 In 1963 he became an associate professor at the University of British Columbia in Vancouver.It was at this university in 1966, that he gained the position of professor and in 1973 head of the Department of Ophthalmology, which he held until his retirement in 1990.Drance has more than 300 contributions to the glaucoma literature spanning half a century and address every conceivable aspect of the disease, along with being the co-author of five books.