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.

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.

A vision screening device for administering vision screening tests, and in particular a color vision screening test, to a patient is described herein. The vision screening device may include associated methods and systems configured to perform the operations of the vision screening tests. The device may include a first radiation source configured to generate color stimuli, a second radiation source separate from the first radiation source configured to emit near-infrared radiation, and a sensor configured to capture the near-infrared radiation emitted by the second radiation source, and reflected by an eye of a patient. The device may also be configured to cause color stimulus to be displayed to the patient, and determine measurement(s) of the eye of the patient in response to the color stimulus. The device may be further configured to analyze the measurements to generate a recommendation and/or diagnosis associated with the vision of the patient. The device may also be configured to display the recommendation and/or the measurements, along with additional screening data, to an operator conducting the vision test.

A vision screening device for administering vision screening tests, and in particular a color vision screening test, to a patient is described herein. The vision screening device may include associated methods and systems configured to perform the operations of the vision screening tests. The device may include a first radiation source configured to generate color stimuli, a second radiation source separate from the first radiation source configured to emit near-infrared radiation, and a sensor configured to capture the near-infrared radiation emitted by the second radiation source, and reflected by an eye of a patient. The device may also be configured to cause color stimulus to be displayed to the patient, and determine measurement(s) of the eye of the patient in response to the color stimulus. The device may be further configured to analyze the measurements to generate a recommendation and/or diagnosis associated with the vision of the patient. The device may also be configured to display the recommendation and/or the measurements, along with additional screening data, to an operator conducting the vision test.

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.

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.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, an electronic circuit and a display that presents one of virtual reality information, augmented reality information, or synthetic computer-generated 3-dimensional information. The device is configured for measuring saccades, pursuit tracking during visual pursuit, nystagmus, vergence, eyelid closure, or focused position of the eyes. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system uses a Fourier transform to generate a vertical gain signal and a horizontal gain signal.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, an electronic circuit and a display that presents one of virtual reality information, augmented reality information, or synthetic computer-generated 3-dimensional information. The device is configured for measuring saccades, pursuit tracking during visual pursuit, nystagmus, vergence, eyelid closure, or focused position of the eyes. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system uses a Fourier transform to generate a vertical gain signal and a horizontal gain signal.

An ophthalmic system for examining a subject eye of an examinee includes a plurality of examination units, a robot mechanism, and a controller. The plurality of examination units have housings different from each other, perform examinations different from each other, and include at least a first examination unit and a second examination unit. The robot mechanism has a holding unit that holds and releases either the first examination unit or the second examination unit, and a moving unit that is connected to the holding unit and moves three-dimensionally. A controller controls driving of the robot mechanism to adjust a relative positional relationship between the subject eye and the first examination unit or the second examination unit held by the holding unit. The first examination unit or the second examination unit is replaced to be held by the holding unit for performing a different examination on the subject eye.

An ophthalmic system for examining a subject eye of an examinee includes a plurality of examination units, a robot mechanism, and a controller. The plurality of examination units have housings different from each other, perform examinations different from each other, and include at least a first examination unit and a second examination unit. The robot mechanism has a holding unit that holds and releases either the first examination unit or the second examination unit, and a moving unit that is connected to the holding unit and moves three-dimensionally. A controller controls driving of the robot mechanism to adjust a relative positional relationship between the subject eye and the first examination unit or the second examination unit held by the holding unit. The first examination unit or the second examination unit is replaced to be held by the holding unit for performing a different examination on the subject eye.