小学生预防近视眼基本的知识点

1、小学生预防近视眼基本知识保护视力，预防近视，必须了解预防近视眼的基本知识，树立爱眼、护眼意识，养成良好的用眼卫生习惯。一、选择良好的用眼环境1、读书写字时要有充足的光线，窗户光线及台灯灯光要从左前方射进来。不要在过亮、过暗的光线下读写。2、尽量不用铅芯过细的笔写作业，铅芯软硬适中，作业用纸要洁净，书写字体不要过小。3、选择适宜的课桌椅读书写字，书桌高度以到上腹部附近为宜。4、看电视时，人与电视机应保持三米以上的距离。5、电视屏幕的高度应与看电视人的视线平行或稍低一些。6、电视机、电脑屏幕最好放在背光的地方，避免出现反光现象。7、电脑操作台应低于一般课桌高度，座椅最好高低可调。电脑屏幕中心应与胸

2、部在同一水平线上。8、电脑屏幕与眼睛之间距离不低于50 厘米，视线应略低于平视线 10-20度。电脑操作间的光线不应太弱或太强（12 平方米的房间安装一盏40 瓦日光灯即可达到所需的照度）。9、连续近距离用眼时间不能过长，应控制40-50分钟。课间休息时要注意放松眼睛，应到教室外活动或凭窗远眺或闭目养神。二、注意用眼卫生1、望远训练少年眼球处于生长发育阶段，调节力很强， 每天可进行一定时间的望远训练。如清晨眺望远处的建筑物或树木，或在夜晚辨认天空的星斗，还可以在日常休息时对远处某一目标进行辨认， 认真对待望远训练并持之以恒，对预防近视眼的发生和发展是很有收益的。2、读书写字姿势正确读书写字时应

3、坚持“三要”、“三不要”。“三要”：读书写字姿势要端正，眼与书本距离要保持在33 厘米左右，连续读书一小时左右要休息片刻或向远处眺望一会儿； “三不要”：不要在光线暗弱和直射阳光下看书，不要边吃饭边看书，不要躺在床上、走路时或在晃动的车厢内看书。同时，学生看电视、玩电脑要节制，每次时间不宜过长，距离不要过近。3、良好的采光、照明 在采光最好的地方安放写字桌，防止阳光直射，应备有能开启的窗帘。灯具的安装要合理。桌面照度最好在 150 勒克斯以上，如果有专供学习用的台灯则更好。4、坚持做眼保健操 通过按摩眼睛四周的穴位以增强眼眶的血液循环，改善神经营养，消除眼内的过渡充血，达到解除眼疲劳的目的。每

4、天至少两次，做到穴位准确，坚持经常。5、劳逸结合，睡眠充足学校要合理安排学习与作息制度，严格控制学生在校学习时间。保证充足的睡眠时间是消除疲劳、恢复工作能力的重要因素。因为眼睛在睡眠状态下，肌肉放松最充分，最易消除疲劳，也是保证身体健康所必不可少的。所以，家长和教师都应当重视学生睡眠，保证学生有充足的休息时间。6、注意营养，加强锻炼，增强体质为避免发生近视，少吃糖果和高糖食品。 食糖过多造成血钙减少，助长了近视发生和发展，多吃蔬菜瓜果，常吃富含维生素A 食品（如胡萝卜、菠菜、动物肝脏、杏）对预防近视有益。多到户外活动，多参加球类运动，多观察树木花草，多享受大自然的青山绿水，使眼睛睫状肌得到休息

5、。睡眠要充足，保证眼睛得到充分休息。小学生要每天睡眠 10 小时，初中生每天睡眠9 小时，高中生每天睡眠8小时。7 、定期检查要定期到专科医院检查视力，发现减退应及时矫正，防止近视加重。知识赠送以下资料英语万能作文 (模板型）Along with the advance of the society more and more problems arebrought to our attention, one of which is that.随着社会的不断发展，出现了越来越多的问题，其中之一便是_。As to whether it is a blessing or a curse, howe

6、ver, people take different attitudes.然而，对于此类问题，人们持不同的看法。 (Hold different attitudes持不同的看 ;Come up with different attitudes 有不同的看法 )As society develops, people are attaching much importance to.随着社会的发展，人们开始关注.People are attaching more and more importance to the interview during job hunting求职的过程中，人们慢慢意识

7、到面试的重要性。Asto whether itis worthwhile., there is a long-runningcontroversial debate. It is quite natural that people from different backgrounds may have divergent attitudes towards it.关于是否值得 _的问题，一直以来争论不休。当然，不同的人对此可能持不同的观点。In the process ofmodern urban development, we often findourselves in a dilemma

8、.在都市的发展中，我们往往会陷入困境。Recently the phenomenon has aroused wide concern, some peopleare in alarm that.最近，这种现象引起了人们的广泛关注，有人开始担心_。The human race has entered a completely new stage in its history, with the increasingly rapid economic globalization and urbanization, more problems are brought to our attentio

9、n.人类进入了一个历史的崭新的阶段，经济全球化、都市化的速度不断加快，随之给我们带来了很多问题。. plays such an important role that it undeniably becomes thebiggest concern of the present world, there comes a question, is it a blessing or a curse?"_显得非常重要而成为当今世界所关注的最大的问题，这是无可厚非的。不过，问题是："我们该如何抉择 ?"Now we are entering a new era, full

10、 of opportunities and challenges, 现在我们正在进入一个充满机会和挑战的新时代。People from different backgrounds would put different interpretations on the same case.不同行业的人对同一种问题的解释不尽相同。The controversial issue is often brought into public focus. People from different backgrounds hold different attitudes towards the issue.

