Alpha AMS



The Alpha AMS is the second generation electronic subretinal implant produced by Retina Implant AG.


  • 2015: First patient implanted
  • 2016: CE mark approval
  • 2019: End of production


Alpha AMS electrically stimulates the deteriorated photoreceptors of the outer retinal tissue of the eye. These stimulated photoreceptors send information through the optic nerve to the visual cortex, producing visual images. Alpha AMS relies on an external power supply, but not an external camera. It consists of 1600 photodiodes and is placed underneath the retina.

Device Specifications

  • Number of electrodes: 1600
  • Electrode layout: rectilinear
  • Electrode pitch: 70 μm
  • Image processor location: subretinal

Clinical Trials