Abstract: An ophthalmologic apparatus of an embodiment example includes a front image acquiring device, a first search processor, and a second search processor. The front image acquiring device is configured to acquire a front image of a fundus of a subject's eye. The first search processor is configured to search for an interested region corresponding to an interested site of the fundus based on a brightness variation in the front image. The second search processor is configured to search for the interested region by template matching between the front image and a template image in the event that the interested region has not been detected by the first search processor.

Abstract: The present disclosure is directed to lenses, devices, methods and/or systems for addressing refractive error. Certain embodiments are directed to changing or controlling the wavefront of the light entering a human eye. The lenses, devices, methods and/or systems can be used for correcting, addressing, mitigating or treating refractive errors and provide excellent vision at distances encompassing far to near without significant ghosting. The refractive error may for example arise from myopia, hyperopia, or presbyopia with or without astigmatism. Certain disclosed embodiments of lenses, devices and/or methods include embodiments that address foveal and/or peripheral vision. Exemplary of lenses in the fields of certain embodiments include contact lenses, corneal onlays, corneal inlays, and lenses for intraocular devices both anterior and posterior chamber, accommodating intraocular lenses, electro-active spectacle lenses and/or refractive surgery.

Abstract: Disclosed are a mobile device and method which include acquiring, by an image acquisition unit installed in a mobile device, an image of eyes of a patient while light provided by a light source reflects from an optical surface of the eyes of the patient; and obtaining, by a processor installed in the mobile device, ocular misalignment measurements, including a magnitude and a direction of ocular misalignment in the eyes of the patient, using the acquired image or set of images.

Abstract: An ophthalmic imaging apparatus comprising: an illumination light source and an optical assembly for directing light from the light source into an eye of a subject; a photosensor array comprising a plurality of photosensors positioned for acquiring images of portions of a fundus of the eye; an objective lens positioned along an imaging axis intersecting a point on the fundus of the eye wherein the objective lens is positioned for refracting light that has been reflected by the fundus to form an image of the fundus on an image plane of the objective lens such that the image plane is positioned away from the photosensor array; and a microlens array comprising a plurality of microlenses wherein the microlens array is spaced away from and positioned behind the image plane and wherein the microlens array is positioned in between the image plane and the photosensor array such that each microlens in the array projects a different view of the image formed at the image plane thereby forming an array of elemental image

Abstract: A method is provided for the user-specific calibration of a display apparatus, wearable on the head of a user, for an augmented presentation, wherein A), in a basic calibration step, the position of the at least one eye is ascertained relative to the display apparatus in all three spatial directions in the state where the display apparatus is worn on the head of the user and said position is saved in the display apparatus as adjustment data in such a way that an image generating module of the display apparatus generates the image taking account of the adjustment data.

Abstract: A wide field fundus camera is disclosed to implement multiple illumination beam projectors and to capture multiple retinal images at a various viewing angles to mimic wide field retinal examination with an indirect ophthalmoscope. The wide field fundus camera may incorporate a consumer image recording device with fast auto focusing so as to make the device quick to respond and easy to use. The wide field fundus camera may include narrow and broad slit beam illuminations to enhance autofocusing and imaging through less transparent crystalline lens and through haze due to Purkinje reflections from crystalline lens surfaces. Control of multiple illumination beam projectors in a programmable manner can be used to assess alignment of each illumination beam projector with the eye and to capture said multiple retinal images. Furthermore, a method is disclosed to montage said multiple retinal images into a single montage and to remove haze and reflections.

Abstract: A wearable ophthalmic device is disclosed. The device may include a head-mounted light field display configured to generate a physical light field comprising a beam of light. The head-mounted light field display may direct the beam of light into a user's eye, thereby producing a retinal reflex. The device may also include a head-mounted photodetector array configured to receive the retinal reflex and to generate numerical image data. The device may also include a light field processor configured to control the light field display, to analyze the retinal reflex using the numerical image data, and to determine an optical prescription for the user's eye based on the analysis of the retinal reflex.

