Paul has made significant contributions in the fields of public health and ophthalmic epidemiology via the landmark Blue Mountains Eye Study (BMES), with papers in all major eye journals, as well as leading medical journals, including NEJM and Lancet. He has also conducted considerable research into childhood eye conditions via the Sydney Childhood Eye Study (SCES).
He has co-authored over 920 papers in peer-reviewed journals and 75 books, chapters or letters. To date he has supervised 24 completed PhD students as supervisor and a further 11 as associate supervisor. For the first 9 months of this year, he has been the most cited ophthalmologist for 3 of these months. He currently has 39,000 citations to his work. Total career research funding exceeds $27 million. He is involved in many Australian and International collaborative studies, including large-scale genetic and population pooling projects.