红点黄本对城市小学生远视力保护效果的追踪观察

目的探讨红点黄本对小学生远视力的保护作用,为学生用簿本标准的制订提供依据。方法整群抽取大连市某小学二年级学生131名为试验组6、35名为对照组,追踪观察3 a。观察指标为受试者的双眼远视力。结果试验组远视力以保持“不变”为主(43.9%),比对照组(21.2%)多1倍;远视力下降3~5行的,对照组(合计20.3%)各分别比试验组约多1倍;下降6行及以上者,试验组为0,而对照组占4.5%。试验组的右眼远视力3 a间平均下降0.034 4,而对照组下降0.095 1(t=3.731,P=0.000);试验组的左眼远视力平均下降0.044 3,而对照组下降0.081 1(t=2.247,P=0.025)。结论红点黄本对城市小学生的远视力有保护作用。

Follow-up Study on the Effects of the Yellow Paper with Tens of Red Dots on Myopia Among Pupils

Objective To explore the effects of yellow paper with tens of red dots(YPRD) on myopia of pupils,and to provide evidence for the standard of students' book paper.Methods A cluster sampling of 131 pupils in grade two were taken as experimental group(EG),and 635 were taken as control group(CG).Three years' following-up study was conducted to survey their distance vision(DV).Results In EG,43.9% of the students kept their DV invariably after three years and only 21.3% in CG,20.3% pupils' DV decreased three to five lines and 9.9% in EG.About 4.5% in CG and none in EG decreased more than five lines.In EG,DV of right eye decreased 0.034 4 after three years and 0.095 1 in CG(t=3.731,P=0.000).In EG,DV of left ye decreased 0.044 3 after three years and 0.081 1 in CG(t=2.247,P=0.025).Conclusion Yellow paper with red dots have good impacts on urban pupils' DV protection.