The present example embodiment relates generally to creating a specific nanostructure on a substrate to improve the angle independence of a surface plasmon resonance mode. It may comprise a metamaterial structure comprising nanostructures located in a pattern on or within a substrate. The nanostructures may be paraboloid shaped and periodic.

Systems and methods according to present principles use touchscreen-based devices such as tablet computers or other computers incorporating touchscreens to both run the test and to receive input/output. It will be understood that any such device may be employed, so long as a display, means for user input, and means for eye tracking, are provided, and so long as its display screen is large enough to effectively test visual field.

A system for measuring at least one parameter of an eye. The system includes a probe detachably arranged within a housing, wherein the probe is operable to impact a surface of the eye with a predefined impact attribute, at least one coil operable to maintain the probe within the housing, to release the probe towards the surface of the eye and to retract the probe into the housing, a probe vibration means operable to induce vibration to the probe, a measuring means for measuring a change in vibration of the probe upon impact on the surface of the eye and a controller configured to use the measured change in vibration of the probe to determine the at least one parameter of the eye.

A system for measuring at least one parameter of an eye. The system includes a probe detachably arranged within a housing, wherein the probe is operable to impact a surface of the eye with a predefined impact attribute, at least one coil operable to maintain the probe within the housing, to release the probe towards the surface of the eye and to retract the probe into the housing, a probe vibration means operable to induce vibration to the probe, a measuring means for measuring a change in vibration of the probe upon impact on the surface of the eye and a controller configured to use the measured change in vibration of the probe to determine the at least one parameter of the eye.

A contact lens according to an embodiment of the present disclosure includes a lens unit to be placed on an eyeball and a mesh-like or meandering linear communication electrode provided in all or a portion of the lens unit.

Embodiments include systems and methods for determining blood pressure of a user. Embodiments can include a restriction device that is configured to apply an external pressure cycle to a blood vessel of the user and a pressure sensing device that is configured to detect pressures within the blood vessel during the external pressure cycle and output a signal indicative of the detected pressures. Embodiments can also include a processing device that is configured to receive the signal from the pressure sensing device, determine a first set of pressure values corresponding to minimum pressure values for each pulse pressure wave and determine a second set of pressure values corresponding to pressure upstrokes that occur during a descending pressure phase of a respective pulse pressure wave. The system can determine a blood pressure parameter of the user based on the first set of pressure values and the second set of pressure values.

Embodiments include systems and methods for determining blood pressure of a user. Embodiments can include a restriction device that is configured to apply an external pressure cycle to a blood vessel of the user and a pressure sensing device that is configured to detect pressures within the blood vessel during the external pressure cycle and output a signal indicative of the detected pressures. Embodiments can also include a processing device that is configured to receive the signal from the pressure sensing device, determine a first set of pressure values corresponding to minimum pressure values for each pulse pressure wave and determine a second set of pressure values corresponding to pressure upstrokes that occur during a descending pressure phase of a respective pulse pressure wave. The system can determine a blood pressure parameter of the user based on the first set of pressure values and the second set of pressure values.

Systems and methods for wireless stimulation of biological tissue (e.g. nerves, muscle tissue, etc.) and, in one exemplary implementation, to therapy for glaucoma based on the wireless administration of energy to the eye of a mammalian subject (e.g. human, rodent, etc.) to reduce an elevated intraocular pressure (IOP) involving the use of a multi-coil wireless power transfer assembly. The multi-coil wireless power transfer assembly may be used alone or in combination with a stimulation coil that can be implanted in the eye of a mammalian subject or within a contact lens worn by a mammalian subject.

An intraocular pressure (IOP) measurement system. An optical pressure sensor is implantable in the cornea of an eye, wherein the sensor has a sealed cavity that changes shape as a function of IOP of the eye. An optical transmitter that is outside of the eye emits an incident optical beam. A receiver that is also outside of the eye produces an output signal in response to receiving reflections of the incident beam from the sensor. A processor is configured to estimate the IOP of the eye based on processing the output signal of the receiver. Other aspects are also described and claimed.

An intraocular pressure (IOP) measurement system. An optical pressure sensor is implantable in the cornea of an eye, wherein the sensor has a sealed cavity that changes shape as a function of IOP of the eye. An optical transmitter that is outside of the eye emits an incident optical beam. A receiver that is also outside of the eye produces an output signal in response to receiving reflections of the incident beam from the sensor. A processor is configured to estimate the IOP of the eye based on processing the output signal of the receiver. Other aspects are also described and claimed.