South Australian Institute of Ophthalmology, University of Adelaide University and Sight for All, Adelaide, South Australia, Australia.
Ophthalmology. 2012 Oct;119(10):2021-7. doi: 10.1016/j.ophtha.2012.03.049. Epub 2012 Jun 12.
Vientiane Province is an urbanizing region in Southeast Asia. We aimed to determine the prevalence of refractive error and visual impairment in primary school-aged children in this region.
Prospective, cross-sectional survey.
A total of 2899 schoolchildren from Vientiane Province, Lao People's Democratic Republic (Lao PDR).
Ten districts from Vientiane were randomly selected and 2 primary schools were randomly selected from each district. All children aged 6 to 11 years at selected schools were eligible to participate. The examination included visual acuity (VA) testing, cycloplegic retinoscopy with subjective refinement if indicated, ocular motility testing, and anterior segment and fundus examinations in visually impaired children.
Cycloplegic refraction and VA.
There was an estimated total of 3330 children who were eligible to participate, and data were recorded from 2899 (87%) of these children. Complete refractive data were available on 2842 children (85% of eligible population). The mean spherical equivalent (SE) in the right eyes was +0.60 diopter (D) (95% confidence interval [CI], 0.49-0.72), and the mean SE in the left eyes was +0.59 (95% CI, 0.50-0.68). The prevalence of hyperopia was 2.8% (95% CI, 1.9-3.7; 88 subjects), and the prevalence of myopia was 0.8% (95% CI, 0.3-1.4; 24 subjects). The majority of children (98%; 95% CI, 97.0-99.0) had normal unaided binocular VA (at least 20/32 in their better eye). The overall prevalence of any visual impairment (presenting VA <20/32 in the better eye) was 1.9% (95% CI, 1.0-2.9; 55 subjects). In multivariate logistic regression analysis, age (P = 0.001) was a significant predictor, and female gender (P = 0.08) and Yao ethnicity (P = 0.09) were borderline significant predictors of the presence of any visual impairment.
Visual impairment is not a public health concern in this primary school-aged population; however, visually impaired children in the community were not studied. From this baseline, future surveys could determine the effect of increasing urbanization on myopia prevalence in this population.
万象省是东南亚的一个城市化地区。我们旨在确定该地区小学年龄儿童的屈光不正和视力损害的患病率。
前瞻性、横断面调查。
老挝人民民主共和国（老挝）万象省的 2899 名小学生。
从万象的 10 个区中随机选择 2 所小学，并从每个区中随机选择 2 所小学。所有在选定学校年龄在 6 至 11 岁之间的儿童都有资格参加。检查包括视力（VA）测试、如有需要用睫状肌麻痹验光进行主观细化、眼球运动测试以及在视力受损儿童中进行眼前段和眼底检查。
睫状肌麻痹屈光和 VA。
估计共有 3330 名儿童有资格参加，其中有 2899 名（87%）儿童记录了数据。2842 名儿童（合格人群的 85%）提供了完整的屈光数据。右眼平均球镜等效值（SE）为+0.60 屈光度（D）（95%置信区间[CI]，0.49-0.72），左眼平均 SE 为+0.59（95% CI，0.50-0.68）。远视的患病率为 2.8%（95% CI，1.9-3.7；88 例），近视的患病率为 0.8%（95% CI，0.3-1.4；24 例）。大多数儿童（98%；95% CI，97.0-99.0）具有正常的未矫正双眼 VA（在较好的眼中至少为 20/32）。任何视力损害（在较好的眼中 VA<20/32）的总患病率为 1.9%（95% CI，1.0-2.9；55 例）。在多变量逻辑回归分析中，年龄（P=0.001）是一个显著的预测因素，而女性性别（P=0.08）和瑶族种族（P=0.09）是视力损害存在的边缘显著预测因素。
在这个小学年龄人群中，视力损害不是一个公共卫生问题；然而，社区中的视力受损儿童没有被研究。从这个基线开始，未来的调查可以确定城市化对该人群近视患病率的影响。
