (AAO)

Member, Association for Research in Vision and Ophthalmology (ARVO)