Visual Impairment among Primary School Children in Gondar Town, Northwest Ethiopia.

Background: An impairment of the visual system at or shortly after birth adversely affects educational performance of children which typically occurs through vision. Limited evidence on the magnitude and causes of visual impairment is one of the reasons for the low priority given to eye care in low-income countries.

Objectives: To estimate the prevalence and determine the causes of visual impairment in primary school children in Gondar town, Northwest Ethiopia.

Materials And Methods: A descriptive cross-sectional study was conducted among 1289 children aged 5-15 years who were randomly selected in 9 primary schools (government and private) from May to June 2016. Visual acuity was measured at 6 m using Snellen's chart, and children with an acuity of less than 6/18 in the better eye underwent refraction and a detailed eye examination. A cause of their impairment was determined. Data were recorded using pretested tools. . Statistical Package for Social Sciences version 16 was used to enter and analyze the data using 95% confidence intervals.

Results: The prevalence of visual impairment was 1.8%. Refractive errors (nearly 70%) followed by strabismus and cataract, each contributing 4.3%, were the most frequent causes of visual impairment in the study population. Majority (87%) of the children had moderate degree of vision impairment, and 10-15-year age groups are the more affected ones. Children of age fifteen and above showed statistically significant association with visual impairment (=0.005).

Conclusion: The magnitude of visual impairment in primary school children in the study area is significant. School screening programme is recommended to minimize the burden of visual impairment in the study area.