His research interests include basic mechanisms of human glaucoma (glial cell activation, neuroprotection), ocular imaging, clinical psychophysics, ocular blood flow and studies of vascular reactivity. Awards include Certificate of Merit for Research Excellence, Glaucoma Research Society of Canada; Claire Bobier Lecture, University of Waterloo; Springer Lecture, University of Alabama; the Glenn A Fry Award from the American Academy of Optometry; Outstanding Performance Award, University of Waterloo (2004 and 2013); Institute of Medical Science Mel Silverman Mentorship Award, Faculty of Medicine, University of Toronto, 2011; the Dario Lorenzetti Lecture, McGill Ophthalmology, 2013; and the Karen Walker-Brandreth Lecture, UC Berkeley, 2015.