视觉假体系统简介Argus® II Retinal Prosthesis System （Argus® 2）

Argus® 2视网膜假体系统(Argus II)也被称为仿生眼或视网膜植入物。它的目的是提供电刺激诱导的视网膜视觉感知使失明者复明。对于严重的患者是深刻的色素性视网膜炎。一个微型摄像头安置在病人的眼镜捕捉一个场景。视频发送到一个小patient-worn计算机(即频处理单元- VPU)处理和转换为指令发送回眼镜通过电缆。这些指令传输无线天线的视网膜植入物。然后信号被发送到电极阵列,排放小的电脉冲。这些脉冲绕过受损的感光细胞,刺激视网膜的剩余细胞,它沿着视神经视觉信息传输到大脑,创建感知模式的光。病人学会解读这些视觉模式与他们的视网膜植入物。

这种装置造福全人类:对于失明患者严重的视觉感知色素性视网膜炎和裸光或完全失明患者，由联邦(美国)法律授权提供视网膜电刺激导。这个设备使用的有效性还没有被完全证明。

The Argus® II Retinal Prosthesis System ("Argus II") is also known as the bionic eye or the retinal implant. It is intended to provide electrical stimulation of the retina to induce visual perception in blind individuals. It is indicated for use in patients with severe to profound retinitis pigmentosa. A miniature video camera housed in the patient's glasses captures a scene. The video is sent to a small patient-worn computer (i.e., the video processing unit – VPU) where it is processed and transformed into instructions that are sent back to the glasses via a cable. These instructions are transmitted wirelessly to an antenna in the retinal implant. The signals are then sent to the electrode array, which emits small pulses of electricity. These pulses bypass the damaged photoreceptors and stimulate the retina's remaining cells, which transmit the visual information along the optic nerve to the brain, creating the perception of patterns of light. Patients learn to interpret these visual patterns with their retinal implant.

HUMANITARIAN DEVICE: Authorized by Federal (U.S.) law to provide electrical stimulation of the retina to induce visual perception in blind patients with severe to profound retinitis pigmentosa and bare light or no light perception in both eyes. The effectiveness of this device for this use has not been demonstrated.

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