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Intraocular Pressure in Northern China in an Urban and Rural Population. The Beijing Eye Study |
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| Intraocular Pressure in Northern China in an Urban and Rural Population. The Beijing Eye Study |
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作者：Liang Xu… 文章来源：(1)Beijing Institute of Ophthalmology, Tongren Hospital, Beijing, China 点击数：2613 更新时间：2005/6/30 17:28:14 
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| Purpose. To evaluate intraocular pressure (IOP) and its demographic associations in an urban and rural population in Northern China. Design. Population-based cohort study. Methods. In the Beijing Eye Study, IOP was measured by non-contact pneumotonometry. Mean age was 56.20 10.59 years (40 – 101 years). Results. Mean IOP was 16.11 3.39 mm Hg (median, 16 mm Hg; range, 7 to 60 mm Hg). In the rural group and the urban population group, respectively, IOP was significantly (p=0.016 and p=0.029, resp.) lower in the high-age group (75+ years) than in the middle-age group (55-64 years). In the rural group, IOP was additionally significantly lower in the age group of 40-44 years than in the middle-age group suggesting a reversed U-like course. A multiple regression analysis revealed that IOP significantly increased with myopia (p=0.024), and that it was statistically independent of rural area versus urban area (p=0.12) and gender (p=0.71). Conclusions. In the Northern Chinese population, mean and median of IOP as measured by pneumotonometry is 16 mm Hg with a normal range (mean +/- two standard deviations) of 10 to 22 mm Hg. In cross-sectional analysis, IOP slightly increased towards an age of 55-64 years, and decreased towards higher ages. IOP increased with myopia. It was not associated with rural versus urban region or gender.
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