About Graham E. Trope Dr Graham E. Trope is Professor, Department of Ophthalmology, University of Toronto, and Director of the Glaucoma Unit at the University Health Network of Toronto. Books by Graham E. Trope Glaucoma A Patient's Guide to the Disease, Fourth Edition by (author) Graham E. Trope Glaucoma A Patient's Guide to the Disease, Fourth Edition by (author) Graham E. Trope