Abstract: The invention relates to a device and a method for displaying the axis of astigmatism of an eye, in which an observation unit is used to observe the eye and, using a display unit, the orientation of the axis of astigmatism of the eye is displayed. A sensor unit generates sensor data which indicate a modification to the alignment of the observation unit relative to the eye. A calculation unit updates the displayed orientation of the axis of astigmatism with the aid of the sensor data, and issues it as the current orientation of the display unit.

Abstract: A system and method for conducting a refractive examination of an eye of a patient, has a communication device with a communication module that connects to the internet, a processor that is programmed to connect to a remote computer via the communication module and which has a display screen, a microphone and a speaker. The remote computer has a data storage device that stores images of eye charts. The communication device is mounted in a virtual reality headset configured to be worn by the patient and has at least one screen through which the display screen of the communication device is viewable. The communication device displays images in the form of the eye charts to the patient, who communicates through the communication to a remote examiner who conducts the refractive examination using multiple different eye charts to determine the prescription of the patient.

Abstract: Systems and methods are provided for eye health and vision examinations. A customer diagnostic center is configured to generate customer examination data pertaining to an examination of a customer's eye. The customer diagnostic center provides a user interface for communicating with a customer and ophthalmic equipment for administering tests to the customer. A diagnostic center server is configured to receive the customer examination data from the customer diagnostic center over a network and allow the customer examination data to be accessed by an eye-care practitioner. A practitioner device associated with the eye-care practitioner is configured to receive the customer examination data from the diagnostic center server and display at least a portion of the customer examination data to the eye-care practitioner. Customer evaluation data is generated pertaining to the eye-care practitioner's evaluation of the customer examination data. An eye health report is provided to the customer via the network.

Abstract: A method of providing a graphical output may include scanning at least a portion of a user's face using a sensor; generating a depth map using the scan; and determining a similarity score between the depth map and a set of stored biometric identity maps that are associated with a registered user. In response to the similarity score exceeding a threshold, the user may be authenticated as the registered user. The method may further determine a corrective eyewear scenario, select a display profile that is associated with the corrective eyewear scenario, and generate a graphical output in accordance with the selected display profile.

Abstract: Disclosed herein are methods and apparatus for making a determination about an eye in ambient lighting conditions comprising detecting ambient light reflected out of an eye of a subject from a retina of the eye of the subject and making a determination about the eye of the subject based upon the reflected ambient light.

Abstract: Disclosed herein are computer systems for, in part, image processing. Also disclosed herein are systems for processing ocular images of multiple imaging modalities to detect ocular diseases. Also disclosed herein are method comprising systems as described herein.

Abstract: Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

Abstract: According to one embodiment, an apparatus includes a processor and a memory. The processor performs a learning process of a neural network including a batch normalization layer. The processor sets up the neural network. The processor updates, in the learning process, a weight parameter and a normalization parameter, used in the normalization of the batch normalization layer, alternately or at different timings.

Abstract: Embodiments of the present invention provide a computer-implemented method of determining a parameter indicative of dark adaptation of an eye, comprising receiving threshold data from a dark adaptometer indicative of a perception threshold of the eye, fitting first and second models to the threshold data, wherein the first model is associated with a first dark adaptation mechanism and the second model is associated with the first dark adaption mechanism and a second dark adaptation mechanism, determining a confidence associated with the fitting of each of the first and second models to the received threshold data, iteratively repeating the steps of receiving the threshold data and fitting the first and second models in dependence on the determined confidence, and outputting an indication of one or more parameters indicative of dark adaptation of an eye associated with one or both of the first and second models.

Abstract: A measurement apparatus for measuring a laser focus spot size, which includes a two-dimensional image detector and an imaging system which forms a magnified image of a focus spot located an object plane onto the image detector. The imaging system includes at least an objective lens. A sealed liquid container is secured over a part of the objective lens such as the optical surface of the objective lens is immersed in the liquid (e.g. water) within the container. The liquid container has a window through which the laser beam enters. An image processing method is also disclosed which processes the image obtained by the image detector to obtain the focus spot size while implementing an algorithm that corrects for the effect of ambient vibration.

