Prevalence of myopia in a group of Hong Kong microscopists

Ting, Patrick W.K., Lam, Carly S.Y., Edwards, Marion H., & Schmid, Katrina L. (2004) Prevalence of myopia in a group of Hong Kong microscopists. Optometry and Vision Science, 81(2), pp. 88-93.


PURPOSE: To study the prevalence and magnitude of myopia in a group of Hong Kong Chinese microscopists and compare it with that observed in microscopists working in the United Kingdom. METHODS: Forty-seven microscopists (36 women and 11 men) with a median age of 31 years and working in hospital laboratories throughout Hong Kong were recruited to the study. Information about past refractive corrections, microscopy work, and visual symptoms associated with microscope use were collected. All subjects had a comprehensive eye examination at The Hong Kong Polytechnic University Optometry Clinic, including measures of refractive error (both noncycloplegic and cycloplegic), binocular vision functions, and axial length. RESULTS: The prevalence of myopia in this group of microscopists was 87%, the mean (+/- SD) refractive error was -4.45 +/- 3.03 D and mean axial length was 25.13 +/- 1.52 mm. No correlation was found between refractive error and years spent working as a microscopist or number of hours per day spent performing microscopy. Subjects reporting myopia progression (N = 22) did not differ from the refractively stable group (N = 19) in terms of their microscopy working history, working hours, tonic accommodation level, or near phoria. However, the AC/A ratio of the progressing group was significantly greater than that of the stable group (4.59 delta/D cf. 3.34 delta/D). CONCLUSION: The myopia prevalence of Hong Kong Chinese microscopists was higher than that of microscopists in the United Kingdom (87% cf. 71%), as well as the Hong Kong general population (87% cf. 70%). The average amount of myopia was also higher in the Hong Kong Chinese microscopists than the Hong Kong general population (-4.45 D cf. -3.00 D). We have confirmed that the microscopy task may slightly exacerbate myopia development in Chinese people.

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16 citations in Scopus
14 citations in Web of Science®
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ID Code: 4269
Item Type: Journal Article
Refereed: Yes
Additional Information: Self-archiving of the author-version is not yet supported by this publisher.
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Keywords: Asian Continental Ancestry Group/, statistics & numerical data, Microscopy/, adverse effects, Microscopy/, statistics & numerical data, Myopia/, epidemiology, Myopia/, etiology, Occupational Diseases/, etiology, Adult, Comparative Study, Disease Progression, Female, Great Britain/epidemiology, Hong Kong/epidemiology, Humans, Male, Myopia/ethnology, Myopia/physiopathology, Prevalence, Research Support, Non, U, S, Gov't
ISSN: 1538-9235
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 2004 Lipincott, Williams and Wilkins
Deposited On: 14 Jun 2006 00:00
Last Modified: 29 Feb 2012 13:09

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