关键词: 屈光筛查, 界值点, 儿童

Abstract: : Objectives To analyze the outcome of Welch Allyn spot VS100 in testing for children aged 6 months to 6 years,and to determine the cut-off point of each age group. Methods Totally 15 342 children aged 6 months to 6 years were enrolled in this study from March to September in 2018 and conducted refractive screening by Spot VS100.Statistical descriptions and analysis were conducted by age to determine the cut-off points for each group. Results The x-±2s of spherical equivalent and P₉₅ of cylinder in 6 to 12-month-old children,1 to 3-year-old children and 3 to 6-year-old children were -1.50 D —+2.00 D,2.75 D;-1.25 D —+1.75 D,2.00 D;and -0.75 D —+1.25 D,1.25 D,respectively.The absolute value of cylinder gradually decreased with increasing age (H=739.449,P＜0.059),while the constituent ratio of emmetropia increased with the increasing age of children(χ²=585.048,P＜0.01). Conclusions The results of refractive screening for children aged 6 months to 6 years should be judged according to their age.Children wih spherical equivalent deviating out of x-±2s and cylinder deviating over P₉₅ should be seen as high-risk of amblyopia and be given further examinations.

Key words: refraction screening, cut-off point, children