Abstract: In an eye fundus surface expansion observation screen, a surface moving image that is a moving image showing the surface of a predetermined region in a subject's eye is enlarged and displayed. In an eye fundus tomography expansion confirmation screen, a tomographic image showing the tomography of the subject's eye, which corresponds to a position selected from the surface moving image, is enlarged and displayed.

Abstract: A method for calculating the values of an intraocular lens to be implanted, wherein the results of numerous cataract operations are taken into account in the calculation for intraocular lenses to be implanted in the future. At least the corneal topography, the length of the eye and the depth of the anterior chamber are determined pre-operatively, the values of the IOL to be implanted are calculated by means of ray-tracing, and at least the corneal topography, the length of the eye, the depth of the anterior chamber and the objective, wavefront-based residual refraction are determined post-operatively. The measurement values determined pre-operatively and post-operatively are used to optimize the surgically-induced astigmatism and the post-operative anatomical lens position for calculating the values of IOLs to be implanted in the future.

Abstract: A video oculography system for calculation and display of Corrective Secondary Saccades Analysis is disclosed. A method for Objective Diagnostics of at least one of traumatic brain injury, Internuclear Opthalmopligia, Ocular Lateral Pulsion, Progressive Supernuclear Palsy And Glissades comprises the steps of using a VOG system to calculate corrective saccades. The video oculography based system for the subject is configured to collect eye images of the patient in excess of 60 hz and configured to resolve eye movements smaller than at least 3 degrees of motion. The video oculography based system collects eye movement data wherein at least one fixation target is presented to the subject in a defined position configured to yield a voluntary saccadic eye response from at least one eye of the patient. The latency, amplitude, accuracy and velocity of each respective corrective saccade and totals latency and accuracy is calculated.

Abstract: Various embodiments of a device for performing a gaze field sobriety test are disclosed. The device includes a housing. A light source is affixed in or on the housing. The light source generates light during at least a portion of the gaze field sobriety test. A speaker positioned in or on the housing generates sounds during at least a portion of the gaze field sobriety test. A power source is coupled to the speaker and the light source. An input is positioned on the housing. The input is selectable by a test administrator to initiate an audible sound through the speaker at a predetermined time interval during at least a portion of the gaze field sobriety test. The audible sound provides an indication to the test administrator during the gaze field sobriety test to assist in proper performance of the gaze field sobriety test.

Abstract: A scanning laser ophthalmoscope for scanning the retina of an eye is provided comprising a light source emitting a beam of light, scan relay elements, wherein the light source and the scan relay elements provide a two-dimensional scan of the light beam which is transferred from an apparent point source at a pupillary point of the eye to the retina of the eye, and a static aberration correction element (30) which has a shape defined to provide correction of aberrations of at least some of the scan relay elements and a location within the ophthalmoscope chosen to provide correction of aberrations of at least some of the scan relay elements, which location maintains transfer of the beam of light from the apparent point source at the pupillary point of the eye to the retina of the eye. The present solution further provides an aberration correction element and a method of determining a shape of the aberration correction element.

Abstract: The invention relates to an instrument for simulation of multifocal ophthalmic corrections, comprising two optical channels with different optical power values in the beams coming from the object observed, wherein at least one channel comprises a Badal system. This instrument simultaneously provides images of objects near and far focused. The system provides the same optical magnifications for each channel, regardless of the optical power thereof, and produces superimposed retinal images with different degrees of focus which, unlike other devices, are all of the same size. The instrument allows simulating different optical powers for near vision and different refractive corrections for distant vision.

Abstract: Systems and methods for tracking a head position of a user include obtaining digital images of the user's head, processing the images to locate anatomical structures beneath the visible surface, and using those determined locations as inputs to a computing device. In an embodiment, images of a user's face are processed to identify the irises of the eyes, identify pixels along a boundary between each iris and the surrounding sclera, determine an ellipse defined by the identified iris-sclera boundary pixels, determine a distance-to-pixel ratio based on a pixel length of a long axis of such an ellipse compared to a known or presumed diameter of the iris, locating the iris in a three-axis coordinate system, determining an optical axis vector of the eye in the three-axis coordinate system, and calculating a center of the eyeball based on the optical axis vector and a known or presumed eyeball radius.