Abstract: A method and a device allow to determine the contrast sensitivity threshold of the eyes of a user in an automatic manner without requiring an experienced examiner or active attention of the user. The method includes: a) providing a dataset of track data including data of eye movements, wherein the eye movements are stimulated to elicit an optokinetic nystagmus in the eyes of the user and wherein the track data are related to a particular contrast and spatial frequency of the stimulus; b) estimating at least one velocity component of the eye movement; c) comparing the velocity component with a velocity threshold; d) comparing a fraction of the track data which exceed the velocity threshold with a fractional threshold for the dataset, which is classified as eliciting the optokinetic nystagmus at the particular contrast of the stimulus; and e) determining the contrast sensitivity threshold of the eyes of the user.

Abstract: Methods for dispensing eyeglasses are disclosed. The methods involve making a subjective refraction and an objective refraction and Sending the information to a calculation computer to combine both retractions to calculate the person's prescription. The person's prescription is subsequently sent to a manufacturing location separate from the calculation computer for manufacture of the lenses.

Abstract: A method of predicting a blood glucose level of a user, comprising: obtaining, by an image capturing device, an iris image of the user; training a first convolutional neural network of a computing device using the iris image as an input to obtain a classification of the iris image; training a second convolutional neural network of the computing device using the classification and the iris image to extract an iris feature vector; and predicting, by the computing device, the blood glucose level of the user based on the iris feature vector.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: An ophthalmologic apparatus of an embodiment example includes a front image acquiring device, a first search processor, and a second search processor. The front image acquiring device is configured to acquire a front image of a fundus of a subject's eye. The first search processor is configured to search for an interested region corresponding to an interested site of the fundus based on a brightness variation in the front image. The second search processor is configured to search for the interested region by template matching between the front image and a template image in the event that the interested region has not been detected by the first search processor.

Abstract: A method is disclosed for using a precision ultrasound scanning device to image the anterior segment of the human eye, automatically locate the scleral spur, and, using the scleral spur as a fiduciary, to automatically make measurements in front of and behind the iris. The scleral spur can be used as a fiduciary to make measurements that characterize the normal and abnormal shapes of components within this region of the anterior segment of the eye. One or more of the measurements of the iridocorneal angle and the anterior chamber depth can be related to other measurements behind the iris including the iris lens contact distance, the iris zonule distance and the trabecular ciliary process distance. Over a period of time, these measurements can change and can indicate a change, or be a precursor for a change, of intraocular pressure (IOP), and therefore can determine an earlier onset of glaucoma.

Abstract: Methods, apparatus, and systems for performing an ophthalmic diagnostic test are disclosed. In one aspect, a head-wearable device for administering an ophthalmic test to a subject can comprise a head-wearable frame for mounting the device onto the subject's head, and a light seal configured for coupling to the frame so as to isolate at least one eye of the subject from ambient light when the device is worn by the subject.

Abstract: Systems and methods for surgical training are provided. The system may include an operating display console for a first surgeon to view a video feed of a surgery while the first surgeon performs the surgery. The system may also include a training display console for a second surgeon to view the video feed of the surgery while the surgery is performed. The system may further include a controller that interfaces with the operating display console and the training display console. The training display console may include a training interface for pausing the video feed displayed on the training display console, and for switching from a display mode to a simulation mode for simulating one or more surgical steps of the surgery.

Abstract: The present disclosure provides an improved method for photobleaching an eye of a subject. The disclosed method may be used in a number of psychophysical test methods, including, but not limited to, measurement of dark adaptation. The improved method for photobleaching involves at least one of the following improvements: (i) the use of a bleaching light emitting a particular wavelength of light or a tailored spectrum of wavelengths; (ii) restricting or otherwise spatially tailoring the region of the retina that is subject to photobleaching; and (iii) utilizing a bleaching light having an intensity that is at or below the intensity of ambient daylight. The present disclosure additionally provides a combination of a photobleaching light and an apparatus to administer a psychophysical test suitable for use in practicing the disclosed methods.

