Foveated retinal prosthesis
AssigneeNano-Retina, Inc.
InventorRa'anan Gefen
Life of this patent
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Abstract
Apparatus is provided having an intraocular device for implantation entirely in a subject's eye, the intraocular device including: a photosensor array having a plurality of photosensors, each photosensor detects ambient photons and generates a signal in response thereto. A spatial density of the photosensors in a central portion of the array is greater than a spatial density of the photosensors in an outer portion of the array. The intraocular device additionally includes a plurality of stimulating electrodes and driving circuitry coupled to the photosensors, and configured to drive the electrodes to apply electrical pulses to a retina of the eye in response to the signals from the photosensors. Other applications are also described.
Claims13
Apparatus comprising an intraocular device configured to be implanted entirely in a subject's eye, the intraocular device comprising:
- a photosensor array comprising a plurality of photosensors, each photosensor configured to detect ambient photons and to generate a signal in response thereto, a spatial density of the photosensors in a central portion of the array being greater than a spatial density of the photosensors in an outer portion of the array;
- a plurality of stimulating electrodes;
- and
- driving circuitry, coupled to the photosensors, and configured to drive the electrodes to apply electrical pulses to a retina of the eye in response to the signals from the photosensors.
Apparatus comprising an intraocular device configured to be implanted entirely in a subject's eye, the intraocular device comprising:
- a photosensor array comprising a plurality of photosensors, each photosensor configured to detect ambient photons and to generate a signal in response thereto,
- an optical magnifying element coupled to the photosensor array and configured to provide a magnified image on some but less than all of the photosensors of the photosensor array;
- a plurality of stimulating electrodes;
- and
- driving circuitry, coupled to the photosensors, and configured to drive the electrodes to apply electrical pulses to a retina of the eye in response to the signals from the photosensors.
Apparatus comprising an intraocular device configured to be implanted entirely in a subject's eye, the intraocular device comprising:
- a photosensor array comprising a plurality of photosensors, each photosensor configured to detect ambient photons and to generate a signal in response thereto;
- an arrangement of stimulating electrodes, a spatial density of the electrodes in a central portion of the arrangement being lower than a spatial density of the electrodes in an outer portion of the arrangement, the arrangement being such that:
- (a) the outer portion surrounds the central portion, and (b) the central portion is large enough to contain therewithin a circle of diameter at least 100 um;
- and
- driving circuitry, coupled to the photosensors, and configured to drive the electrodes to apply electrical pulses to a retina of the eye in response to the signals from the photosensors.
Apparatus comprising an intraocular device configured to be implanted entirely in a subject's eye, the intraocular device comprising:
- a photosensor array, having a center thereof, and comprising a plurality of photosensors, each photosensor configured to detect ambient photons and to generate a signal in response thereto;
- an array of stimulating electrodes, having a center thereof, and coupled to the photosensor array;
- and
- driving circuitry, coupled to the photosensors, and configured to drive an electrode located at a first distance from the center of the electrode array to apply electrical pulses to a retina of the eye in response to a signal from a photosensor located at a second distance from the center of the photosensor array, the first distance being greater than the second distance.
Dependencies are inferred from the claim text.