PRIMA Bionic Vision System


PRIMA Bionic Vision System comprising a miniaturized wireless photovoltaic sub-retinal implant is in clinical stage with first human feasibility study. PRIMA is designed initially to treat advanced atrophic dry AMD.

PRIMA features:



  • • A tiny wireless photovoltaic implant of 2x2 mm and 30µ thick, comprising 378 electrodes, each with its own local return circuit potentially enabling higher resolution
  •  • Physiological signal processing from sub-retinal space, directly replacing the degenerated photoreceptors
  • • Shorter, less invasive approach than epi-retinal IRIS® enabled by miniaturization of the implant along with wireless nature and design of the implant
  • • State of the art stimulation algorithms


PRIMA operating principle:



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A mini camera mounted on the glasses captures images in the visual environment. These images are processed by the pocket computer in order to extract useful information from the visual scene. The processed images are then sent back to the glasses where a miniaturized projector then projects the processed images using near infrared light on the Prima implant at the back of the eye under the retina. The photovoltaic cells convert the optical information into electrical stimulation to excite the nerve cells of the retina and induce visual perception.