Abstract: A technique for adjusting the brightness values of images to be displayed on a stereoscopic head mounted display is provided herein. This technique improves the perceived dynamic range of the head mounted display by dynamically adjusting the pixel intensities (also known generally as “exposure”) of the images presented on the head mounted display based on a detected gaze direction. The head mounted display includes an eye tracker that is able to sense the gaze directions of the eyes. The eye tracker, head mounted display, or a processor of a computer system receives this information, determines an intersection point of the eye gaze and a screen within the head mounted display and identifies a gaze area around this intersection point. Using this gaze area, the processing system adjusts the pixel intensities of an image displayed on the screen based on the intensities of the pixels within the gaze area.

Abstract: A blood flow measurement apparatus of an embodiment includes an image acquisition unit, an image region specification unit, a measurement location setting unit, a scanner, and a blood flow information generation unit. The image acquisition unit acquires an image of a living body. The image region specification unit analyzes the image to specify a plurality of blood vessel regions. The measurement location setting unit sets a plurality of measurement locations that intersects with the plurality of blood vessel regions. The scanner scans a plurality of cross sections of the living body corresponding to the plurality of measurement locations using optical coherence tomography. The blood flow information generation unit generates blood flow information on the living body based on data acquired through the scan.

Abstract: A method for treating a patient having a vestibular malady is provided. The method comprises (a) diagnosing the patient as having a vestibular malady; and (b) prescribing eyewear to the patient as a treatment of the vestibular malady, either alone or in conjunction with undertaking vestibular rehabilitation while wearing the eyewear. The eyewear (201) has a first lens (205) which extends over the field of vision of a first eye, wherein the first lens has first (207) and second (209) distinct optical regions. The eyewear imparts vision to the first eye which is characterized by a central vision having a first optical quality and a peripheral vision having a second optical quality.

Abstract: A method for determining a dioptric parameter includes: first, a test optical element having a dioptric function having a specific value of the dioptric parameter to be determined is provided and the person looks at a visual target using the test optical element; second, evaluation data and certitude data are collected, the evaluation data being indicative of the visual assessment expressed by the person looking at the visual target using the test optical element and certitude data being indicative of the degree of certainty of the person upon expressing the visual assessment. The first and second steps are repeated by varying the value of the dioptric parameter. For each value of the dioptric parameter tested a value a degree of certainty of the person is determined. The value of the dioptric parameter of the person is determined based on the values of degree of certainty of the person.

Abstract: Methods and apparatus for corneal imaging and sensing are provided. Apparatus capable of utilizing single or multiple frequency emissions at terahertz (THz) wavelengths to create reflectivity maps of the cornea in either a contact or non-contact modes are also provided. Methods of obtaining data from THz imaging and sensing apparatus about the corneal tissue-aqueous humor system, including information about the corneal tissue water content (CTWC) and/or the central corneal thickness (CCT) are likewise provided. Methodologies may use multiple transfer functions (frequencies) in obtaining simultaneous data about CTWC and CCT. Methods using frequency sweeping to allow for determination of CTWC and CCT may also be utilized. Methods may also be used to assess CTWC using multiple bandwidths at the same frequency, or multiple frequencies at the same bandwidth. Methods may use data from CTWC measurements to aid in the diagnosis of various corneal and brain disorders.

Abstract: Automated and objective methods for quantifying a retinal characteristic include segmenting an optical coherence tomography image into a plurality of layered retinal regions, and quantifying the retinal characteristic for each region as normalized to a range defined by the characteristic value in the vitreous region and in the retinal pigment epithelium region. Such methods are useful for detecting occult ocular pathology, diagnosing ocular pathology, reducing age-bias in OCT image analysis, and monitoring efficacy ocular/retinal disease therapies.