11、这中极具争议性的话题往往很受社会的关注。不同的人对此问题的看法也不尽相同。When asked ., some people think. while some prefer.说到 _，有人认为 _，而另一些人则认为 _。Just as the saying goes: "so many people, so many minds". It is quite understandable that views on this issue vary from person to person.俗话说， ""。不同的人对此有不同的看法是可以理解的。To th

12、is issue, different people come up with various attitudes.对于这个问题，不同的人持不同的观点。There is a good side and a bad side to everything, it goes withoutsaying that.万事万物都有其两面性，所以，勿庸置疑，_。When it comes to ., most people believe that ., but other peopleregard .as .提到 _问题，很多人认为 _，不过，一些人则认为_是_.When faced with., qui

13、te a few people claim that ., but otherpeople think as.提到 _问题，仅少数人认为 _，但另一些人则认为_。There is a public controversy nowadays over the issue of . Therewho criticize .argue that ., they believe that .,but people who favor .,on the other hand, argue that.目前，_问题争议较大。批判 _的人认为 _，他们认为_，不过，另一方面，赞同_的人则认为 _。Some p

14、eople are of the opinion that. 有些人认为 _。Many people claim that.很多人认为 _。A majority of 绝大多数A large number of 很多人Some people contend that . has proved to bring many advantages (disadvantages)有些人认为 _有很多有利之处 (不利之处 )。Those who argue for .say that .economic development of thecities.觉得 _的人认为， _ 城市的经济发展。Some

15、people advocate that .有些人在坚持认为 _。They hold that . 他们认为 _。People, who advocate that ., have their sound reasons (grounds)坚持认为 _的人也有其说法 (依据 )。Those who have already benefited from practicing it sing high praiseof it.那些从中受益的人对此大家褒奖。Those who strongly approve of . have cogent reasons for it.强烈认同 _的人有很多原

16、因 。Many people would claim that.有人会认为 _。People who support . give some or all of the following reasons.那些支持 _观点的人列出了如下原因：_。But others hold the view that .但是，另外一些人则认为_。观点的用词： Attitude, opinion, 与其搭配的动词以及词组：Take,have, come up with，set forth, put forward 等。But on the other hand, there are also quite a

17、few people who strongly advocate that.,.不过，另一方面，也有少部分人坚持认为_。But people who are ., on the other hand , maintain that.不过，另一方面， _的人认为 _。However, there are a large number of people who hold a differentview concerning this case.然而，很多人对此有不同的看法。问题用词： Issue, phenomenon，后接介词 , on, over 等。However, some others

18、 argue that.然而，另一些人则认为_。However, there are also some others who contend that.然而，也有人认为 _。But other people set forth completely totally different argument concerning this case.不过，对于此，另一些人则持完全不同的观点。Some people examine this issue from another angle.有的人用另一角度来看这一问题。On the other hand, there are also many o

19、pponents who strongly .另一方面，也有很多反对的人，他们认为_。According to my personality and fondness, I would prefer . ratherthan.根据我的个性以及兴趣， 我选择 _而不会选择 _。Personally, I side with the latter (former) opinion.就我个人而言，我支持后者(前者 )_。Personally, I am in favor of the former point of view.就我个人而言，我较同意前一种看法。To my point of view

20、我认为Tomymind,theadvantagesfaroverweighthedrawbacks(disadvantages, shortcomings)我认为，优点胜过缺点。For my part, I stand on side of the latter opinion that.就我而言，我较赞同后一种观点_。As far as I am concerned, I am inclined to be on the side of the latter view.在我看来，我较同意后一种观点。After a thorough consideration, for my part, I

21、am in favor of thelatter view that.经过深思熟虑，我较支持后一种看法，亦即_。If asked to make a decision, I would prefer.如果真的需要作出选择，我宁愿_。展现问题篇问题的常用词： question, problem, issueRecently, the issue of . has been brought into public focus.近来， _的问题引起了社会的广泛关注。Now we are entering a brand new era full of opportunities and innova

22、tions, and great changes have taken place in people attitudes towards some traditional practice.现在我们进入了一个充满机遇和创新的崭新时代，很多人对某些传统的看法也发生了很大改变。Recently the issue of whether or not . has been in the limelight andhas aroused wide concern in the public.近来，是否 _的问题已经非常明确而且引起了社会的广泛关注。The issue whether it is go

23、od or not to . has aroused a heateddiscussion all over the country._的利与弊已在全国范围内引起热烈的讨论。At present, some people think .whileothers claim .Both sideshave their merits.目前，一些人认为 _而另一些人则认为 _。其实，两种观点都其可取之处。People rarely reach an absolute consensus on such a controversial issue.对于这种极具争议的话题，我们很难作出绝对的回答。People from different backgrounds would put different interpretations on the same case.不同行业的人对同一种问题的解释不尽相同。The controversial issue is often broug