Devices, systems and methods are described for non-invasively monitoring and/or measuring or estimating intraocular pressure. Medical or diagnostic methods embodiments described herein include high resolution imaging of the sclera of one or both of a patient's eyes using digital photography or videography. The hardware employed may be for two-dimensional (2D) or three-dimensional (3D) imaging.

The present invention relates to a non-contact portable tonometry system and tonometry method using a difference in infrared intensity. A nozzle module receives compressed air from a compressed air supply source and sprays the same through an air spray port to a cornea of a subject, thus to cause corneal deformation. An infrared ray sensor is disposed in the nozzle module to emit infrared rays to the cornea and measure an amount of light reflected from the cornea. A controller converts the amount of light measured by the infrared ray sensor before and after the deformation of corneal into intraocular pressure.

A system and method for measuring biomechanical properties of tissues without external excitation are capable of measuring and quantifying these parameters of tissues in situ and in vivo. The system and method preferably utilize a phase-sensitive optical coherence tomography (OCT) system for measuring the displacement caused by the intrinsic heartbeat. The method allows noninvasive and nondestructive quantification of tissue mechanical properties. Preferably, the method is used to detect tissue stiffness and to evaluate its stiffness due to intrinsic pulsatile motion from the heartbeat. This noninvasive method can evaluate the biomechanical properties of the tissues in vivo for detecting the onset and progression of degenerative or other diseases and evaluating the efficacy of therapies.

Systems and methods are disclosed for facilitating the evaluation of eye health and vision. The system is a mobile system and comprises at least one diagnostic device for performing a vision diagnostic test, the device being a VR headset; a portable computer communicatively coupled to the at least one diagnostic device, the computer having hardware adapted to guide a patient through the test, to compile test data, and to transmit the test data via a data connection; and a server in communication with the computer via the data connection, the server gathering the test data and presenting test data to a physician so that treatment may be provided to the patient. The at least one diagnostic device may include multiple portable, handheld diagnostic devices.

An intraocular pressure measurement arrangement is disclosed for measuring pressure of an eye of a patient. The arrangement can include at least one source for producing mechanical waves of several frequencies from a distance to the eye of the patient to generate at least one surface wave to the eye, a detector for detecting at least one surface wave from a distance from the eye to extract surface wave information, and a device for determining pressure information of the eye based on the surface wave information.

A system for detecting a wave occurring in/on a membrane includes a source for directing an excitation signal obliquely to the membrane and a receiver for measuring interference between a first part of the excitation signal reflected off a front surface of the membrane and a second part of the excitation signal reflected off a rear surface of the membrane. The system includes a processing device for detecting the wave based on a change in the measured interference. The detection of the wave is based on changes caused by the wave in the optical length of a V-shaped part of a propagation path of the second part of the excitation signal, where the V-shaped part of the propagation path is inside the membrane.

An ophthalmologic apparatus that measures a value of intraocular pressure of an examinee's eye, based on a state of deformation of a cornea in applanation due to air blowing includes an air blowing unit that puffs air to the cornea and a control unit that controls an operation of the air blowing unit, wherein the control unit has a preliminary puffing mode in which preliminary puffing is executed such that the air blowing unit puffs the air in non-measurement of the value of intraocular pressure.

The eye examination kiosk and method may comprise a structure for rotating and/or translating ophthalmologic examination devices such as an auto-refractor, an auto-keratometer, a corneal topographer, a fundus camera, an external photo camera, a perimeter, a lensmeter, a specular microscope, a retinal and external eye imager, an Optical Coherence Tomographer (OCT), or a non-contact tonometer into a position such that they may be used for examination of a patient. The kiosk outer shell may comprise an opening allowing the ophthalmologic examination equipment to perform eye examinations of a patient. Eye examination results are transmitted to a remote location where they are read by a physician, who transmits examination findings and recommendations for follow up treatment to the patient. The results may include the identity of qualified physicians who practice geographically near the patient, or who are qualified to treat a patient for a specific condition indication.

In an approach to predicting physiological and behavioral states utilizing models representing relationships between driver health states and vehicle dynamics data, one or more computer processors capture one or more vehicle motion parameters. The one or more computer processors to capture one or more physiological parameters; identify contextual data associated with the one or more captured vehicle motion parameters and the one or more captured physiological parameters; predict one or more driving behavior parameters by utilizing one or more physical models fed with the one or more vehicle motion parameters and the identified contextual data; predict one or more driver health parameters by utilizing a model trained with the one or more captured physiological parameters and the identified contextual data; generate a risk assessment based on the one or more predicted driving behavior parameters and the one or more predicted driver health parameters.

A waveguide apparatus includes a planar waveguide and at least one optical diffraction element (DOE) that provides a plurality of optical paths between an exterior and interior of the planar waveguide. A phase profile of the DOE may combine a linear diffraction grating with a circular lens, to shape a wave front and produce beams with desired focus. Waveguide apparati may be assembled to create multiple focal planes. The DOE may have a low diffraction efficiency, and planar waveguides may be transparent when viewed normally, allowing passage of light from an ambient environment (e.g., real world) useful in AR systems. Light may be returned for temporally sequentially passes through the planar waveguide. The DOE(s) may be fixed or may have dynamically adjustable characteristics. An optical coupler system may couple images to the waveguide apparatus from a projector, for instance a biaxially scanning cantilevered optical fiber tip.