Prevalence and characteristics Of miopia in elementary school children in Badung District , 2018

Abstract

Introduction & Objectives
Refractive disorders are the second most common cause of blindness at all ages after cataracts and
are the leading cause of visual impairment in the world. The World The most common refractive
disorder in students especially in Asia is miopia. This study aims to determine the prevalence and
characteristics of miopia in elementary school children in Badung Regency, Bali.

Methods
This research is an observational with analytic cross-sectional study approach. Data were collected
prospectively in children in four elementary schools in Badung, Bali. To assess the relationship
between sex, age, history of wearing glasses in parents and duration of near work activity with
myopia using chi-square.

Results
The subjects were 1,067 students, consisting of 557 (52.2%) women and 510 (47.8%) men, the most
age was 9 years (19.1%), the average duration of near work activity was 83.79 ± 29, 46 hours/week,
152 students (14.24%) with refractive disorders and bilateral myopia were the most refractive
disorders (65.8%). Of the 150 students with miopia, 60% were female students, aged at most 11
years (28%), 90% of students had uncorrectedmiopia, 68% of parents of students without miopia,
mean near work activity was 81,71±23,30 hours / week. No significant relationship was found
between sex and age and the prevalence of myopia. Significant relationship was found between the
use of glasses in parents and the length of close-up activity with myopia with PR=7.35 (95% CI:
7.10-10.56) and PR=1.177 (95% CI 1.05-1.78).

Conclusion
There are differences in the characteristics of miopia in primary school students between urban and
remote areas and between developed and developing countries due to sociodemographic
differences, level of education, type of activity, income and culture.