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Old 25-01-2007, 01:04 PM   #1 (permalink)
Finale
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Default 如何防止近视眼的度数加深?

因为近视是过度用眼引起的睫状肌持续痉挛和晶状体的改变,所以应对近视的方法就是尽可能减少用眼,一下几点 需请您注意:
引起近视的原因归结起来不外又遗传和环境两大因素。
1.遗传因素:研究认为高度近视眼的双亲家庭,下一代近视的发病率较高,近视眼具有一定的遗传倾向已被公认 ,对高度近视更是如此。但对一般近视遗传倾向就不很明显。
2.环境因素:近视眼的发生和发展与近距离用眼的关系非常密切。青少年的眼球正处在生长发育阶段,调节能力 很强,眼球壁的伸展性也比较大,阅读、书写等近距离工作时,不仅需要眼的调节作用的发挥,双眼球还要内聚, 这样眼外肌对眼球施加一定的压力,久而久之,眼球的前后轴就可能变长。每增长1毫米近视就达-3.00屈光度(也就是普通说的300度),当然这种近视绝大多数为单纯性近视,一般度数都比较低,都在6 屈光度以下,发病多在青春期前后,进展也比较缓慢,有人把这种近视称之为真性近视,以示与假性近视相区别。 青少年为了预防近视的发生,应注意以下几点:
注意用眼卫生。养成良好的阅读、书写习惯:看书、写字姿势要端正;坐车走路不要看书;看书时间久要注意休息 放松眼睛;不要长时间玩电子游戏。坚持做眼球保健操等。
注意锻炼身体。合理营养,增强体制,制定合理的生活制度。饮食中注意摄取富含维生素A、B2、C、E的食物 多吃肝脏、牛奶、蛋黄、绿叶蔬菜、胡萝卜等食物,还要多吃粗面杂粮,少吃糖果,限制高动物脂肪的摄入,预防 近视的发生和发展。
定期检查视力。建立视力档案(有条件的应从幼儿园开始),监测边缘视力(1.0左右)。如发现视力低于1. 0时应及早矫治。
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Old 26-01-2007, 04:05 PM   #2 (permalink)
loonshi
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My fren told me not to use computer for too long... Will cause dark eye rings as well... But my job require me to use the pc leh.. hw to not look at it????
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