Professor Clement C Tham is the Chairman, and SH Ho Professor, of Ophthalmology & Visual Sciences, at The Chinese University of Hong Kong (CUHK). He is the Immediate Past President of The College of Ophthalmologists of Hong Kong, which is the official professional organization in Hong Kong empowered to uphold and raise the standard of ophthalmic practice in Hong Kong through training, examinations, and accreditation.

Prof. Tham is a key leader in international ophthalmology. He has been the Secretary General and CEO of the Asia-Pacific Academy of Ophthalmology (APAO) since 2013. Over 118,000 ophthalmologists are practicing in the countries and regions represented by the 36 APAO Member Societies, which is over 51% of the total number of ophthalmologists in the world.

Prof. Tham is the immediate past Treasurer of the International Council of Ophthalmology (ICO), the largest ophthalmic professional society in the world with more than 180 national, regional, and subspecialty Member Societies from around the world.

The World Ophthalmology Congress (WOC) is the biennial conference of the ICO, with the widest international representation in the world. Prof. Tham was Chair of the Scientific Program Committees of WOC2016 in Mexico, and WOC2018 in Spain. More than 2000 distinguished experts from around the world participated in the scientific programs in each of these WOCs.

Prof. Tham is a world-renowned clinician scientist and key opinion leader in Glaucoma. Based on a PubMed-based algorithm, he is placed by Expertscape in the top 1% of scholars publishing on Glaucoma over the past 10 years. Prof. Tham is currently the President Elect of the Asia-Pacific Glaucoma Society, and was also a member of the Board of Governors of the World Glaucoma Association.