Table 5.

Neural device characteristics

Device	Electrode specifications	Size	Advantages	SAE/AEs	Clinical Status
ORION	60 electrodes	Information not available	- Treats a wider variety of diseases - Neural placement - Ability to navigate the environment	- Seizure - Bilateral Hand twitch - Headache - Visual Aura - Visual Phenomenon	Ongoing clinical trials evaluating the safety of the device and surgery
CORTIVIS	100 electrodes (1.0–1.5 mm in length)	4 mm x 4 mm base	Information not available	Information not available	In clinical trial for severe visual impairment with bilateral visual loss
ICVP	16 electrodes per module	2 mm x 2 mm	- No wires or connectors cross the scalp due to wireless nature - Camera images are communicated directly to brain	Information not available	In clinical trials to test the safety of the ICVP system and the feasibility of eliciting visual percepts in response to electrical stimulation in persons with blindness
AV-DONE	7 stimulation electrodes (50 µm diameter)	- The rod: 100 μm diameter - Cylindrical silicone board diameter: 2.0 mm. of the active tips of the stimulation electrodes is uncoated. The wires run parallel to each other. Scale bar = 1 mm	- Easy access to the optic nerve - Stimulate a wide visual field - Elicit small to large phosphenes using just one stimulating electrode	Information not available	Clinical study completed for 1 patient with RP