Abstract: Techniques related to vision correction are disclosed. The techniques involve establishing a visual model associated with a patient. The visual model includes data related to a quality of the patient's vision. A boundary is established as a function of the data associated with the visual model. The boundary is indicative of an area to be corrected within the patient's vision. A retinal map is established as a function of the boundary. An image from a camera associated with the patient is captured and corrections are applied to the image based on the retinal map to generate a corrected image. The corrected image is presented to the eye of the patient.

Abstract: A system for examination of an eye of a subject includes a laser for irradiating a select portion of the retina with a short pulse light having a wavelength of about 800 nm to about 1400 nm at an intensity effective to stimulate two photon induced isomerization of visual pigments in the select portion of the retina of the subject's eye, and an input device to permit the subject to input a reaction or response of the subject to the irradiating light.

Abstract: This invention relates to testing and determining a threshold value used in psychometric testing in field of ophthalmology, neuro-ophthalmology and visual neuropsychology. The method comprises at least the following steps: a) displaying a symbol with a distinctive visual appearance and with a stimulus level to a display at a stimulus time-point, the symbol selected from a group of possible symbols, b) monitoring if a response is given on a response device with multiple choices, each choice representing a possible visual appearance or location of the symbol, and b1) if a response is not given in a response time-limit from the stimulus time-point, increasing the stimulus level of the symbol by a predetermined step and returning to step a), or b2) if a response is given in the response time-limit from the stimulus time-point, comparing the response to symbol displayed in step a), and c1) if the response does not correspond to the symbol displayed in step a), producing, e.g.

Abstract: Certain embodiments of the present invention are directed to therapeutic intervention in patients with eye-length-related disorders to prevent, ameliorate, or reverse the effects of the eye-length-related disorders. Embodiments of the present invention include methods for early recognition of patients with eye-length-related disorders, therapeutic methods for inhibiting further degradation of vision in patients with eye-length-related disorders, reversing, when possible, eye-length-related disorders, and preventing eye-length-related disorders. Additional embodiments of the present invention are directed to particular devices used in therapeutic intervention in patients with eye-length-related disorders.

Abstract: Systems, devices, methods, and kits for monitoring one or more physiologic and/or physical signals from a subject are disclosed. A system including a head mounted display to monitor one or more physiologic signals from the face or head of the subject is disclosed. A method for analyzing an ocular parameter of the subject to determine a sympathetic and a parasympathetic outflow thereto is disclosed.

Abstract: Methods and systems for measuring the asymmetrical image quality or image features of an intraocular lens (IOL), design, refractive and diffractive designs, such as IOLs with Extended tolerance of astigmatic effects are provided by through-focus and meridian response. Measurements are taken at various focal plane and meridian positions to allow for determination of areas of better performance away from 0 meridian or the start position and meridian.

Abstract: Automatic, adaptive stimulus generation includes receiving, at a network device that is associated with a network or system, analytics data that provides an indication of how the network or system is responding to a set of test stimuli introduced into the network or system to facilitate an analysis operation. The network device analyzes the analytics data based on an intended objective for the analysis operation and generates control settings based on the analyzing. The control settings control creation of a subsequent stimulus to be introduced into the network or system during subsequent execution of the analysis operation.

Abstract: The present invention provides methods, systems and equipment for acquiring and extracting information using a biological feature. The method for acquiring information using a biological feature—includes: acquiring first data by a terminal; controlling, by the terminal, a light source to generate an intensity-variable light signal according to the first data, and projecting the intensity-variable light signal on an iris; acquiring, by the terminal, first iris information at least comprising first iris contraction information, in which the first iris contraction information is generated by the iris according to the intensity-variable light signal and comprises a first iris contraction activity; acquiring, by the terminal, second iris information at least comprising second iris contraction information; and extracting, by the terminal, second data from the second iris contraction information according to a preset rule.