Abstract: A system measures macular pigment of a macula of a human eye of a subject. The system comprises a light source having a first light and a second light that modulate at variable frequencies, an input device for receiving an input indicating the frequency at which the user perceives the modulation of the first light and a second light, a display device, at least one processor, and one or more memory devices. The one or more memory devices storing instructions that, when executed by at least one processor, cause the system to (i) display, on the display device, test data corresponding to the user's inputs from the input device, (ii) determine whether the test data are valid or invalid through a curve-fitting algorithm, (iii) automatically indicate that the test data are valid or invalid.

Abstract: A method of determining at least one selection parameter for selecting an intraocular lens to be inserted into an eye; the method comprises reading, by a data processing system, data indicative of an axial position of at least a portion of an anterior surface of an at least partially empty capsular bag of the eye, relative to an optical axis of the eye. The method further comprises determining an axial position parameter, which is representative of the axial position of the portion of the anterior surface, depending on the data. The method further comprises determining the at least one selection parameter for selecting the intraocular lens depending on the determined position parameter.

Abstract: Detecting position information related to a face, and more particularly to an eyeball in a face, using a detection and ranging system, such as a Radio Detection And Ranging (“RADAR”) system, or a Light Detection And Ranging (“LIDAR”) system. The position information may include a location of the eyeball, translational motion information related to the eyeball (e.g., displacement, velocity, acceleration, jerk, etc.), rotational motion information related to the eyeball (e.g., rotational displacement, rotational velocity, rotational acceleration, etc.) as the eyeball rotates within its socket.

Abstract: A method and associated apparatus for validating testing procedure in objective ophthalmic eye testing is implemented for eye evaluation applications requiring subject compliance with eye fixation to a visual target.

Abstract: A video oculography based neuro-otologic testing and evaluation apparatus and associated method comprises the steps of: Obtaining images of the subject's eyes with a digital camera; Selectively displaying visual stimulus to the subject on a display; Generating each visual stimulus to be displayed from a controller; Receiving and storing data signals from each digital camera in the controller; Calculating eye related data from the digital camera images and visual stimulus; Displaying the eye related data to users; Generating a video synchronization signal by the controller associated with each visual stimulus which identifies when the display is displaying the associated visual stimulus; Receiving and coupling the video synchronization signal with at least the eye data from the digital camera; and Synchronizing calculations based upon the eye data and the visual stimulus by the controller.

Abstract: Method of determining configuration of interferential filtering elements for an optical device having an optical substrate for a user, includes: providing a first set of parameters representative of at least one main line of sight of the user; determining a first selected range of angles of incidence based on the first parameters; providing a second set of parameters characterizing, for the user, a range of wavelengths to be at least partially inhibited; determining a first selected range of wavelengths of incident light to be at least partially inhibited, based on the second parameters; and configuring a first selective interferential filtering element and a first zone of a surface of the optical substrate based on the first selected range of angles of incidence and wavelengths such that the first selective interferential filtering elements inhibit, at a first rate of rejection, transmission of the first selected range of wavelengths of incident light.

Abstract: An ophthalmological analysis system for examining an eye, in particular in the region of a front eye section of an eye includes first and second analysis systems obtaining sectional images of the eye. The first analysis system includes a projection device and a monitoring device arranged relative to each other according to the Scheimpflug rule. The second analysis system is an optical coherence interferometer. A processing device processes a first image data set obtained by the first analysis system and a second image data set obtained by the second analysis system to supplement the first image data set, at least partially, with data of the second image data set.

Abstract: An optical apparatus applied to ophthalmology detection is disclosed. The optical apparatus includes an image capturing unit, a data comparing unit, a detection unit, a location determining unit, and a data output unit. The image capturing unit captures images of different portions of a face of a person to be tested to obtain a plurality of face images. The data comparing unit compares the plurality of face images with a built-in database. The detection unit detects on an eye of the person to be tested. The location determining unit automatically determines whether the eye detected by the detection unit is left-eye or right-eye. The data output unit selectively outputs a detection result of the detection unit, a comparing result of the data comparing unit, and/or a determining result of the location determining unit.

Abstract: There is provided a method of monitoring retinopathy in a subject. The method involves measuring autofluorescence of a retina in response to high intensity blue light and infra-red reflectance of the anterior region of an eye in response to high intensity infra-red light of the subject over a total time period to obtain an autofluorescence intensity profile and an infra-red reflectance intensity profile. The autofluorescence intensity profile and infra-red reflectance intensity profile are processed to obtain a pupillary light reflex measurement that is used to assess the retinopathy status of the retina.

