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新的视网膜植入装置将使盲人重见光明 - China Medical Device Manufacturer
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Fri, January 19th, 2018

2010年11月CMDM电子快讯 » 技术新知
新的视网膜植入装置将使盲人重见光明

德国的一个研究小组近日在《英国皇家学会会报B》(Proceedings of the Royal Society B)上发表文章,称他们开发出了一种新型视网膜植入装置,在将它植入眼部后,在数天之内,三名失明者就恢复了视力,看到了不同的形状和物体。

其中一名接受治疗者甚至能够辨别和找到放置在他前方桌子上的物体。并且能够绕着房间独立行走,并靠近指定的人,阅读钟面以及区分七种不同色度的灰色。Retinal Implant AG公司和德国图宾根大学眼科研究所共同开发了这种新型视网膜植入装置,这是人们在电子视觉修复术上取得的前所未有的突破,并可能会彻底改变全世界近20万因视网膜色素变性(一种退行性眼科疾病)导致失明患者的命运,使他们重见光明。

在这种疾病中,患者眼睛中的光受体不再发挥作用。艾伯哈特.瑞纳教授(Prof. Dr. Eberhart Zrenner,Retinal Implant AG公司的创始人、图宾根大学眼科医院主任和主席)说,“这项初步实验结果有力表明,从理论上讲,由于遗传性视网膜萎缩症而导致失明的患者,有可能恢复日常生活所需的视力。”

这项装置,名为视网膜下植入元件,位于视网膜下部,可以直接取代视网膜退化失去的光受体而发挥作用。这种装置本身,利用眼睛的天然图像处理功能而不经过光探测这一阶段,在患者眼中产生视觉,这一过程稳定且眼睛可随意转动。而其他类型的视网膜植入物——视网膜外层植入——均位于视网膜外层;因为这些类型的装置都绕过了眼睛中完整的光敏结构,所以需要患者佩戴一个外部摄像头和处理设备才能发挥功能。

文章中描述的这种视网膜下植入装置因为比其他类似装置有非常多的光受体,能产生非常高的清晰度。正如瑞纳博士(Dr. Zrenner)所说,“尽管要实现大范围临床应用这一最终目标尚需时日,但目前的研究从理论验证上提出这种装置能使失明患者恢复可用视觉。”

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