Abstract: Described herein is an apparatus and method for generating a pain score for a patient. The method includes the steps of generating a PLR response signature for each drug of a plurality of drugs and further initiating a light stimulus to the patient, and measuring a corresponding PLR response. The method includes initiating a neuro-stimulus to the patient, the neuro-stimulus being initiated over a set of frequencies, each frequency being associated with a unique intensity, and stimulating a unique nerve fiber type of the patient, and measuring a PRD response of the patient for the initiated neuro-stimulus. Further, the method includes determining, for each nerve fiber type, a threshold response based on the measured PRD, determining a weight for each threshold response based on the PLR response, and combining the determined weight for each threshold response to obtain a pain score for the patient.

Abstract: The present invention discloses a method for making an aspheric vision correction lens with controlled peripheral defocus. The present invention also discloses a vision correction lens worn outside the eye, an orthokeratology lens and an intraocular lens made according to the method. The present invention further discloses a diagnosis and treatment method that utilizes myopic peripheral defocus to control and retard myopia growth.

Abstract: An accommodating intraocular lens with variable optical power, comprising at least two optical elements, at least one of which is movable relative to the other in a direction perpendicular to the optical axis, wherein the optical elements form a lens with different optical power at different relative positions of the optical elements. At least two of the optical elements of the lens comprise at least one additional optical correction surface, which correction surfaces are adapted for simultaneous variable correction of one or more optical aberrations of the natural eye in which the degree of correction depends on the relative position of the optical elements.

Abstract: An eye movement-based methodology and assessment tool may be used to quantify many aspects of human dynamic visual processing using a relatively simple and short oculomotor task, noninvasive video-based eye tracking, and validated oculometric analysis techniques. By examining the eye movement responses to a task including a radially-organized appropriately randomized sequence of Rashbass-like step-ramp pursuit-tracking trials, distinct performance measurements may be generated that may be associated with, for example, pursuit initiation (e.g., latency and open-loop pursuit acceleration), steady-state tracking (e.g., gain, catch-up saccade amplitude, and the proportion of the steady-state response consisting of smooth movement), direction tuning (e.g., oblique effect amplitude, horizontal-vertical asymmetry, and direction noise), and speed tuning (e.g., speed responsiveness and noise). This quantitative approach may provide fast and results (e.g.

Abstract: The present invention relates generally to lens design and, more particularly, to a method for designing, evaluating and optimizing ophthalmic lenses and laser vision correction in order to optimally manage issues resulting from, or related to, halos.

Abstract: A terminal device (300) includes a projection target holding unit that holds projection information to be projected by an image projection device (200), a storage unit that stores position information indicating a position on the retina of a user (P) at which the projection information is to be projected, a position information acquisition unit that acquires the position information from the storage unit, an image data generation unit that generates image data (D) of an image (202G) that projects the projection information at the position indicated by the position information, and an image output processing unit that outputs the image data (D) to the image projection device (200).

Abstract: Embodiments are disclosed for using an apparatus to perform pupil identification. An example method includes measuring, by a light sensor of the apparatus, an ambient infrared light level. The example method further includes determining whether the measured ambient infrared light level exceeds a threshold level. The example method further includes performing pupil identification on a user based on the determination of whether the measured ambient infrared light level exceeds the threshold level. In this regard, the example method involves performing bright pupil identification in an instance in which the measured ambient infrared light level exceeds the threshold level, and performing dark pupil identification if not. Corresponding apparatuses and non-transitory computer readable storage media are also provided.

Abstract: The present invention provides a merchandise sales service device based on dynamic scene change, a merchandise sales system based on dynamic scene change, a method for selling merchandise based on dynamic scene change, and a non-transitory computer readable storage medium having computer program recorded thereon. That is, it is possible to transmit information about a commodity and image information of the commodity to user equipment by efficiently configuring images and dynamically changing the images in a commodity purchase procedure. Accordingly, a user can acquire detailed information about a commodity and carefully purchase the commodity, similar to actually purchasing the commodity at an offline store. Further, it is possible to reduce the rate of returning of purchased commodities for the seller of the commodities.