Abstract: Provided is a snapshot spectral domain optical coherence tomographer comprising: a light source providing a plurality of beamlets; a beam splitter, splitting the plurality of beamlets into a reference arm and a sample arm; a first optical system that projects the sample arm onto multiple locations of a sample; a second optical system for collection of a plurality of reflected sample beamlets; a third optical system projecting the reference arm to a reflecting surface and receiving a plurality of reflected reference beamlets; a parallel interferometer that provides a plurality of interferograms from each of the plurality of sample beamlets with each of the plurality of reference beamlets; an optical image mapper configured to spatially separate the plurality of interferograms; a spectrometer configured to disperse each of the interferograms into its respective spectral components and project each interferogram in parallel; and a photodetector providing photon quantification.

Abstract: The invention provides a method and system for non-invasive analysis. In particular the inventive system relates optical techniques involving infra-red, visible or ultra violet radiation for imaging and analyzing surface and sub-surface structure of tissue and components of the eye. Embodiments of the invention further include Optical Coherence Tomography (OCT) techniques for sub-surface imaging and analysis, and incorporate instruments such as ophthalmoscopes, fundus cameras, for non-invasive imaging and analysis.

Abstract: Systems, contact lenses and methods that facilitate antenna communication via sensor impedance modulation are provided. In one aspect, a system can include a contact lens and a radio frequency (RF) reader. The contact lens can include a substrate; an RF antenna, disposed on or within the substrate; and a sensing component, disposed on or within the substrate, and directly coupled to the RF antenna, wherein the RF antenna is configured to change impedance value as a sensed value of the sensing component changes. The RF reader is external to the contact lens, and configured to interrogate the RF antenna with an RF signal. The RF reader can receive a reflected RF signal from the RF antenna in response to the interrogation. The magnitude, phase and/or a frequency of the reflected RF signal can be based on the impedance value of the RF antenna.

Abstract: An image processing apparatus comprises: a fundus image obtaining unit configured to obtain a fundus image of an eye to be examined; a detection unit configured to detect positions of an optic papilla and macular region of the eye to be examined from the fundus image; and an obtaining position determination unit configured to determine, as an obtaining position where a tomographic image of the optic papilla of the eye to be examined is obtained, a position crossing a line passing through the position of the optic papilla and the position of the macular region.

Abstract: The present invention relates to a wavefront sensor using a pair of screens, each having a two-dimensional array of circular apertures, to achieve Moiré effects, and its use to measure the slope of a wavefront.

Abstract: Provisioned is a selecting unit configured to select a bright spot image corresponding to a reflected light beam reflected by the cornea of the subject eye from among a plurality of bright spot images on the basis of a positional relationship between a first bright spot image formed from a plurality of bright spot images corresponding to a first light beam in a first direction and a second bright spot image corresponding to a second light beam in a second direction different than the first direction, and a calculating unit configured to calculate a state of alignment between the subject eye and a measuring unit using the bright spot image selected from the first bright spot images.

Abstract: Angle multiplexed optical coherence tomography systems and methods can be used to evaluate ocular tissue and other anatomical structures or features of a patient.

Abstract: An ophthalmic device includes an acquisition unit configured to acquire a transillumination image of a pupil of a subject eye, and a determining unit configured to determine whether or not the subject eye includes an intraocular lens, based on the acquired transillumination image.

Abstract: A method of measuring and analyzing an ocular response in a subject comprising the steps of: Providing a video oculography based system for the subject with the system configured to collect eye images in excess of 60 hz and configured to resolve eye movements smaller than at least 3 degrees of motion; Collecting eye data with the video oculography based system wherein at least one stimulus is presented to only one eye of the subject and configured to yield a pupil eye response from at least one eye of the subject; Calculating pupilometry measurements from the eye data, wherein the pupil measurements are calculated independently for the subject's left and right eyes for each stimulus presented to the subject, and wherein comparative left and right pupilometry measurements from the eye data are calculated; analyzing a subject's ocular response based upon at least one of the calculated pupilometry measurements.

