Intraocular apparatus is provided for be implantation entirely in a subject's eye. The intraocular apparatus includes a photosensor array including a plurality of photosensors configured to receive an ambient image, and a power source, for powering the apparatus. The intraocular apparatus additionally including a flexible 0.4-3 mm electrical connector, connecting the photosensor array to the power source. Other applications are also described.

Apparatus is provided that includes a retinal stimulator, which includes an electrode array including electrodes, which are configured to be coupled to a retina of a subject's eye; and driving circuitry, configured to drive the electrodes to apply currents to the retina. The retinal stimulator further includes an elastic anchor that is coupled to the retinal stimulator and is configured to anchor the electrodes to the retina without the elastic anchor penetrating the retina. Other embodiments are also described.

Disclosed herein is a sub-retinal prosthesis using a multi-photodiode sensing technology. The sub-retinal prosthesis using a multi-photodiode sensing technology includes: a pixel array including a plurality of pixels of which k pixels are set as a unit group; and a digital controller controlling the pixel array to activate one of the k pixels as a stimulation electrode and activate the other k-1 pixels as return electrodes, wherein the unit group includes k photodiodes, a sensing circuit and a current driver, the sensing circuit outputs a stimulation parameter using currents each generated by the k photodiodes according to irradiation of light as an input, and the current driver outputs a stimulation current corresponding to the stimulation parameter.

The present invention is a new configuration for the external portion of a visual prosthesis in the form of a visor or glasses, including a frame supported by a user's nose and ears. The video processing unit is adapted to be connected by temple portions of the visor and rest on the user's upper back behind the user's neck, or behind the user's head. Controls for the video processor are on one or both temple portions of the visor.

An implantable device has a hermetically sealed enclosure, an electronic device within the hermetically sealed enclosure, and a plurality of feedthrough conductors in mechanical contact with the hermetically sealed enclosure and exposed outside of the hermetically sealed enclosure. The implantable device also has a flexible substrate with a plurality of therapy contacts, and a plurality of continuously conductive elements extending along the flexible substrate from the array of therapy contacts and terminating at a plurality of connection pads. Each of the continuously conductive element is integral with at least one therapy contact and at least one connection pad to electrically communicate the noted therapy contact(s) and the noted connection pad(s). The thickness of each continuously conductive element may be between about 5 and 190 microns. The implantable device also has a plurality of mechanical welded couplings that each couple at least one of the connection pads.

The present invention is an improved spatial fitting and training system for a visual prosthesis. The system of the present invention maps projected locations of percepts, where a person perceives a percept from a visual prosthesis to the intended location of the percepts. The projected location may vary over time. This test results can be used to correct a visual prosthesis or spatially map the visual prosthesis.

The present invention is a method for measuring stable and reproducible electrode-tissue impedance, comprising preconditioning an electrode-tissue interface. Further aspect of the invention is a stimulation system for a visual prosthesis generating a stimulation signal to precondition the electrode-tissue interface, comprising a computer; software, loaded in the computer, adapted to perform a stimulating method for a visual prosthesis having a plurality of electrodes; a video processing unit; and an implanted neuron-stimulator.

A device for contacting and/or electrically stimulating biological tissue by means of at least one electrode has at least a first unit, on which the at least one electrode is provided and which is configured for implantation in a human or animal body, a second unit, for supplying the first unit with electrical energy, and at least a first and a second conductive track for the voltage supply of the first unit. The first and second conductive tracks are respectively electrically connected to the first and second units and are at different voltage potentials. Spatially between the first and second conductive tracks, at least a first additional conductive track is arranged that is functionally not involved in the voltage supply of the first unit.

A method, including the action of operating a sense prosthesis, such as a retinal implant, according to a first operating regime while the recipient has a first fatigue level, and operating the sense prosthesis according to a second operating regime while the recipient has a second fatigue level that is greater than the first fatigue level.

A retinal prosthesis system can comprise: a flexible substrate; a nanowire light detector which is placed on the substrate, and comprises one or more nanowires of which the resistance changes according to the applied light; one or more micro-electrodes which are placed on the substrate, are electrically connected to the nanowire light detector, and come in contact with retinal cells; and an electric power supply source for applying electric power to the nanowire light detector and the micro-electrodes. The retinal prosthesis system can be implemented into a very thin and flexible substrate type high resolution retinal system by manufacturing a nanowire light detector on a substrate in which micro-electrodes are implemented.