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Updated: Nov 1, 2025

Author Spotlight: Understanding Retinal Vessel Resilience and Disease Progression
Published on: January 12, 2024
Sociodemographics Associated With Risk of Diabetic Retinopathy Detected by Tele-Ophthalmology: 5-Year Results of the
Jessica Cao1, Tina Felfeli2, Rebecca Merritt3
1Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
Objectives:
Our aim in this study was to describe screening outcomes and sociodemographic characteristics of patients in an urban tele-ophthalmology screening program for diabetic retinopathy (DR).
Methods:
A prospective cohort study was conducted on adults with diabetes type 1 or type 2 enrolled in the Toronto Tele-Retinal Screening Program between September 2013 and March 2019.
Results:
A total of 1,374 screenings were completed, of which 344 (25%) detected DR. Of all participants, 17% did not have provincial health coverage and 21% had never had an eye exam. Of the 587 patients who completed sociodemographic questionnaires, the majority (84%) were born outside of Canada, and only 62% preferred English as their spoken language. Forty percent reported a household income of <$25,000, with these participants having an increased likelihood of detectable DR (odds ratio [OR], 1.83; p<0.01).
Conclusions:
Participants with low income are more likely to screen positive for DR. Tele-ophthalmologic screening can be effective in an urban, culturally diverse and socioeconomically disadvantaged population.

