Jie Jin Wang has a long-standing research interest in the epidemiology of visual impairment and two common causes of visual impairment in older people: age-related macular degeneration (AMD) and age-related cataract. She is a key investigator of a population-based cohort study, the Blue Mountains Eye Study, and has expanded many research projects using this cohort data in collaboration with national and international researchers within a number of international consortia.