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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...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2015
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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. |
format | Online Article Text |
id | pubmed-4877718 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
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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