Refractive Errors and Amblyopia in Children Entering School: Shahrood, Iran
The purpose of this study was to determine the prevalence of amblyopia, strabismus, and refractive errors in children entering school.
In this cross-sectional population-based study, 6-year-old children enrolling in Shahrood schools were randomly sampled.
The prevalence of hyperopia (+2.00 D or worse), myopia (−0.50 D or worse), astigmatism (0.75 D or worse), and anisometropia (1.00 D or more) were 20.5, 1.7, 19.6, and 2.2%, respectively.
Overall, 52 children (6.4%; 95% confidence interval [CI], 4.7–8.1%) were at risk of amblyopia; of these, 81% had significant refractive errors, 11% had strabismus, and 8% had both.
The relatively high rate of hyperopia and astigmatism in the studied population needs more attention. The results of the study emphasize the need for adequate diagnostic and therapeutic eye care services for preschool children.