Table 3.
Subretinal device characteristics
| Device | Electrode specifications | Size | Advantages | SAE/AEs | Clinical status |
|---|---|---|---|---|---|
| PRIMA | 378 electrodes (100 µm in width) | 2 × 2 mm and 30 microns thick |
- May result in natural conversion of pulsed spatiotemporal stimulation pattern into bursts of spikes from the retinal ganglion cells - Minimally invasive procedure - Targeted electrical stimulation |
- Reduced retinal thickness |
In clinical trial for age-related macular degeneration (France and USA) |
| IMTC’s HARP4k retinal prosthesis system | 4000 microelectrodes (30 µm thick) | 30 mm | - Contact lens shape | Information not available | Designed for retinitis pigmentosa and age-related macular degeneration |
| - Wireless | |||||
|
- Expected to support face recognition and reading font size > 14 pt | |||||
| - High granularity and efficiency | |||||
| - Biocompatible and implantable | |||||
|
- Flexible technology interfacing soft tissue |