Dr Leonard Ong graduated from the University of Sydney (MB.BS, Hons) and completed general residency years at Concord Hospital. He then undertook a Master of Public Health at Sydney University in 1999. His first three years of specialist ophthalmology training was at the Sydney Eye Hospital and associated hospitals, followed by a year at Townsville Hospital in North Queensland where he became a Fellow of the Royal Australian and New Zealand College of Ophthalmologists in 2003.

Dr Ong is currently a Clinical Lecturer in Ophthalmology at the Faculty of Medicine and Health Sciences at Macquarie University.

In his spare time, he likes to read a good book and spend time with family and friends.