IRIS II Bionic Vision System Approved in Europe

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The Argus II Retinal Prosthesis System (“Argus II”) is the world’s first and only approved device intended to restore some functional vision for people suffering from blindness. Argus II is approved for use in the United States (FDA) and European Economic Area (CE Mark) and is available in some European countries, with several more to be added.

How Does Argus® II Produce Sight?

In a healthy eye, the photoreceptors (rods and cones) in the retina convert light into tiny electrochemical impulses that are sent through the optic nerve and into the brain, where they are decoded into images. If the photoreceptors no longer function correctly—due to conditions such as retinitis pigmentosa—the first step in this process is disrupted, and the visual system cannot transform light into images.

The Argus II Retinal Prosthesis System (“Argus II”) bypasses the damaged photoreceptors altogether. 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 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.

Possible Military Applications.
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IRIS II Bionic Vision System Approved in Europe

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