什么光学仪器可以让低视力患者看清电脑屏幕

2025-01-22 20:45:54
推荐回答(3个)
回答1:

低视力要借助光学仪器【近用助视器】来看近。
助视器是能够改善或提高低视力患者视觉能力的任何一种装置或设备,与助听器相似,助听器能使听力差的人听到他原来听不到的声音,而助视器可以使低视力患者能看清楚他本来看不到或看不清的东西。
近用助视器也称为放大镜,是低视力患者用来观察近距离的物体。应将所看到物体放在它的物距处,可以看到物体被放大的正立虚像,并处于人眼的明视距离附近。它在结构上可以有很多种,如:手持式放大镜,可以依据人眼的不同适当地改变物距,观察较为方便;架式放大镜固定了物距,可腾出双手进行工作;带光源放大镜可提高暗处的光照,增强明亮感和对比度;眼镜式助视器可根据人眼的视力不同,选用不同的品种,视野较大,近用助视器有不同的放大倍数一般为2—6倍。使用近用助视器时,应将目标放在物距的附近.才能观察清晰,眼睛要靠近镜片,以便增大视场,同时也减少高倍放大镜引起的观察物变形。

回答2:

可以参考下面的方法保护眼睛,控制近视度数增长:
一、近距离用眼时间不宜过长,每隔40--50分钟就应该稍微休息3一5分钟,向远处眺望一会减缓视力疲劳。
二、读书写字,玩电脑,保持正确姿势,桌椅高低要合适,眼与读物之间应保持在33厘米左右的距离。
三、五谷杂粮、荤素搭配,多吃青菜水果,不要偏食。食物中缺乏维生素容易发生夜盲症和干眼病,食物中缺乏微量元素铬和钙,容易患近视。
四、看书写字时,光线应适度,不宜过强或过暗,光线应从左前方射来,以免手的阴影防碍视线。光线要柔和,如为白炽灯,应在25~40W之间,不建议在太阳光下看书。因为光线强弱对瞳孔扩张有直接影响,过强的光线会增加眼睛调节强度,加重眼睛劳动强度,时间长了反而容易造成近视。一般桌面台灯以40瓦以下为宜。
五、避免边走路边看书或在行走的车厢里看书。因为车厢在震动,身体在摇动,眼睛和书本距离无法固定,眼镜的负担就会加重。经常如此就很可能得近视眼。
六、积极参加体育锻炼,增强体质。当眼球追随目标时,睫状肌不断地放松与收缩,以及眼外肌的协同作用,可以提高眼的血液灌注量,促进眼部新陈代谢,从而减轻眼疲劳。而且身体素质的好坏与儿童近视眼的发生也有密切关联。营养不良,体质虚弱的孩子容易得近视眼。
七、坚持做正确的眼保健操。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,有利于青少年假性近视的防治,是青少年眼部自我保健的好方法。
八、少吃糖果和高糖食品。食糖过多,会使血液中产生大量酸性物质,酸与肌体内的食盐,特别是钙相结合,造成了血钙减少,这就会影响眼球壁的坚韧性,使眼轴易于伸长,助长了近视发生和发展。
九、定期到眼科医院检查视力,发现减退应及时矫正,防止近视加深。
十、少吃甜食。因为糖在体内代谢时需要大量维生素B1,如果糖分摄取过多,维生素B1就显得不足了。维生素B1缺乏会使视神经生长发育受影响,而导致视力的减退。过多地摄取糖分也会降低体内钙质,使眼球弹力减弱,助长近视眼的发生发展。

回答3:

翠鸟视觉助视器,科技创新跨技术融合产品,盖含了光学,AI、VR、医学、5G物联网/传感技术,看近看远都清晰,专业低视力解决方案,能让部分盲人(眼睛有光感的人群)和视力0.0几~0.3的人群看清事物,读书学习,休闲提高生活品质。

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