摘要
Abstract
Objective To investigation the vision oi children who aged from 4 to 6 in 25 kindergartens of 15 rural and 10 urban areas in Beijng HuaiRou District. To compare with vision and visual corrective factors of children between rural and urban areas. Methods 2150 children in urban and 1679 children in rural areas underwent eye examination, including distant and near visual acuity(VA), best corrected VA, slit lamp biomicroscopy, eye location and eye movement. Those whose vision under 0.8 took dilated pupil examination. Results Significant difference was found in child's low vision rate between rural and urban areas. The low vision rate was 13.02% in urban and were 9.39% in aged 4,15.29% in aged 5 and 14.95% in aged 6 respectively. The low vision rate was 9.17% in rural and were 1.59% in aged 4,13.16% in aged 5 and 8.08% in aged 6 respectively, showing a statistically significant difference between these two groups (P<0.01). The low vision was caused mostly by refractive error (96.31%). Among that, the prevalence of hyperopia was 74.16%,including 75.22% in aged 4,84.47% in aged 5 and 51.51% in aged 6;myopia was 10.77%,including 4.42% in aged 4, 4.85% in aged 5, and 30.30% in aged 6; mixed astigmatism was 15.07% .including 20.35% in aged 4, 10.67% in aged 5,18.18% in aged 6O amblyopia rate was 4.3%, including 36.36% of anisometropia, 65.00% of slight, 31.67% of moderate, 3.33% of severe. Strabismus rate was 15.15%,including 28.00% of slight, 60.00% of moderate, 12.00% of severe. Form deprivation ratewas 2.43 %,including 0% of slight, 50.5% of moderate, 50.5 % of severe. Conclusions The prevalencerates of low vision ate higher in rural areas and the rates decreased with increased ages. Hyperopia is the major cause of low vision in refractive error child aged 4 to 6. Morbidity of myopia, strabismus and amblyopia suggested that survey is a key method for early detect and treatment.关键词
学龄前儿童/视力/屈光不正/弱视Key words
preschool/children/visual/acuity/refractive error/ amblyopia
