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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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2015-03-01
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| Series: | Journal of Current Ophthalmology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2452232515000098 |
| _version_ | 1819181134387347456 |
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| author | Reza Norouzirad Hassan Hashemi Abbasali Yekta Fereidon Nirouzad Hadi Ostadimoghaddam Negareh Yazdani Nooshin Dadbin Ali Javaherforoushzadeh Mehdi Khabazkhoob |
| author_facet | Reza Norouzirad Hassan Hashemi Abbasali Yekta Fereidon Nirouzad Hadi Ostadimoghaddam Negareh Yazdani Nooshin Dadbin Ali Javaherforoushzadeh Mehdi Khabazkhoob |
| author_sort | Reza Norouzirad |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-22T22:25:24Z |
| format | Article |
| id | doaj.art-d7b2bd060535437d92aee5503a8b516c |
| institution | Directory Open Access Journal |
| issn | 2452-2325 |
| language | English |
| last_indexed | 2024-12-22T22:25:24Z |
| publishDate | 2015-03-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Current Ophthalmology |
| spelling | doaj.art-d7b2bd060535437d92aee5503a8b516c2022-12-21T18:10:34ZengWolters Kluwer Medknow PublicationsJournal of Current Ophthalmology2452-23252015-03-01271515510.1016/j.joco.2015.09.008The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, IranReza Norouzirad0Hassan Hashemi1Abbasali Yekta2Fereidon Nirouzad3Hadi Ostadimoghaddam4Negareh Yazdani5Nooshin Dadbin6Ali Javaherforoushzadeh7Mehdi Khabazkhoob8Dezful University of Medical Sciences, Dezful, IranNoor Ophthalmology Research Center, Noor Eye Hospital, Tehran, IranDepartment of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, IranDezful University of Medical Sciences, Dezful, IranRefractive Errors Research Center, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, IranDepartment of Optometry, School of Paramedical Sciences, Mashhad University of Medical Sciences, Mashhad, IranNoor Research Center for Ophthalmic Epidemiology, Noor eye hospital, Tehran, IranNoor Research Center for Ophthalmic Epidemiology, Noor eye hospital, Tehran, IranDepartment of Epidemiology, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, IranPurpose: 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.http://www.sciencedirect.com/science/article/pii/S2452232515000098Refractive errorsChildrenEpidemiologyMiddle-east |
| spellingShingle | Reza Norouzirad Hassan Hashemi Abbasali Yekta Fereidon Nirouzad Hadi Ostadimoghaddam Negareh Yazdani Nooshin Dadbin Ali Javaherforoushzadeh Mehdi Khabazkhoob The prevalence of refractive errors in 6- to 15-year-old schoolchildren in Dezful, Iran Journal of Current Ophthalmology Refractive errors Children Epidemiology Middle-east |
| 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 | Refractive errors Children Epidemiology Middle-east |
| url | http://www.sciencedirect.com/science/article/pii/S2452232515000098 |
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