Abstract: An optical system for measuring an observed object includes an illuminant component, an imaging component, and an optical component. The illuminant component generates a measuring light. The optical component including a mirror and a beam splitter is located between the illuminant component and the imaging component. The mirror is located between the illuminant component and the observed object, the beam splitter is located between the mirror, the observed object, and the imaging component. The measuring light is projected to the observed object via the mirror and beam splitter, and an imaging light that has been generated from the illuminant component and reflected by the observed object is projected to the imaging component via the beam splitter, the imaging light and the measuring light intersect at the beam splitter. The present invention also provides a measurement method.

Abstract: Methods and compositions are disclosed to quantitatively measure in vivo blood vessel diameter, blood velocity, and other flow dynamics. Such methods and compositions can optimize therapeutic interventions designed to prevent or reduce the risk of cardiovascular and blood disorders. In one aspect, the methods and apparatus involve calculating blood vessel characteristics from a two dimensional image of a blood vessel in the conjunctiva of a subject's eye. In another aspect, a series of temporal images of a blood vessel are obtained to determine blood flow properties. The apparatus can include, for example, a biomicroscope, an illuminating light source and a high speed camera to acquire the series of temporal images with the data then analyzed by a programmed processor.

Abstract: There is provided an inexpensive ophthalmologic imaging apparatus having favorable operability in anterior ocular segment imaging and fundus imaging. In an ophthalmologic imaging apparatus which includes a focus lens located in an optical system, a focus lens drive unit configured to drive the focus lens, and a focusing operation unit configured to designate the drive amount of the focus lens, and has a fundus imaging mode of imaging a fundus and an anterior ocular segment imaging mode of imaging an anterior ocular segment, the drive amount of the focus lens by the focus lens drive unit is changed in accordance with a selected imaging mode and a focusing operation amount in the focusing operation unit.

Abstract: Embodiments of this invention relate to the generation of wavefronts for measurements, diagnostics, and treatment planning for ophthalmic applications. In some embodiments, a wavefront generator generates light having a uniform wavefront, which is focusable on the retina of an emmetropic eye by the normal function of the emmetropic eye. In some embodiments, the wavefront generator can generate light having a custom wavefront which is not focusable on the retina of the emmetropic eye. In some embodiments, the wavefront generator can receive information relating to an optical aberration of the eye, generate a custom wavefront, and project light having this custom wavefront, which in combination with the optical aberration of the eye is focusable on the retina.

Abstract: An imaging system includes an eye interface device, a scanning assembly, a beam source, a free-floating mechanism, and a detection assembly. The eye interface device interfaces with an eye. The scanning assembly supports the eye interface device and scans a focal point of an electromagnetic radiation beam within the eye. The beam source generates the electromagnetic radiation beam. The free-floating mechanism supports the scanning assembly and accommodates movement of the eye and provides a variable optical path for the electronic radiation beam and a portion of the electronic radiation beam reflected from the focal point location. The variable optical path is disposed between the beam source and the scanner and has an optical path length that varies to accommodate movement of the eye. The detection assembly generates a signal indicative of intensity of a portion of the electromagnetic radiation beam reflected from the focal point location.

Abstract: An imaging apparatus includes changing unit for changing a positional relation of irradiation positions of a plurality of measuring beams to be radiated onto an object. The imaging apparatus includes scanning unit for scanning the plurality of measuring beams in the positional relation which has been changed by the changing unit, and acquiring unit for acquiring an optical coherence tomographic image of the object on the basis of the plurality of measuring beams.

Abstract: A method of testing visual performance includes determining a difficulty rating for each of a plurality of visual recognition tests. The method further includes displaying one of the visual recognition tests to a subject and receiving from the subject a response to the visual recognition test. After receiving the response to the visual recognition test, a subsequent visual recognition test is selected to have a difficulty rating determined based on the response received from the subject, the subsequent visual recognition test is displayed, and a response is received from the subject. The subsequent visual recognition tests are repeated until a predetermined number of responses is reached. A visual performance score is determined based on the set of responses received from the subject and the difficulty ratings for the visual recognition tests displayed to the subject is then output.

Abstract: An ophthalmologic apparatus is configured to determine a direction in which a target that is used to adjust a working distance comes into focus based on an influence of astigmatism contained in a cornea reflection image of an eye to be examined.

Abstract: A contact lens assembly has a central lens and a circumscribing flange, the lens having an eye contact surface shaped generally to a radius of curvature of a cornea of an eye. The flange comprises a sterile sponge-like liquid absorbent flexible material having a central aperture for fitting snugly about an outer circumference of the lens and extending radially outward therefrom. The flange may include an inner attachment ring for attachment to the outer circumference of the central contact lens.

