Prevalence of Eye Diseases in Primary School Children in A Rural Area of Tanzania
Wedner, S.H., Ross, D.A., Balira, R., Kaji, L. and Foster, A.
British Journal of Ophthalmology
The purpose of this study was to determine the prevalence of eye diseases in primary school children aged 7 to 19.
This study was based on the survey conducted by teachers who examined 1438 pupils using a Snellen’s E chart.
Out of 1438 pupils, 10 (0.7%) had bilateral poor eyesight (visual acuity worse than 6/12).
An additional 14 pupils (1.0%) suffered from unilateral poor eyesight.
Overall, 76 pupils (5.5%) had active trachoma, though the prevalence was 15.5% in the poorest school.
Out of 1438 pupils, 73 (5.3%) reported night blindness, 8 (0.6%) had Bitot’s spots, and 11 (0.8%) had corneal scars.
Simple screening by teachers correctly identified 80% of the pupils who were found to have bilateral poor eyesight by the eye team, with 91% specificity.