Abstract :
Aim: To estimate the prevalence of ocular morbidity and impact of digital display devices among school
children attending Air Force school in Delhi.
Materials and Methods: This was a descriptive cross-sectional study using a quantitative method of data
collection and was conducted among primary school children of age group 5-11years in Delhi area. A total
of 1100 school-going children were evaluated. After enumeration and questionnaire administration, visual
acuity and exposure time of digital display devices noted, followed by examination of anterior and posterior
segment structures of the eyes of the children. For the analysis, children were divided into 3 groups: Group
1 (5-7 years), Group 2 (8-10 years) and Group 3 (below 11 years) based on age.
Results: A total of 1100 school children (625 boys and 475 girls) participated in the study. A total of 282
(25.6%) children had visual impairment and 315 (28.6%) children had ocular morbidities. The common
ocular morbidities identified were refractive error 25.6%, colour vision defective 0.9%, convergence defect
1.8% and squint 0.2%. The older age group (8-10 yrs) had a higher prevalence of refractive error, especially
myopia, compared to the younger age group (5-7 yrs) and group (
Conclusion: A high prevalence of ocular morbidity among school children of age group 8-10 yrs was
observed with a positive correlation with exposure time to digital display devices. Refractive errors were
the most common ocular disorders.
Keyword :
Ocular morbidity, Refractive error, School children Digital display.
devices