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Forum 美国推出人造视网膜,10万美元帮助盲人恢复视力
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  • 创新技术
  • 人造视网膜
  • 医疗电子创新
  • 便携医疗设备
Related

美国推出人造视网膜,10万美元帮助盲人恢复视力

启蒙19
启蒙19 over 14 years ago

来源:中国日报网

 

 

 

据悉,美国一家公司日前宣布,他们利用先进的成套人造视网膜技术,成功帮助盲人恢复了部分视力。

去年,这家名为“第二视觉”的公司把这种叫做“阿格斯II型”的人造装置植入68岁英国退休工程师埃里克 塞尔比的右眼。塞尔比失明近20年,一直依靠导盲犬外出。手术后,他可以“看到”人行道等易辨识的物体。

据介绍,这套装置还包括安装在眼镜上的微型摄像机、无线发射器和一台单独的微型无线计算机。首先,眼镜上的摄像机捕捉到外部景象,然后这些经过计算机处理的图像再经由无线发射器传送到植在患者眼球表面的人造视网膜上,并转换为电脉冲信号;接着,人造视网膜上的电极会刺激视网膜的视觉神经,继续将信号沿视神经传送到大脑。

发明者称,这些脉冲信号可以“欺骗”大脑,让大脑以为患者的眼睛仍然在正常工作。最终,患者可以和常人一样“看到”外部世界,并区分光明和黑暗,从而恢复视力。不过,安装“阿格斯II型”的盲人需要经过培训才能更好地识别眼前物体,因为他们看到的只是物体的大致轮廓。譬如,如果看到三个点,则可能意味着他们眼前的东西是三角形。即便如此,塞尔比还是对恢复部分视力感到很开心,他说:“虽然只是一些光束,还需要用脑子分辨它们是什么。但是能看到东西已经让我非常惊奇和高兴了。”

image

目前,“阿格斯II型”的市场定价为10万美元,颇为昂贵,不过已有包括荷兰在内的多个欧洲国家正在考虑是否要引进并推广该产品。如果获得相关部门批准,荷兰将是第一个销售这种人造视网膜的国家。然而医生表示,此种技术只适用于因色素性视网膜炎致盲的病人,因为他们并非先天的盲人,之前能看见东西,还残存有健康的视网膜细胞和视神经。

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