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对天津市区四所小学226名学生家庭学习照明和学习设施状况的调查结果显示:家庭中学习桌面照度低于150Lx(注:勒克斯即照度单位)标准的占68.1％;家庭学习桌椅高与学生身高符合率仅为3.2％;使用台灯对提高桌面照度明显高于未使用台灯者(P<0.01);视力不良学生的不正确用眼姿势发生率高于视力正常学生(P<0.001),差别有极显著性。
A survey of 226 students’ home learning lighting and learning facilities in four elementary schools in Tianjin shows that the illumination level of learning desktops in families is less than 150Lx (68.1%); the height of home study tables and chairs (3.2%), the height of tabletop lamp was higher than that of table lamp (P <0.01), the incidence of incorrect eyesight of students with poor eyesight was higher than that of students with normal eyesight (P <0.001) The difference is very significant.