Prevalence rate of myopia in schoolchildren in rural Mongolia

Andrew Morgan, Richard Young, Battseren Narankhand, Stephanie Chen, Charles Cottriall, Sarah Hosking

Research output: Contribution to journalArticle

Abstract

PURPOSE. The prevalence of myopia among some young Asian populations has been reported to be increasing to near epidemic proportions. Mongolia is an emerging Asian economy with limited ophthalmic resources. The purpose of this study was to define a level of myopia for school-aged children in rural Mongolia. METHODS. A total of 1057 schoolchildren, aged between 7 and 17 years, were examined in two remote, rural suums (districts) of Mongolia: one situated in the western aimag (province) of Khovd and the other in the central steppe's aimag of Zavkhan. The examination included retinoscopy, subjective refraction, best-corrected visual acuity, and direct ophthalmoscopy. RESULTS. The total prevalence of myopia (more than -0.5 D spherical equivalent) was 5.8% (95% confidence intervals [CIs], 4.4-7.2%). Female students exhibited a significantly higher prevalence of myopia in comparison to male students: 8.3% (95% CIs, 6.0-10.6%) compared with 3.1%, respectively (95% CIs, 1.6-4.6%): p < 0.001). For those with myopia, the median level of myopia for both genders was -0.75 D spherical equivalent (SE) and ranged from -0.50 to -28.00 D SE in girls and from -0.50 to -6.50 D SE in boys. CONCLUSIONS. To the authors' knowledge, this is the first study to report a level of myopia for schoolchildren in Mongolia. The prevalence rate is low in comparison to reported studies for other Far Eastern countries.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalOptometry and Vision Science
Volume83
Issue number1
DOIs
Publication statusPublished - 1 Jan 2006

Fingerprint

Mongolia
Myopia
Confidence Intervals
Retinoscopy
Students
Ophthalmoscopy
Visual Acuity

Keywords

  • Mongolia
  • Myopia
  • Prevalence rate
  • Refractive error
  • Schoolchildren

Cite this

Morgan, A., Young, R., Narankhand, B., Chen, S., Cottriall, C., & Hosking, S. (2006). Prevalence rate of myopia in schoolchildren in rural Mongolia. Optometry and Vision Science, 83(1), 53-56. https://doi.org/10.1097/01.opx.0000195567.88641.af
Morgan, Andrew ; Young, Richard ; Narankhand, Battseren ; Chen, Stephanie ; Cottriall, Charles ; Hosking, Sarah. / Prevalence rate of myopia in schoolchildren in rural Mongolia. In: Optometry and Vision Science. 2006 ; Vol. 83, No. 1. pp. 53-56.
@article{a5841b3f50ce4e399e70a2fcad4e5ddc,
title = "Prevalence rate of myopia in schoolchildren in rural Mongolia",
abstract = "PURPOSE. The prevalence of myopia among some young Asian populations has been reported to be increasing to near epidemic proportions. Mongolia is an emerging Asian economy with limited ophthalmic resources. The purpose of this study was to define a level of myopia for school-aged children in rural Mongolia. METHODS. A total of 1057 schoolchildren, aged between 7 and 17 years, were examined in two remote, rural suums (districts) of Mongolia: one situated in the western aimag (province) of Khovd and the other in the central steppe's aimag of Zavkhan. The examination included retinoscopy, subjective refraction, best-corrected visual acuity, and direct ophthalmoscopy. RESULTS. The total prevalence of myopia (more than -0.5 D spherical equivalent) was 5.8{\%} (95{\%} confidence intervals [CIs], 4.4-7.2{\%}). Female students exhibited a significantly higher prevalence of myopia in comparison to male students: 8.3{\%} (95{\%} CIs, 6.0-10.6{\%}) compared with 3.1{\%}, respectively (95{\%} CIs, 1.6-4.6{\%}): p < 0.001). For those with myopia, the median level of myopia for both genders was -0.75 D spherical equivalent (SE) and ranged from -0.50 to -28.00 D SE in girls and from -0.50 to -6.50 D SE in boys. CONCLUSIONS. To the authors' knowledge, this is the first study to report a level of myopia for schoolchildren in Mongolia. The prevalence rate is low in comparison to reported studies for other Far Eastern countries.",
keywords = "Mongolia, Myopia, Prevalence rate, Refractive error, Schoolchildren",
author = "Andrew Morgan and Richard Young and Battseren Narankhand and Stephanie Chen and Charles Cottriall and Sarah Hosking",
year = "2006",
month = "1",
day = "1",
doi = "10.1097/01.opx.0000195567.88641.af",
language = "English",
volume = "83",
pages = "53--56",
journal = "Optometry and Vision Science",
issn = "1040-5488",
publisher = "Lippincott Williams and Wilkins",
number = "1",

}

Morgan, A, Young, R, Narankhand, B, Chen, S, Cottriall, C & Hosking, S 2006, 'Prevalence rate of myopia in schoolchildren in rural Mongolia', Optometry and Vision Science, vol. 83, no. 1, pp. 53-56. https://doi.org/10.1097/01.opx.0000195567.88641.af

Prevalence rate of myopia in schoolchildren in rural Mongolia. / Morgan, Andrew; Young, Richard; Narankhand, Battseren; Chen, Stephanie; Cottriall, Charles; Hosking, Sarah.

