Various embodiments of an eye imaging apparatus can be used to image the posterior and/or anterior portions of the eye. In some embodiments, the eye imaging apparatus can comprise a light source, imaging optics, an image sensor, and a handgrip comprising a bump shaped to fit with a palm of an operator. In some embodiments, the eye imaging apparatus can comprise a light source, imaging optics, an image sensor, and a control button. The control button can comprise a multi-functional button and/or a control button activated by the index finger. In some embodiments, the eye imaging apparatus can comprise a housing structure comprising a double shell structure with an inner shell and an outer shell, which can be configured to facilitate heat management. In some embodiments, the eye imaging apparatus can comprise a removable front imaging module, a main module, and an interconnect locking structure configured to enable repeated removal of the front imaging module from and re-attachment of the front imaging module to the main module. Various embodiments also comprise a carrying case for an eye imaging apparatus.

The present disclosure provides a system and method for monitoring phototoxicity caused by vitreous visualization device (VVD) illumination during ophthalmic surgery. The systems and methods determine the cumulative amount of optical energy incident on the retina, which corresponds to phototoxicity, the distance between a cutter of the VVD and the retina, and areas where the vitreous has been removed, or any combination thereof. The disclosure further provides a method for monitoring and preventing phototoxicity caused by VVD illumination during ophthalmic surgery. The method may further include determining the distance between a cutter of the VVD and the retina, and determining areas where the vitreous has been removed based on focus areas of the retina that the plurality of light spots has contacted.

An intraocular pressure sensor is presented that achieve very low power consumption. The intraocular pressure sensor takes the form of an implantable assembly configured to be implanted in an eye of a subject. Specifically, the implantable assembly is comprised of a capsular tension ring attached to a flexible printed circuit board. The flexible printed circuit board includes a cutout that is sized to encircle the pupil of the eye and is C shaped. One or more electrical components are also mounted onto the flexible printed circuit board. One such component is a voltage reference generator that is implemented by a circuit which provides inherently low process variation and low power consumption.

A method to analyze an eye with a mobile device includes capturing an eye image using a mobile device camera coupled to a processor; capturing gyroscope or accelerometer readings as image metadata to aid in orientation normalization and image registration by the processor; extracting features of the eye using the image corrected with image metadata; and applying the extracted features to a deep learning neural network to detect eye focus data or eye gaze data.

A refraction device determines a refraction end point to provide corrective optics for a test subject. The device includes an adjustable optical system providing corrective optics to the test subject and an adjustable viewing target disposed along an optical path such as to be viewable through the adjustable optical system by a test subject. The adjustable viewing target includes a directional indicator linked synchronously to at least two choices of corrective optics presented to the test subject.

The methods and systems provided can automatically determine an Arteriolar-to-Venular diameter Ratio, AVR, in blood vessels, such as retinal blood vessels and other blood vessels in vertebrates. The AVR is an important predictor of increases in the risk for stroke, cerebral atrophy, cognitive decline, and myocardial infarct.

An image analysis method and an image processing apparatus are disclosed. The image analysis method comprises receiving a retinal image and identifying at least one candidate object from a plurality of objects within the retinal image. Singular spectrum analysis SSA is performed on the at least one candidate object, to obtain an intensity profile along at least one cross-sectional line through the candidate object. At least one feature from the intensity profile is extracted for classification of the at least one candidate object.

Systems and methods are disclosed for assessing user physiology via eye tracking data. One method includes determining a plurality of visual assessments; determining, for each assessment of the plurality of visual assessments, a data schema, where at least one data schema is associated with more than one assessment of the plurality of visual assessments; storing the determined data schema; receiving user eye tracking data associated with a selected visual assessment of the plurality of visual assessments; determining, of the stored data schema (a), a selected stored data schema associated with the selected visual assessment; categorizing the received eye tracking data based on the selected stored data schema; computing quantitative data based on the categorized data and data related to one or more individuals other than the user; generating a report of user physiological function based on the computed quantitative data; and outputting the report to a web portal.

An optometer may include a test object including a point light source and a collimator lens configured to collimate light from the point light source. The optometer may generate, for a user viewing the point light source through the collimator lens, an image of the point illumination source on a retina of an eye when the eye is in a rest position without triggering the eye to focus. A user-perceived deviation of the image of the point source from an in-focus image is indicative of visual refractive error of the user. A user may use the device with a naked eye to gauge visual refractive error of the eye or may use the device with corrective lenses to gauge the efficacy of the corrective lenses.

Provided relates to a device for measuring ocular strabismus. More specifically, the ocular strabismus measuring device according to the present invention includes a covering part, a covering control device, and a coupling part. The device allows for the alternate cover test by selectively covering a variable translucent film controlled by the covering control device. It can be attached to and detached from an eye-tracking device, enabling alternate covering for each eye individually. The device transmits data on the covering state along with binocular eye deviation data to the eye-tracking device. The covering part is easily attachable and detachable, making the device useful for measuring strabismus in infants and children, and it allows for continuous use by replacing the covering part in case of damage or wear.