An apparatus, worn over the eyes of a user, that restores visual clarity to the user in response to a change associated with a film of fluid over the apparatus. In an embodiment the apparatus includes a smart contact portion having at least a first convex surface, a second convex surface, and a concave surface. The apparatus further includes set of liquid thickness sensors embedded upon the first convex surface. The apparatus further includes an electrochemical storage device and a computing module. The apparatus further includes a plurality of ultrasonic transducers embedded upon the first convex surface. The apparatus further includes an electroactive lens structure embedded within central portion of the first convex surface. The apparatus further includes lens controllers that apply electrical signals to the electroactive lens structure to change at least one physical characteristic of the electroactive lens structure based on control signals from the computing module.

Systems configured to acquire temperature signals from an Abreu Brain Thermal Tunnel (ABTT), to analyze the temperatures signals, and to determine a condition of a human body from the analysis, and a method for doing the same, are described. In addition, systems for application of thermal signals to the ABTT for treatment of conditions are described.

The disclosed wearable may include (1) a plurality of electrodes dimensioned to interface with a skin surface of a user of an artificial reality system, wherein the electrodes are spaced a known distance from one another, (2) a signal generator communicatively coupled to one of the electrodes, wherein the signal generator injects a test signal into the skin surface of the user via the one of the electrodes, (3) at least one sensor communicatively coupled to another one of the electrodes, wherein the sensor measures the test signal as received by the another one of the electrodes, and (4) at least one processing device communicatively coupled to the sensor, wherein the processing device determines a current impedance of the skin surface based at least in part on the known distance and the measurement of the test signal. Various other systems and methods are also disclosed.

A contact lens system includes a shared antenna electrode, an accommodation actuator to provide variable optical power, and a controller coupled to the accommodation actuator and the shared antenna electrode. The controller including logic for arbitrating access to the shared antenna electrode between an impedance sensor and a communication circuit; selectively establishing an oscillator with the impedance sensor and the shared antenna electrode; correlating an oscillation condition of the oscillator to an accommodation setting; and adjusting the variable optical power of the accommodation actuator based upon the accommodation setting. An impedance across the shared antenna electrode varies based upon an amount an eyelid overlaps the contact lens system when the contact lens system is worn on an eye.

Systems configured to acquire temperature signals from an Abreu Brain Thermal Tunnel (ABTT), to analyze the temperatures signals, and to determine a condition of a human body from the analysis, and a method for doing the same, are described. In addition, systems for application of thermal signals to the ABTT for treatment of conditions are described.

This document describes a conformable substrate that includes a hydrogel having adhesion-promoting moieties, said adhesion-promoting moieties comprising one or more catechol groups. The conformable substrate includes an array of microelectrodes bonded to the hydrogel by the adhesion-promoting moieties via the one or more catechol groups. This document also describes a method for transfer printing of an electronic structure to a hydrogel. The method includes the steps of coating a donor substrate with a film of polyacrylic acid, crosslinking the film of polyacrylic acid in a solution comprising divalent ions, patterning a microelectrode array onto the crosslinked film of polyacrylic acid, laminating an adhesive hydrogel substrate onto the donor substrate coated by the crosslinked film of polyacrylic acid comprising the patterned microelectrode array, and separating the crosslinked film of polyacrylic acid from the donor substrate in a monovalent solution.

Intraocular lenses that include a central portion and one or more peripheral portions. The IOLs includes a sensor housing and a communication member, both of which are secured to the central portion.

Various techniques are disclosed to provide for improved human body temperature detection using thermal images of an inner canthus. In one example, a method includes capturing a thermal image of a human being using a thermal imager. The method also includes determining an uncompensated temperature measurement associated with an inner canthus of a face of the human being using corresponding pixels of the thermal image. The method also includes determining a correction term as a function of a distance between the thermal imager and the human being. The method also includes applying the correction term to the uncompensated temperature measurement to provide a corrected temperature measurement associated with the inner canthus to compensate for attenuation associated with the distance. Additional methods and systems are also provided.

a substrate configured to be positioned in the presence of a fluid; a first electrode comprising a conductive film disposed on the substrate; and a second electrode comprising the conductive film disposed on the substrate and spaced from the first electrode. The device may further include a current measurement circuit configured to: apply a voltage between the first electrode and the second electrode, wherein the voltage is in an electrochemical active range of the conductive film such that a portion of the conductive film dissolves into the fluid; and transmit, to a processor, a signal indicating a current measurement of an electrical current flowing through the fluid including the dissolved portion of the conductive film.

A wearable article includes: an annular casing that surrounds a space into which a body of a user is to be inserted; a light-emitting element that is provided in the casing, the light-emitting element emitting light towards the space; an imaging element that is provided in the casing, the imaging element capturing and obtaining an image of the space when the light-emitting element emits light; and an authentication circuit that authenticates the user based on a vein pattern obtained in advance and the image.