Dr Loon Seng Chee is a senior consultant with sub-specialist training in glaucoma at the National University Hospital. He is also head of the glaucoma service.

Dr Loon's specialty is in performing laser and surgery for glaucoma as well as cataract surgery. He has special interests in the epidemiology and development of glaucoma, imaging in glaucoma and in particular, the optic nerve. He also specialises in looking at the epidemiology of eye diseases, using the skills of research in applying the latest technologies in treatment whilst ensuring safety and efficacy in treatment.

Dr Loon received his basic training in Singapore, with specialist degrees conferred from the National University of Singapore and also specialist degrees from Edinburgh. He underwent further fellowship and training in Sydney, Australia, where he did his advanced glaucoma and cataract training. Dr Loon also acquired a second Masters of Medicine (Merit) in Clinical Epidemiology from Sydney University.

Dr Loon won a gold medal in Ophthalmology as a student and has received grants for his research. He has undertaken the Singapore Malay Eye Study and the Singapore Cohort Myopia Study, and was awarded travel grants for his research work in Sydney when he was on a glaucoma fellowship.

Dr Loon is the Assistant Research Director in the Department of Ophthalmology, NUH, and has publications in major journals, with works in glaucoma, imaging, epidemiology and also the optic nerve head.

Dr Loon is also keen in medical outreach, and has done medical mission work in Bangladesh, China, Indonesia and Nepal. He does an average of two trips to such places a year with like-minded friends and colleagues. He has also been teaching glaucoma surgery to doctors in countries such as China. In 2011, he was conferred the Humanity Award by President Nathan for his work in medical mission work.