Because now many students homework more homework should be on table for a few hours, eyes will damage, lead to myopia, blurred vision.
因为现在功课多许多同学写作业都要趴在桌前几个小时，眼睛会受到损伤，导致近视，视力模糊。
Wearing lower degree convex lens can reduce incidence rate of myopia in primary school students.
配戴低度凸透镜可降低小学生近视的发生率。
In our country, before the 1980s, the incidence of myopia is very low in students in primary and middle schools.
在我国二十世纪八十年代以前，近视的发病率很低，中小学生中为数很少。
As self-health care consciousness of students in primary and middle schools is poor, the incorrect pose while reading or watching at TV, computer for a long time can cause myopia.
中小学生自我保健意识差，阅读时姿势不正或在电视、电脑屏幕前久视，都会引起近视。
Objective To discuss the causes of myopia, and providing evidences of visual acuity health for students in shools.
目的探讨近视原因，并对在校学生视力保健提供依据。
Objective: To investigate the impacts of eye care habits and vision burden on myopia among primary and high school students.
目的：了解中小学生用眼习惯与负担，探讨这些因素对近视的影响。
Conclusion Wearing lower degree convex lens can reduce incidence rate of myopia in primary school students.
结论配戴低度凸透镜可降低小学生近视的发生率。
Cai did caution that myopia is already starting to calcify, particularly for working-class students for whom the combination of tuition and lost wages can seem too large a sacrifice.
但蔡昉说，负激励效应已经开始出现苗头，尤其是家境不太好的学生，他们会觉得学费和工资损失的代价太大。
AIM: to assess the prevalence of refractive errors in middle school students in Lanzhou city and explore the risk factors for myopia.
目的：调查兰州市中学生屈光不正的发病率并探讨近视发病的危险因素。
Objective To investigate the effect of lower degree convex lens on preventing myopia of primary school students.
目的探讨低度凸透镜预防小学生视近的效果。
So, I for the sake of students' eyes, invented this, electronic cat's eye wear, can let you see tiny words within 10 meters, also can protect the eyes, the prevention of myopia.
所以，我为了同学们的眼睛，发明了这个，电子猫眼戴上去以后，可以让你在十米以内看清楚极小的字，还能保护眼睛，预防近视。
So, I for the sake of students' eyes, invented this, electronic cat's eye wear, can let you see tiny words within 10 meters, also can protect the eyes, the prevention of myopia.
所以，我为了同学们的眼睛，发明了这个，电子猫眼戴上去以后，可以让你在十米以内看清楚极小的字，还能保护眼睛，预防近视。
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