In: Optometry and Vision Science, Vol. 83, No. 1, 01.01.2006, p. 53-56.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Prevalence rate of myopia in schoolchildren in rural Mongolia

AU - Morgan, Andrew

AU - Young, Richard

AU - Narankhand, Battseren

AU - Chen, Stephanie

AU - Cottriall, Charles

AU - Hosking, Sarah

PY - 2006/1/1

Y1 - 2006/1/1

N2 - PURPOSE. The prevalence of myopia among some young Asian populations has been reported to be increasing to near epidemic proportions. Mongolia is an emerging Asian economy with limited ophthalmic resources. The purpose of this study was to define a level of myopia for school-aged children in rural Mongolia. METHODS. A total of 1057 schoolchildren, aged between 7 and 17 years, were examined in two remote, rural suums (districts) of Mongolia: one situated in the western aimag (province) of Khovd and the other in the central steppe's aimag of Zavkhan. The examination included retinoscopy, subjective refraction, best-corrected visual acuity, and direct ophthalmoscopy. RESULTS. The total prevalence of myopia (more than -0.5 D spherical equivalent) was 5.8% (95% confidence intervals [CIs], 4.4-7.2%). Female students exhibited a significantly higher prevalence of myopia in comparison to male students: 8.3% (95% CIs, 6.0-10.6%) compared with 3.1%, respectively (95% CIs, 1.6-4.6%): p < 0.001). For those with myopia, the median level of myopia for both genders was -0.75 D spherical equivalent (SE) and ranged from -0.50 to -28.00 D SE in girls and from -0.50 to -6.50 D SE in boys. CONCLUSIONS. To the authors' knowledge, this is the first study to report a level of myopia for schoolchildren in Mongolia. The prevalence rate is low in comparison to reported studies for other Far Eastern countries.

AB - PURPOSE. The prevalence of myopia among some young Asian populations has been reported to be increasing to near epidemic proportions. Mongolia is an emerging Asian economy with limited ophthalmic resources. The purpose of this study was to define a level of myopia for school-aged children in rural Mongolia. METHODS. A total of 1057 schoolchildren, aged between 7 and 17 years, were examined in two remote, rural suums (districts) of Mongolia: one situated in the western aimag (province) of Khovd and the other in the central steppe's aimag of Zavkhan. The examination included retinoscopy, subjective refraction, best-corrected visual acuity, and direct ophthalmoscopy. RESULTS. The total prevalence of myopia (more than -0.5 D spherical equivalent) was 5.8% (95% confidence intervals [CIs], 4.4-7.2%). Female students exhibited a significantly higher prevalence of myopia in comparison to male students: 8.3% (95% CIs, 6.0-10.6%) compared with 3.1%, respectively (95% CIs, 1.6-4.6%): p < 0.001). For those with myopia, the median level of myopia for both genders was -0.75 D spherical equivalent (SE) and ranged from -0.50 to -28.00 D SE in girls and from -0.50 to -6.50 D SE in boys. CONCLUSIONS. To the authors' knowledge, this is the first study to report a level of myopia for schoolchildren in Mongolia. The prevalence rate is low in comparison to reported studies for other Far Eastern countries.

KW - Mongolia

KW - Myopia

KW - Prevalence rate

KW - Refractive error

KW - Schoolchildren

UR - http://www.scopus.com/inward/record.url?scp=33644833551&partnerID=8YFLogxK

UR - https://insights.ovid.com/crossref?an=00006324-200601000-00014

U2 - 10.1097/01.opx.0000195567.88641.af

DO - 10.1097/01.opx.0000195567.88641.af

M3 - Article

VL - 83

SP - 53

EP - 56

JO - Optometry and Vision Science

JF - Optometry and Vision Science

SN - 1040-5488

IS - 1

ER -

Morgan A, Young R, Narankhand B, Chen S, Cottriall C, Hosking S. Prevalence rate of myopia in schoolchildren in rural Mongolia. Optometry and Vision Science. 2006 Jan 1;83(1):53-56. https://doi.org/10.1097/01.opx.0000195567.88641.af