Knowledge and practices of visual acuity screening by primary school educators
Knowledge and practices of visual acuity screening by primary school educators
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DOI：
10.4102/aveh.v74i1.309
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发表时间：
2015-11
影响因子：
--
通讯作者：
Yentl M. Juggernath;S. Knight
中科院分区：
文献类型：
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作者：
Yentl M. Juggernath;S. Knight
背景：世界卫生组织估计，全世界有1200万5至15岁的儿童由于未矫正的屈光不正而视力受损。目的：评价五年级教育工作者在接受结构化培训后，视力筛查的知识和实践是否有所提高。背景：南非德班郊区查茨沃斯的小学。方法：采用整群随机对照试验。获得生物伦理学批准和知情同意。41所学校中的38所被随机分为干预组或对照组。每个五年级的教室都有一张Snellen图表，来自干预学校的教育工作者接受了关于VA筛查和如何识别学习者视力障碍的结构化培训。从19名干预组和18名对照组的教育工作者中收集数据，在开始时（基线）和6周后，两组都使用自我管理的问卷调查。采用Wilcoxon符号秩检验来衡量变化的显著性。结果：接受过培训的小学教育工作者对VA筛查有充分了解的比例在干预组从5.3%显著增加到100%。在对照组中，教育工作者对VA筛查的知识保持不变。受过训练的教育工作者对儿童进行VA筛查的比例从0%增加到79% （p < 0.001）。结论：向小学教育工作者提供了一个简单的结构化视觉障碍筛查方案，增加了他们的知识，并改善了课堂上的视觉筛查做法。
Background: The World Health Organization estimates that 12 million children worldwide between the ages of 5 and 15 years have visual impairment owing to uncorrected refractive error. Aim: To assess whether the knowledge and practices of visual acuity (VA) screening improved after structured training of Grade 5 educators. Setting: Primary schools in Chatsworth, a suburb of Durban, South Africa. Method: A cluster randomised controlled trial was conducted. Bioethics approval and informed consent was obtained. Thirty-eight of 41 schools were randomised to an intervention or control group. Each Grade 5 classroom was given a Snellen chart, and educators from the intervention schools received structured training on VA screening and how to recognise visual impairment in learners. Data were collected from the 19 intervention and 18 control educators using a self-administered questionnaire at outset (baseline) and 6 weeks later in both groups. The Wilcoxon signed-rank test was used to measure the significance of changes. Results: The proportion of trained primary school educators who had adequate knowledge of VA screening increased significantly from 5.3% to 100% in the intervention group. In the control group, educators’ knowledge of VA screening stayed the same. The proportion of trained educators who performed VA screening of children increased from 0% to 79% ( p < 0.001). Conclusion: A simple structured VA screening programme presented to primary school educators increased their knowledge and led to improved visual screening practices in the classroom.