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对3岁儿童进行视觉筛选可行吗?比较Lea Sym-bol表和hvot(LM)表

世界核心医学期刊文摘（眼科学分册） 2005年第8期1卷 15-15页

作者： (LM) chart Kvarnstrm G. Jakobsson P. 潘佳鸿 Dept. of Neuroscience and Locomotion Division of Ophthalmology oping University SE-581 85 LinkLinkping Sweden

Purpose: The aim of this prospective study was to compare visual screening at the age of 3 years with screening at 4 years using two different charts. Methods : A total of 478 3-year-old children were tested at four child health care cen tres (CHCCs). Of these children, 440 were tested again at the age of 4 years. A third group, a control group, consisting of 229 children, was examined only at t he age of 4 years. All children were tested with both the hvot chart and the Lea Symbol chart. Results: Testability rates for 3-year-olds were almost the same with the Lea Symbol chart and the hvot chart (82.8%and 84.8%, respectively). The corresponding rates for the same children tested at 4 years of age were 96.5 %and 97.0%, and for the 4-year-olds not previously tested 92.9%and 92.8%. The mean testing time was somewhat shorter for the Lea Symbol chart in all three groups, but the difference was not statistically significant. The difference in the assessment of visual acuity between the two charts was small and less than 1/10th of a line. The positive predictive value was lower at 3 years (58%) than has previously been found at 4 years (74.6%). Conclusion: Three-year-old chi ldren co-operate well in visual acuity testing. However, the examination time i s a little longer and the testability rate is about 10%lower than at 4 years. B oth 3-year-old and 4-year-old children can be tested equally well with the H VOT and the Lea Symbol charts.

关键词： hvot LM Lea Sym-bol 易测测试时间保健中心阳性预测值

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