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Year : 2020  |  Volume : 68  |  Issue : 8  |  Page : 1596-1599

Tribal Odisha Eye Disease Study (TOES) # 7. Prevalence of refractive error in children in tribal Odisha (India) school screening

L V Prasad Eye Institute, L V Prasad Marg, Banjara Hills, Hyderabad, Telangana, India

Correspondence Address:
Dr. Taraprasad Das
L V Prasad Eye Institute, L V Prasad Marg, Banjara Hills, Hyderabad - 500034, Telangana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijo.IJO_2020_19

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Purpose: To describe the prevalence of refractive error in school children in a tribal district, Rayagada, Odisha state, India. Methods: In a cross-sectional school eye health study, the students with diminished vision and other ocular abnormalities were referred for a further eye examination to the vision technicians after initial screening by the trained school teachers. The examination by vision technicians consisted of an external eye examination, photorefraction using a Spot screener and subjective correction. Those not improving with subjective correction were referred to the ophthalmologist for further examination. Results: The school teachers measured vision in 153,107 children; 5,990 students reached a vision technician. There was a near equal number of boys (50.06%) and girls (49.94%). The average age was 10.5 ± 2.63 (range: 5–15) years. The prevalence of refractive error was 9.7% (95% [CI]; 9.0–10.5%) in the vision technician-examined children. Myopia (4.9%) and astigmatism (5.4%) were more common than hyperopia (0.2%). The presenting visual acuity (PVA) was worse in children with hypermetropia (PVA 20/100-20/200 in 40% of children). Spherical equivalent of refractive error did not have a good correlation with age (R2 = 1.3); but increasing age was associated with increased risk of myopia (odds ratio 1.14; 95% CI 1.09–1.20; P < 0.001). Conclusion: The quantum of refractive error was close to other similar studies in India but the prevalence of myopia was relatively less.

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