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Updated: Sep 24, 2025
07:06
Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
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[Myopia and Myopic Astigmatism in school-children]
Magdalena Bastías G1, Rodolfo Villena M2, Jocelyn Dunstan E3
1Santiago, Santiago, Chile.
Andes Pediatrica : Revista Chilena De Pediatria
|May 4, 2022
Summary
Myopia and myopic astigmatism are increasing in Chilean schoolchildren, particularly higher diopter levels. Increased outdoor time may be a protective factor against myopia progression in children.
Area of Science:
- Ophthalmology
- Public Health
- Pediatrics
Background:
- Global epidemic of myopia, particularly in children.
- Lack of natural light exposure is a suspected contributing factor.
- Myopia prevalence in Chilean children was previously unknown.
Purpose of the Study:
- To estimate the prevalence and trends of myopia and myopic astigmatism.
- Focus on 1st and 6th-grade students in Chile's public education system.
Main Methods:
- Ecological study utilizing diagnostic data from 2012-2018.
- Analysis of prevalence by region and sex.
- Statistical methods included Chi2, logistic, and linear regression.
Main Results:
- Heterogeneous geographical distribution of myopia and myopic astigmatism.
- Significant annual increases in myopia and myopic astigmatism (≥ 3 diopters) in both 1st and 6th graders.
- Decreases observed in lower diopter myopia and myopic astigmatism.
Conclusions:
- Myopia and high myopic astigmatism are increasing in Chilean schoolchildren.
- Evidence supports the protective role of natural light exposure.
- Recommendations for increased outdoor time for children are warranted.
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