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The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran

PURPOSE: To determine the prevalence of refractive errors, among 6- to 15-year-old schoolchildren in the city of Dezful in western Iran. METHODS: In this cross-sectional study, 1375 Dezful schoolchildren were selected through multistage cluster sampling. After obtaining written consent, participants...

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Autores principales: Norouzirad, Reza, Hashemi, Hassan, Yekta, Abbasali, Nirouzad, Fereidon, Ostadimoghaddam, Hadi, Yazdani, Negareh, Dadbin, Nooshin, Javaherforoushzadeh, Ali, Khabazkhoob, Mehdi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4877718/
https://www.ncbi.nlm.nih.gov/pubmed/27239576
http://dx.doi.org/10.1016/j.joco.2015.09.008
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author Norouzirad, Reza
Hashemi, Hassan
Yekta, Abbasali
Nirouzad, Fereidon
Ostadimoghaddam, Hadi
Yazdani, Negareh
Dadbin, Nooshin
Javaherforoushzadeh, Ali
Khabazkhoob, Mehdi
author_facet Norouzirad, Reza
Hashemi, Hassan
Yekta, Abbasali
Nirouzad, Fereidon
Ostadimoghaddam, Hadi
Yazdani, Negareh
Dadbin, Nooshin
Javaherforoushzadeh, Ali
Khabazkhoob, Mehdi
author_sort Norouzirad, Reza
collection PubMed
description PURPOSE: To determine the prevalence of refractive errors, among 6- to 15-year-old schoolchildren in the city of Dezful in western Iran. METHODS: In this cross-sectional study, 1375 Dezful schoolchildren were selected through multistage cluster sampling. After obtaining written consent, participants had uncorrected and corrected visual acuity tests and cycloplegic refraction at the school site. Refractive errors were defined as myopia [spherical equivalent (SE) −0.5 diopter (D)], hyperopia (SE ≥ 2.0D), and astigmatism (cylinder error > 0.5D). RESULTS: 1151 (83.7%) schoolchildren participated in the study. Of these, 1130 completed their examinations. 21 individuals were excluded because of poor cooperation and contraindication for cycloplegic refraction. Prevalence of myopia, hyperopia, and astigmatism were 14.9% (95% confidence interval (CI): 10.1–19.6), 12.9% (95% CI: 7.2–18.6), and 45.3% (95% CI: 40.3–50.3), respectively. Multiple logistic regression analysis showed an age-related increase in myopia prevalence (p << 0.001) and a decrease in hyperopia prevalence (p << 0.001). There was a higher prevalence of myopia in boys (p<<0.001) and hyperopia in girls (p = 0.007). CONCLUSION: This study showed a considerably high prevalence of refractive errors among the Iranian population of schoolchildren in Dezful in the west of Iran. The prevalence of myopia is considerably high compared to previous studies in Iran and increases with age.
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spelling pubmed-48777182016-05-27 The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran Norouzirad, Reza Hashemi, Hassan Yekta, Abbasali Nirouzad, Fereidon Ostadimoghaddam, Hadi Yazdani, Negareh Dadbin, Nooshin Javaherforoushzadeh, Ali Khabazkhoob, Mehdi J Curr Ophthalmol Article PURPOSE: To determine the prevalence of refractive errors, among 6- to 15-year-old schoolchildren in the city of Dezful in western Iran. METHODS: In this cross-sectional study, 1375 Dezful schoolchildren were selected through multistage cluster sampling. After obtaining written consent, participants had uncorrected and corrected visual acuity tests and cycloplegic refraction at the school site. Refractive errors were defined as myopia [spherical equivalent (SE) −0.5 diopter (D)], hyperopia (SE ≥ 2.0D), and astigmatism (cylinder error > 0.5D). RESULTS: 1151 (83.7%) schoolchildren participated in the study. Of these, 1130 completed their examinations. 21 individuals were excluded because of poor cooperation and contraindication for cycloplegic refraction. Prevalence of myopia, hyperopia, and astigmatism were 14.9% (95% confidence interval (CI): 10.1–19.6), 12.9% (95% CI: 7.2–18.6), and 45.3% (95% CI: 40.3–50.3), respectively. Multiple logistic regression analysis showed an age-related increase in myopia prevalence (p << 0.001) and a decrease in hyperopia prevalence (p << 0.001). There was a higher prevalence of myopia in boys (p<<0.001) and hyperopia in girls (p = 0.007). CONCLUSION: This study showed a considerably high prevalence of refractive errors among the Iranian population of schoolchildren in Dezful in the west of Iran. The prevalence of myopia is considerably high compared to previous studies in Iran and increases with age. Elsevier 2015-11-06 /pmc/articles/PMC4877718/ /pubmed/27239576 http://dx.doi.org/10.1016/j.joco.2015.09.008 Text en © 2015 Iranian Society of Opthalmology. Production and hosting by Elsevier B.V. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Article
Norouzirad, Reza
Hashemi, Hassan
Yekta, Abbasali
Nirouzad, Fereidon
Ostadimoghaddam, Hadi
Yazdani, Negareh
Dadbin, Nooshin
Javaherforoushzadeh, Ali
Khabazkhoob, Mehdi
The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title_full The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title_fullStr The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title_full_unstemmed The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title_short The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran
title_sort prevalence of refractive errors in 6- to 15-year-old schoolchildren in dezful, iran
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4877718/
https://www.ncbi.nlm.nih.gov/pubmed/27239576
http://dx.doi.org/10.1016/j.joco.2015.09.008
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