Walter P, Mokwa W
Universitätsaugenklinik, RWTH, Aachen.
Ophthalmologe. 2005 Oct;102(10):933-40. doi: 10.1007/s00347-005-1250-2.
Epiretinal implants consist of a camera chip capturing the scene, a visual processor calculating retina-specific pulse sequences, a transponder for data and energy, and the implant itself. The implant consists of a receiver integrated into a posterior chamber lens, a microcable, and the retina stimulator. The stimulator is fixated onto the retinal surface using retinal tacks. In animal experiments it was shown that the materials being used were tolerated, the data and energy stream did not induce any adverse events, and that the fixation was feasible using retinal tacks. Stimulation of the inner retinal surface yielded a topographically correct activation of visual cortical areas. Even after a long history of blindness, tests in humans disclosed visual percepts.
视网膜外植入物由一个捕捉场景的摄像头芯片、一个计算视网膜特定脉冲序列的视觉处理器、一个用于数据和能量传输的应答器以及植入物本身组成。该植入物由一个集成在后房晶状体中的接收器、一根微电缆和视网膜刺激器组成。刺激器通过视网膜钉固定在视网膜表面。动物实验表明，所使用的材料具有耐受性，数据和能量流不会引发任何不良事件，并且使用视网膜钉进行固定是可行的。对视网膜内表面的刺激在视觉皮层区域产生了地形学上正确的激活。即使在长期失明之后，人体测试也揭示了视觉感知。
