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Article: Prevalence and associations of myopia in Hong Kong primary school students

TitlePrevalence and associations of myopia in Hong Kong primary school students
Authors
KeywordsRefractive error
Myopia
Hyperopia
Paediatric ophthalmology
Issue Date2020
PublisherSpringer Japan. The Journal's web site is located at http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-10074-70-18952714-0,00.html
Citation
Japanese Journal of Ophthalmology, 2020, v. 64 n. 4, p. 437-449 How to Cite?
AbstractPurpose: To examine the prevalence of myopia in primary school children in Hong Kong, and the risk factors for myopia development. Study design: A cross-sectional study. Methods: Subjective refraction and axial length were measured in all participants. Structured questionnaire was completed by the parents to assess risk factors of myopia. Results: A total of 1396 children (491 boys) from Grade 1 to Grade 6 from 4 primary schools in Sham Shui Po district of Hong Kong participated. All participants underwent non-cycloplegic refraction. The overall prevalence of myopia (spherical equivalent, SE ≤ -0.5 diopter [D]) was 37.7%, which significantly increased with age, from 13.3% at grade 1 to 54.7% at grade 6. The prevalence of moderate myopia (-3.0D < SE < -6.0D) increased from 1.6% at grade 1 to 18.2% at grade 6 and the prevalence of high myopia (SE < = -6.0 D and/or AL ≥ 26.5 mm) increased from 0.94% (7/747) in grade 1-3 students to 1.85% (12/649) in grade 4-6 students. Among the students with myopia, only 23.6% of the parents knew their children had refractive errors and only 19.8% of the children wore glasses. Multivariate logistic regression analysis showed myopia development was significantly associated with older age (OR = 1.36, P = 0.008), better academic ranking in class in the preceding semester (OR = 1.01, P = 0.02) and absence of routine eye check (OR = 2.70, P = 0.001). Conclusion: The prevalence of myopia in primary school students in Hong Kong is high. There is a low level of awareness of refractive errors among parents, and high proportion of under-correction, resulting in suboptimal vision.
Persistent Identifierhttp://hdl.handle.net/10722/285428
ISSN
2019 Impact Factor: 1.725
2015 SCImago Journal Rankings: 1.096
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChoy, BNK-
dc.contributor.authorYou, Q-
dc.contributor.authorZhu, MM-
dc.contributor.authorLai, JSM-
dc.contributor.authorNg, ALK-
dc.contributor.authorWong, IYH-
dc.date.accessioned2020-08-18T03:53:19Z-
dc.date.available2020-08-18T03:53:19Z-
dc.date.issued2020-
dc.identifier.citationJapanese Journal of Ophthalmology, 2020, v. 64 n. 4, p. 437-449-
dc.identifier.issn0021-5155-
dc.identifier.urihttp://hdl.handle.net/10722/285428-
dc.description.abstractPurpose: To examine the prevalence of myopia in primary school children in Hong Kong, and the risk factors for myopia development. Study design: A cross-sectional study. Methods: Subjective refraction and axial length were measured in all participants. Structured questionnaire was completed by the parents to assess risk factors of myopia. Results: A total of 1396 children (491 boys) from Grade 1 to Grade 6 from 4 primary schools in Sham Shui Po district of Hong Kong participated. All participants underwent non-cycloplegic refraction. The overall prevalence of myopia (spherical equivalent, SE ≤ -0.5 diopter [D]) was 37.7%, which significantly increased with age, from 13.3% at grade 1 to 54.7% at grade 6. The prevalence of moderate myopia (-3.0D < SE < -6.0D) increased from 1.6% at grade 1 to 18.2% at grade 6 and the prevalence of high myopia (SE < = -6.0 D and/or AL ≥ 26.5 mm) increased from 0.94% (7/747) in grade 1-3 students to 1.85% (12/649) in grade 4-6 students. Among the students with myopia, only 23.6% of the parents knew their children had refractive errors and only 19.8% of the children wore glasses. Multivariate logistic regression analysis showed myopia development was significantly associated with older age (OR = 1.36, P = 0.008), better academic ranking in class in the preceding semester (OR = 1.01, P = 0.02) and absence of routine eye check (OR = 2.70, P = 0.001). Conclusion: The prevalence of myopia in primary school students in Hong Kong is high. There is a low level of awareness of refractive errors among parents, and high proportion of under-correction, resulting in suboptimal vision.-
dc.languageeng-
dc.publisherSpringer Japan. The Journal's web site is located at http://www.springeronline.com/sgw/cda/frontpage/0,11855,5-10074-70-18952714-0,00.html-
dc.relation.ispartofJapanese Journal of Ophthalmology-
dc.subjectRefractive error-
dc.subjectMyopia-
dc.subjectHyperopia-
dc.subjectPaediatric ophthalmology-
dc.titlePrevalence and associations of myopia in Hong Kong primary school students-
dc.typeArticle-
dc.identifier.emailChoy, BNK: bnkchoy@hku.hk-
dc.identifier.emailZhu, MM: zhumm@hku.hk-
dc.identifier.emailLai, JSM: laism@hku.hk-
dc.identifier.emailWong, IYH: wongyhi@hku.hk-
dc.identifier.authorityChoy, BNK=rp01795-
dc.identifier.authorityLai, JSM=rp00295-
dc.identifier.authorityNg, ALK=rp01842-
dc.identifier.authorityWong, IYH=rp01467-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s10384-020-00733-4-
dc.identifier.pmid32180049-
dc.identifier.scopuseid_2-s2.0-85081749377-
dc.identifier.hkuros312652-
dc.identifier.volume64-
dc.identifier.issue4-
dc.identifier.spage437-
dc.identifier.epage449-
dc.identifier.isiWOS:000520695700001-
dc.publisher.placeJapan-
dc.identifier.issnl0021-5155-

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