Abstract: The invention relates to a device for selecting contact lenses within a cabinet arranged to receive a plurality of contact lenses, the device including a storage data device for storing data based on measurements from an auto refractometer; and a data processor device associated with a calculation module for identifying a contact lens on the basis firstly of data from the auto refractometer as previously stored in the storage device, and secondly of additional data relating to the contact lens that is to be identified and that was previously input by the user, the data processor device associated with said calculation module also being arranged to identify the location of the lens within the cabinet. The invention also relates to an associated method.

Abstract: An ophthalmic observation apparatus includes an illumination light supplier which supplies illumination light, of substantially parallel light rays, toward an examinee's eye including an eyeground and an anterior chamber angle, an imager which captures an image of the eye which is illuminated by the illumination light, a rotary driver which rotates the illumination light supplier and the imager about a specified center, a cornea curvature measurer which measures a curvature of a cornea of the examinee's eye, and a controller which sets a curvature center of the cornea as the specified center based on the measured curvature of the cornea. The controller drives the rotary driver to rotate the illumination light supplier and the imager about the specified rotational center and controls the imager to capture an image of the eyeground and the anterior chamber angle illuminated by the illumination light.

Abstract: Systems and methods for reducing the effects of motion on functional optical coherence tomography (OCT) imaging are described. Embodiments including post-processing and motion tracking are presented. A preferred embodiment in which functional OCT data is collected and analyzed for motion as a multiple scan unit is described. An extension of the invention to the collection of large field of view or montaged functional OCT data sets is also presented.

Abstract: In an ophthalmic apparatus, reflected light from an eye to be examined, illuminated by an observation light source emitting continuous light, is split by a light splitting unit to enter an optical viewfinder, and a fundus image where an examiner can observe the fundus is provided by the optical viewfinder. An imaging unit sets the light quantity of the observation light source by using a moving image obtained by imaging the split and reflected light. After completing the setting of the light quantity, the imaging unit moves the light splitting unit from an optical axis, illuminates the fundus by driving the imaging light source, and obtains a still image.

Abstract: A module for use with a mobile device to measure an aberration of a patient's eye includes a light shaft having a proximal end and a distal end, and a light source. The light shaft includes a first plurality of optical components arranged to direct light along a first light path from the light source to the proximal end, and a second plurality of optical components arranged to direct light along a second light path from the proximal end to a light detector of the mobile device. A connector at the distal end includes at least one guide component for positioning the distal end adjacent to the light detector. When the distal end is positioned adjacent to the light detector, the first plurality of optical components directs light along the first light path and the second plurality of optical components directs light along the second light path.

Abstract: An ophthalmic photographing apparatus or method receives light returned from an eye to be examined, calculates a plurality of temporally continuous photometric values based on a light receiving result in the receiving, and determines whether or not the eye is to be photographed, based on the plurality of calculated photometric values.

Abstract: Method and system for treating of visual impairment associated with misalignment between eyes of a patient is described. The invention allows to obtain electronically of an image of an object at which one eye of the patient is staring, calculating angular deviation between staring direction of this eye and the second eye and displaying before the second eye the image after it has been electronically processed so as to correct the angular deviation and to obtain the image, which would be perceptible by the brain as a single three dimensional stereoscopic image.

Abstract: Improved indices for the diagnosis and evaluation of conditions affecting the eye. Specifically, the indices include an Enhanced Epithelial Irregularity Factor (eEIF) for the diagnosis and evaluation of conditions such as dry eye syndrome (DES), Bowman's Ectasia Index (BEI), including enhanced BEI (eBEI) and BEI-Max, and Bowman's Relative Thinning (BRT) Index for the diagnosis and evaluation of ectatic conditions such as keratoconus, pellucid marginal degeneration, post-refractive surgery ectasia, and keratoglobus, and Descemet's Membrane Thickening Index (DMT), Descemet's Rejection Index (DRI), and Descemet's Membrane Irregularity Factor (DIF) for the diagnosis and evaluation of conditions such as keratoplasty rejection and failure and Fuchs' dystrophy.

