A system for obtaining biomechanical parameters of ocular tissue includes an air-puff module to deliver an air-puff stimulus onto the ocular tissue, and an imaging device operatively coupled to the air-puff module.

The air-puff module includes a transparent window at its front with a transparent through hole for delivering the air-puff stimulus. The hole is aligned with an imaging device optical axis, such that the air-puff stimulus delivered onto the ocular tissue can be centred on an apex of the ocular tissue and made collinear with the optical axis. The transparent window and through hole allow continuity of imaging of the ocular surface.

The imaging device captures the 3D coordinates of points distributed on an ocular tissue surface in groups of simultaneous points.

The system includes a component for selecting and changing location and distribution of captured points on the ocular tissue, and a processing component to process the points.

Provided herein are systems and methods to measure the intraocular pressure, ocular tissue geometry and the biomechanical properties of an ocular tissue, such as an eye-globe or cornea, in one instrument. The system is an optical coherence tomography subsystem and an applanation tonometer subsystem housed as one instrument and interfaced with a computer for at least data processing and image display. The system utilizes an air-puff and a focused micro air-pulse to induce deformation and applanation and displacement in the ocular tissue. Pressure profiles of the air puff with applanation times are utilized to measure intraocular pressure. Temporal profiles of displacement and/or spatio-temporal profiles of a displacement-generated elastic wave are analyzed to calculate biomechanical properties.

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

Configurations are disclosed for a health system to be used in various healthcare applications, e.g., for patient diagnostics, monitoring, and/or therapy. The health system may comprise a light generation module to transmit light or an image to a user, one or more sensors to detect a physiological parameter of the user's body, including their eyes, and processing circuitry to analyze an input received in response to the presented images to determine one or more health conditions or defects.

Provided herein are systems and methods to measure the intraocular pressure, ocular tissue geometry and the biomechanical properties of an ocular tissue, such as an eye-globe or cornea, in one instrument. The system is an optical coherence tomography subsystem and an applanation tonometer subsystem housed as one instrument and interfaced with a computer for at least data processing and image display. The system utilizes an air-puff and a focused micro air-pulse to induce deformation and applanation and displacement in the ocular tissue. Pressure profiles of the air puff with applanation times are utilized to measure intraocular pressure. Temporal profiles of displacement and/or spatio-temporal profiles of a displacement-generated elastic wave are analyzed to calculate biomechanical properties.

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.

An intraocular pressure (IOP) measurement system. An ultrasound pressure sensor is implantable in an eye, wherein the sensor has a sealed cavity that changes shape as a function of IOP of the eye. An ultrasound transmitter emits an incident ultrasound beam. A receiver produces an output signal in response to receiving a reflected ultrasound beam. A spectrometer 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.

A pneumatic esthesiometer adapted for measuring tactile sensitivity of a patient eye may include a pressurized gas supply system, a control system, and a pulse-conditioner. The pressurized gas supply system is configured to provide a flow of pressurized gases. The control system is configured to control the flow of pressurized gases.

Pumps for noncontact tonometry are provided. In one embodiment, a pump for noncontact tonometry includes a compression pump, a compression chamber, a first pressure sensor in communication with the compression chamber, a surge chamber, and a valve separating the compression chamber and surge chamber. The compression pump compresses a first volume of gas into the compression chamber. When the first pressure sensor detects a threshold pressure in the compression chamber, the valve opens and releases the gas into a surge chamber, where it combines with a gas residing in the surge chamber to form a puff of gas that escapes from the surge chamber through a flow-limiting nozzle. The components of the pump, which relies on passive rather than active components to create the controlled puff, can be assembled to have a profile that is portable and fit for home use.

A device for detecting motion of a surface includes a light source for emitting light, a focusing lens configured to focus the light, and a detector configured to receive the focused light reflected off the surface and to detect motion of a distribution pattern of the reflected light. The motion of the distribution pattern of the reflected light is indicative of the motion of the surface. A conic constant of the focusing lens is in the range from □1.5 to □0.5, and a diameter of the focusing lens is at least 60% of the distance from the focusing lens to a beam waist of the focused light. When the conic constant and the diameter are within the above-mentioned ranges, the device is suitable for handheld apparatuses for free-hand measurements of small motions of surfaces. A handheld apparatus can be for example an apparatus for detecting eye pressure.