Near-work activity, night-lights, and myopia in the Singapore-China study
| Autor: | Rong-Zhao Hong, Ming-Zhi Zhang, Zhi Fu Fu, Seang-Mei Saw, Donald T.H. Tan, Mei-Hua Pang |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Male
Refractive error China Work genetic structures Cross-sectional study Eye disease Prevalence medicine Myopia Odds Ratio Humans Human Activities Child Dioptre Lighting Singapore business.industry Odds ratio medicine.disease eye diseases Confidence interval Ophthalmology Cross-Sectional Studies El Niño Reading Optometry Female business Demography |
| Zdroj: | Archives of ophthalmology (Chicago, Ill. : 1960). 120(5) |
| ISSN: | 0003-9950 |
| Popis: | Objective To investigate the relationship among near-work activity, night-lights, and myopia in schoolchildren in Singapore and Xiamen, China. Methods The refractive error and ocular dimensions of 957 Chinese schoolchildren aged 7 to 9 years in Singapore and Xiamen, China, were determined using cycloplegic autorefraction and A-scan ultrasound biometry. Information on near-work activity(number of books read per week, reading in hours per day) and night-light use before age 2 years was obtained. Results The prevalence rate of myopia was 36.7% (95% confidence interval [CI], 33.0%-40.3%) in Singapore and 18.5% (95% CI, 14.0%-23.1%) in Xiamen, China. The crude odds ratio (OR) of higher myopia (at least –3.0 diopters) for children who read more than 2 books per week was 3.50 (95% CI, 2.15-5.70). In a multivariate logistic regression model, the OR of higher myopia for children who read more was 2.81 (95% CI, 1.69-4.69), adjusted for age, night-light use, parental myopia, and country, whereas there was no association between night-light use before age 2 years and higher myopia (OR, 1.54; 95% CI, 0.92-2.58), after controlling for age, books read per week, parental myopia, and country. Main Outcome Measures The ORs of higher myopia for children who read more and children who are exposed to night-lights before age 2 years. Conclusions Reading (number of books per week) may be associated with higher myopia in Chinese schoolchildren. However, night-light use does not seem to be related to higher myopia. |
| Databáze: | OpenAIRE |
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