Too much time in the classroom causes short sight, research shows

时间:2018-06-19 单词数:3040

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长时间待在教室容易导致孩子近视_ 双语新闻

The more years you spend in full-time education, the more short-sighted you are likely to be, according to a large UK study.


The link appears to be that students have too little exposure to bright natural light — and the antidote suggested by the researchers is for children to spend more of the day outdoors.


The study, carried out by Cardiff and Bristol university scientists, analysed information on the genetics, eyesight and educational background of 68,000 participants in the UK Biobank database.

这项由英国卡迪夫大学(Cardiff University)和布里斯托大学(University of Bristol)的科学家们开展的研究对英国生物样本库(UK Biobank)中6.8万名参与者的基因、视力和教育背景信息进行了分析。

The findings, published in the BMJ, imply that a graduate who spent 17 years in education is on average one dioptre more short-sighted that someone who left school at the age of 16 after spending 12 years in education. That deterioration is equivalent to the difference between having perfect vision and needing glasses to drive safely.


“With the rapid rise in the global prevalence of myopia and its vision-threatening complications, together with the economic burden of visual loss, the findings of this study have important implications for educational practices,” said Jez Guggenheim, of Cardiff University’s School of Optometry and Vision Sciences.

“由于近视及威胁视力的并发症的全球发病率的快速增加,以及视力损失的经济负担,这项研究成果对教育实践有着重要的意义,”卡迪夫大学视光学和视觉科学学院的杰斯古根海姆(Jez Guggenheim)说。

Using Biobank data, the Bristol and Cardiff scientists analysed 44 genetic variants associated with risk of myopia and 69 variants associated with time spent in education. They found that while the number of years at school and college strongly influenced eyesight, there was no effect in the opposite direction: propensity to myopia did not lead people to remain in education for longer.


There are two explanations for the link. One is the old idea that too much “near” or “close” work strains the eyes, particularly in children.


“An association between time spent reading and myopia is less consistently shown across studies than the protective effect of time spent outdoors.”