Electromyographic sensing and vision modification

Abstract

Adjustable vision modification using various systems, devices, and processes are provided. Adjustable vision modification may include sensing ocular related physiological activities of a user and making adjustments in an ocular device or ocular system to change the vision of the user. Various sensors and sensor locations may be employed in embodiments to sense or otherwise obtain these physiological activities. Likewise, various ocular devices, ocular processes, and ocular systems may be employed for improving vision.

1 - 19 . (canceled) 
     
     
         20 . An ocular system comprising:
 an adjustable intraocular lens;   a first pair of electric sensors, the first pair of electric sensors comprising a driving electrode and a sensing electrode; and   a processor configured to receive electrical signals from the sensing electrode of the first pair of electric sensors and, using received electrical signals from at least a sensor of the first pair of electrical sensors, provide instructions for controlling focus of the adjustable intraocular lens.   
     
     
         21 . The ocular system of  claim 20  wherein the first pair of electric sensors are configured for implantation around an eye of a user. 
     
     
         22 . The ocular system of  claim 20  wherein the received electrical signals are action potential signals. 
     
     
         23 . The ocular system of  claim 20  further comprising:
 a second pair of electric sensors, the second pair of electric sensors comprising a driving electrode and a sensing electrode, and 
 wherein the processor is also configured to receive electrical from the sensing electrode of the second pair of electric sensors and, using received electrical signals from at least a sensor of the second pair of electrical sensors provide instructions used to control focus of the adjustable intraocular lens. 
 
     
     
         24 . The ocular system of  claim 21  wherein at least one electric sensor of the first pair of electric sensors, has a surface area between 0.1 mm 2  and 8.0 mm 2  and is configured to be implanted in an ocular location near the ciliary muscle of a user. 
     
     
         25 . The ocular system of  claim 20  wherein at least one electric sensor of the first pair of electric sensors is configured to detect at least impedance or resistance changes occurring in the ciliary muscle during accommodation and to generate corresponding signals for receipt by the processor. 
     
     
         26 . The system of  claim 20  further comprising a pair of haptic sensor arms extending away from the adjustable intraocular lens, wherein the pair of haptic sensor arms have a parabolic or conchoidal shape and are positioned to center the intraocular lens within a user's capsular bag when the intraocular lens is implanted in the eye of the user. 
     
     
         27 . The system of  claim 26  wherein at least one sensor of the first pair of electric sensors is positioned on a haptic sensor arm such that when the intraocular lens is implanted in the eye of a user, the sensor is positioned in an intravitreal space. 
     
     
         28 . The system of  claim 20  wherein the processor carries out steps of determining action potential signals from the received electrical signals, determining the need for accommodative correction based on the determined signals, providing a drive signal to affect a change in said adjustable intraocular lens, the change at least partially restores the user's lost accommodation. 
     
     
         29 . The system of  claim 20  wherein at least one electric sensor of the first pair electric sensors is configured to wirelessly transmit an electric signal to the processor. 
     
     
         30 . The system of  claim 20  wherein the electric sensors of the first pair of electric sensors have protrusions adapted for interface with the ciliary muscle. 
     
     
         31 . The system of  claim 20  wherein the processor controls focus of the intraocular lens by using accommodative spike amplitude and resting spike amplitude of a ciliary muscle signal sensed by the first pair of electric sensors as well as accommodative spike frequency and resting spike frequency of a ciliary muscle signal sensed by the first pair of electric sensors. 
     
     
         32 . An ocular system comprising:
 an adjustable intraocular lens;   a first mated pair of electric sensors, the mated pair of electric sensors comprising an anode sensor and a cathode sensor; and   a processor configured to receive action potential signals sensed by a sensor of the mated pair of electric sensors and to control focus of the adjustable intraocular lens using the received action potential signals.   
     
     
         33 . The system of  claim 32  wherein the first mated pair of electric sensors are positioned and configured to detect at least impedance changes occurring in a ciliary muscle during accommodation. 
     
     
         34 . The system of  claim 33  wherein the impedance changes are used as input for the adjustable intraocular lens and wherein the adjustable intraocular lens is a variable focus lens. 
     
     
         35 . The system of  claim 32  wherein each electric sensor has a surface sized between 0.5 mm 2  and 8.0 mm 2 , and each electric sensor is configured to be implanted in at least one of the following ocular locations of a user of the ocular system: the episcleral, the intrascleral, the suprachoroidal adjacent to the ciliary muscle, the ciliary sulcus, the intracapsular bag, or the infrachoroidal of the user of the ocular system. 
     
     
         36 . The system of  claim 32  wherein the at least one sensor of the first mated pair of electric sensors is configured to wirelessly transmit a received signal to the processor. 
     
     
         37 . The system of  claim 32  wherein each sensor of the mated pair of electric sensors is positioned on a haptic sensor arm. 
     
     
         38 . The system of  claim 32  wherein the processor is also configured with instructions to separate a received non-accommodative, resting signal from a sensor of the first mated pair of sensors, from an accommodative, active signal from a sensor of the first mated pair of sensors. 
     
     
         39 . The system of  claim 32  wherein focus of an optic of the adjustable intraocular lens is continuously variable. 
     
     
         40 . The system of  claim 32  wherein at least one sensor of the first mated pair of sensors is tuned to receive action potential signals between the range of 10 microvolts (μV) and 250 microvolts (μV). 
     
     
         41 . An ocular system comprising:
 an adjustable intraocular lens;   a first pair of implantable electric sensors, the first pair of electric sensors comprising a driving electrode and a sensing electrode, the driving electrode configured to provide a driven current and frequency;   a second pair of implantable electric sensors, the second pair of electric sensors comprising a driving electrode and a sensing electrode, the driving electrode configured to provide a driven current and frequency; and   an implantable processor configured to receive electrical signals from the sensing electrode of the first pair of electric sensors and the second pair of electric sensors, and, using received electrical signals from at least a sensor of the first pair of electric sensors and the second pair of electric sensors, provide instructions for controlling focus of the adjustable intraocular lens.