A fundus imaging apparatus according to embodiments of the present invention includes an optical unit configured to guide light from a fiber light source to a fundus of a subject eye, a wavefront sensor capable of measuring the wavefront of reflected light guided via the optical unit after the light from the fiber light source is reflected on the fundus, a wavefront correction device provided on an optical path extending between the fiber light source and the subject eye to correct the wavefront of the reflected light, an APD that can receive the reflected light and capture an image of the fundus, and a processing and control unit configured to acquire thickness information about an optical diffusive layer of the fundus and determine a correction value to be used when the wavefront correction device corrects the wavefront of the reflected light based on the acquired thickness information.

Techniques for a visual disability detection system that employs virtual reality to assess visual performance of a patient based on activities of daily living are described. The virtual reality platform can integrate the testing of different components of visual function based on activities of daily living to provide a direct and clinically relevant measure of the impact of any visual disability on a patient's daily life. By simulating daily tasks for evaluation of visual disability, clinicians can better understand from a patient's perspective how visual impairment affects their daily tasks and quality of life.

An ophthalmic apparatus is capable of communicating with a PDA device provided with a display unit and includes a main body that includes an image-capturing unit, the image-capturing unit obtaining a moving image of an eye to be examined (target eye) based on light returned from the target eye which is illuminated, the moving image of the target eye used by the ophthalmic apparatus for obtaining, based on an examination of the target eye, information regarding the target eye, a driving unit that drives the main body, a transmission unit that transmits, before the information regarding the target eye is obtained, a moving image signal of the obtained moving image to the PDA device, a reception unit that receives a control signal from the PDA device during transmission of the moving image signal, and a control unit that controls the driving unit based on the received control signal.

A vision screening apparatus conducts a photorefraction ocular screening test to generate refractive error data. Based on the refractive error data, a Snellen equivalent is determined. An evaluated person distance from the vision screening apparatus is also determined and used to generate an adjusted optotype size. The vision screening apparatus displays the optotype, adjusted for the Snellen equivalent and the evaluated person distance.

An ophthalmologic apparatus includes an input portion configured to receive an ID that identifies at least one of an examiner or a subject; a storage portion configured to store examiner data with regard to a rotational position of a supporting arm member (support portion) about a vertical axis and a horizontal axis, the examiner data being predetermined to correspond to the ID; and a drive control portion configured to select the examiner data stored in the storage portion based on the ID received by the input portion, and to control a drive portion based on the examiner data and a detection result of the position detection portion so that the rotational position of the supporting arm member about the vertical axis and the horizontal axis coincides with a predetermined rotational position.

A system for preventing motion sickness resulting from virtual reality or augmented reality is disclosed herein. In one embodiment, the system includes a virtual reality or augmented reality headset configured to be worn by a user, the virtual reality or augmented reality headset configured to create an artificial environment and/or immersive environment for the user; at least one fluidic lens disposed between an eye of the user and a screen of the virtual reality or augmented reality headset; and a fluid control system operatively coupled to the at least one fluidic lens. In another embodiment, the system includes at least one tunable prism disposed between an eye of the user and a screen of the virtual reality or augmented reality headset, the at least one tunable prism configured to correct a convergence problem associated with the eye of the user.

A head-mounted video camera, a processor, and a display are integrated within the head-mounted device worn by the user. The head-mounted device is configured to capture images of the environment and subject those images to specialized processing in order to diagnose and/or make up for deficiencies in the user's eyesight. Different modes of operating the device are provided that enable the user to configure the device for a specific application. The modes of operation include at least an assistive mode, a diagnostic mode, and a therapeutic mode. Each mode of operation may include further options, where each option is dedicated to a specific processing approach specific to a condition that may afflict the user, ranging from contrast sensitivity issues to strabismus.

An ophthalmic and associated methods are disclosed. In one example a plurality of ophthalmic tools are located on a single cart for collecting ophthalmic data. Data may be recorded in a standardized format to aid in comparison between records in a database. In one example the standardized format facilitates fast and more accurate diagnoses of ophthalmic conditions.

Handheld optical imaging devices and methods are disclosed herein. In an embodiment, an optical coherence tomography (OCT) system includes an OCT probe that is configured as a hand-held probe for imaging an eye of a patient, the OCT probe includes: an OCT optical system configured to direct a source OCT signal to the eye and configured to capture OCT scan signal returning from the eye; and an on-probe display carried by a handle, wherein the on-probe display is configured to display imaging data of the eye of a patient to an operator during OCT imaging.

A measuring method for measuring rotation characteristics of an eyeball of a subject includes: showing display information on a display screen, at a position separated from a reference position, the display screen being shown in front of the eyeball of the subject by a display device that is secured to a head of the subject, the reference position being where a front line of sight of the eyeball of the subject who looks forward straightly, crosses the display screen; changing a direction of a line of sight from the eyeball to the display information by switching the display information to other contents while changing a displayed position of the display information; and judging whether the subject can recognize the contents of the display information at the changed position, to measure the rotation characteristics of the eyeball.