Related Experiment Video
Updated: Jan 1, 2026

Subjective Refraction Test Using a Smartphone for Vision Screening
Published on: October 18, 2024
Visual impairment and unmet eye care needs among a Syrian pediatric refugee population in a Canadian city
Tarek Abdullah Bin Yameen1, Armin Abadeh2, Myrna Lichter3
1Faculty of Medicine, The University of Toronto, Toronto, Ont.; Department of Ophthalmology, St. Michael's Hospital, Toronto, Ont.
Objective:
To assess the ocular health status of Syrian pediatric refugees in Canada and report the prevalence of vision impairment within this population.
Design:
Cross-sectional descriptive study.
Participants:
Syrian refugees 18 years old or younger.
Methods:
Five clinic days were organized from July 2016 to November 2017 in Toronto, Ontario. A total of 274 patients were enrolled. Data collection involved surveys, vision screening, and ocular examinations. χ2 was used for statistical analysis.
Results:
The prevalence of uncorrected vision was 17.2% for distance, 4.7% for near, and 0.7% for both distance and near vision, including loss of vision. Of these, 95.3% had not visited an eye specialist in the past year, and 25.2% of parents were dissatisfied with their children's vision. The presenting visual acuity in the better-seeing eye was 20/50 or worse in 5.8% (95% confidence interval [CI] 3.6%-9.3%), and this did not correct with pinhole. This rate is 32 times (p < 0.01) higher than the prevalence rate in the average Canadian pediatric population (0.17%). Uncorrected refractive error prevalence was 26.3% (95% CI 21.2%-31.9%), with the most common etiology being myopia (19.7% CI 15.2%-24.9%). Myopia was 17.9 times (p < 0.0001) more prevalent among our Syrian refugee children compared with the average Canadian pediatric population (1.1%).
Conclusion:
Syrian pediatric refugees residing in Canada have a high prevalence of vision problems. Comprehensive vision screening, improved access to eye clinics, and developing evidence-based guidelines may help address the unmet eye care needs of this vulnerable population.
More Related Videos
05:10Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
Published on: March 17, 2023
09:29A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
Published on: February 11, 2014
Related Concept Videos
Photoreceptors and Visual Pathways
Focusing of Light in the Eye