Abstract: A device for non-invasive monitoring of an eye position and ocular movements of a patient having: a housing body (2) having at least one through opening (2a); a plurality of light sources (3) housed in said housing body (2); a plurality of sensor means (4) housed in said housing body (2); deflector means (6) for invisible radiation (RL) supplied, in use, by said plurality of light sources (3) and reflected by said eye (O) under examination; support means (8) that can be adjusted for said housing body (2); at least one program data processing and control unit (9). The support means (8) can be adjusted in such a way that the through opening (2a) of the housing body (2) can be placed at the eye (O) under examination so that the invisible radiation hits the eye (O) frontally.

Abstract: The invention relates to an arrangement with a spectacle lens having a changeable optical effect and with an effect-setting apparatus for setting the optical effect of the spectacle lens on the basis of intended-setting data. A memory apparatus stores first intended-setting data for setting a first predetermined optical intended effect, which was established from a first refraction measurement on an eye of a spectacles wearer for whom the spectacle lens is destined, and for storing second intended-setting data for setting a second predetermined optical intended effect, which was established from a second refraction measurement on the eye, and also a supply apparatus for supplying the first intended-setting data or the second intended-setting data to the effect-setting apparatus.

Abstract: An optical system and measurement method for imaging three-dimensional objects with low light scatter comprising at least one source of radiation; a radiation projection means for creating a set of foci through a volume of an object; and a means for imaging the returned light from the set of foci on at least one camera, wherein the imaging of the volume of the object is at a different angle from the projection, allowing for detection of the returned light on separate camera pixels. The measurement method further comprises projecting a longitudinal grid of elongated foci through the volume of an object; imaging returned light from the object at a different angle on at least one camera, so as to avoid overlapping the elongated images; and analyzing the imaged, returned light to yield depth information of the object at a multiplicity of points.

Abstract: An electronic ophthalmoscope combining scanning laser (SLO) and optical coherence (OCT) technologies is further equipped with a pulsed laser source in the femtosecond (fs) range. The goal is primarily to selectively disrupt the photoreceptor mosaic of the retina or Bruch's membrane in a pattern that minimizes loss of visual functioning, and to reduce thereby the metabolic load of the outer retina. Using a beam splitter, one embodiment combines the SLO scanning beams with the therapeutic laser beam and aiming beam. The therapeutic channel uses an independent x/y positioner and micro-deflector. Because the duty cycle is appropriate, a second embodiment can use the SLO scanners to also scan a modulated therapeutic laser beam. A biometric OCT probe, helpful in focusing, can be integrated in both configurations. A method is also disclosed to represent the tilting of the retina at a specified location.

Abstract: Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement.

Abstract: Provided is an imaging apparatus for photographing an image by an intensity of return light obtained from an eye to be inspected irradiated with measuring light, the imaging apparatus including: a fixation target for the eye to be inspected to fixate, an illuminated position setting unit for setting an illuminated position of the fixation target; and an illuminated position controlling unit for controlling the illuminated position setting unit so as to move the illuminated position of the fixation target for a first observation area to an illuminated position of the fixation target for a second observation area, in which the imaging apparatus calculates a movement distance of the illuminated position of the fixation target on the basis of a diopter scale of the eye to be inspected.

Abstract: An adjustment system for an Optical Coherence Tomography (OCT) imaging system includes an OCT light source; a beam splitter, splitting the OCT light beam into an imaging beam to an imaging arm, and a reference beam to a reference arm; a probe, guiding the imaging beam onto a target and receiving a returned imaging beam from the target; the beam splitter generating an interference beam from the returned imaging beam and a returned reference beam from the reference arm; an imaging detector, detecting the interference beam; an imaging processor, generating an OCT image from the detected interference beam; and an adjustment device, removably coupled to the probe, the adjustment device comprising the target attached to a distal region of a target holder at a working distance from a distal end of the imaging probe, wherein an optical length of the reference arm is adjustable to improve a calibration of the OCT image.

Abstract: The ophthalmic apparatus is aligned to an eye to be examined. The apparatus is used to examine the eye. It has two or more infrared or near infrared light sources for emitting light beams and a detector sensitive to infrared or near-infrared light with the capability of detecting the light reflected from the examinee's face. It registers the examination result of the eye examined. The ophthalmic apparatus is aligned to an eye to be examined. The light beam of one infrared or near infrared light source is directed to the face. The light beam of another infrared or near infrared light source is directed to pass the examinee.