Prevalence and associated factors of visual impairment among adults at Debre Berhan Town, North Shewa, Ethiopia

Introduction: Visual impairment refers to presenting distance visual acuity worse than 6/18 in either or both eyes. Globally 285 million (4.25%) people had visual impairment and among those 266.4 million were adults. It has become a global challenge that greatly affects the mobility, social participation and the quality of life of the people.

Purpose: The purpose of this study was to determine the prevalence and associated factors of visual impairment among adults at Debre Berhan town. Methods and materials: A community-based cross sectional study was conducted at Debre Berhan town. Data was collected by interview with pre-tested semi structured questionnaire and ocular examinations. The collected data were analyzed by SPSS version 20. Multivariate logistic regression was used to identify the determinant factors and p value less than 0.05 was considered as statistically significant.

Result: A total of 416 participants were involved in the study with a 98.6% response rate. The prevalence of visual impairment among adults was 16.8% (95% CI: 13.5%-20.2%). Age 40-60years (AOR: 3.04, 95% CI: 1.22-7.58), age>64 years (AOR=12.18, 95%CI: 4.47-33.20), illiterate (AOR=3.02, 95% CI: 1.36-6.72), previous eye trauma (AOR=4.44, 95% CI: 1.64-12.04), family size >5 (AOR: 4.44, 95% CI: 1.43-13.75) and family history of eye problem (AOR=7.02, 95% CI: 1.95-25.22) had statistically significant association with visual impairment.

Conclusion: Prevalence of visual impairment among adults was found to be a significant public health problem. Older age, illiterate, previous eye trauma, large family size and family history eye problem were positively associated with visual impairment.