58 results about "Fundus camera" patented technology

The invention provides a fundus camera system integrated with adaptive optics and a correction method, and relates to the technical field of ophthalmology imaging. The fundus camera system comprises a beacon light source, an imaging light source and an imaging sensor; the device comprises a wavefront sensor, a wavefront correction device and a control module, and the wavefront correction device comprises a focusing lens group and a deformable reflector; the focusing lens group and the deformable reflector are arranged in the same light path from the beacon light source to human eyes and from the human eyes to the wavefront sensor; moreover, the control module executes a two-step closed-loop control strategy of first focusing and second correction: firstly, based on a first measurement result of the wavefront sensor, the focusing lens group is driven to move so as to compensate low-order aberration; and after the focusing is completed, the deformable reflector is driven to deform based on the subsequent measurement result of the wavefront sensor so as to compensate the high-order aberration in a closed-loop manner. On the basis of inheriting the advantage of rapid focusing in the prior art, the self-adaptive optical technology is further integrated, so that the limitation of high-order aberration on resolution is solved.

The utility model discloses a fundus camera convenient to adjust a chin rest, which comprises a base, the upper surface of the base is fixedly connected with two supporting columns, the top ends of the two supporting columns are fixedly connected with a supporting plate together, the upper surface of the supporting plate is fixedly provided with a fundus camera body, the upper surface of the base is provided with a groove, and the upper surface of the groove is provided with a clamping groove. And a positive and negative rotation motor is fixedly mounted on the inner side wall of the groove. According to the device, firstly, the electric push rod is arranged, the electric push rod can drive the cheek supporting frame body to ascend and descend, so that a worker can conveniently adjust the height of the cheek supporting frame body, and then the positive and negative rotation motor is arranged and can drive the threaded rod to rotate; in this way, the threaded block can drive the connecting block and the sliding plate to slide front and back through rotation of the threaded rod, the electric push rod and the chin rest body can be driven to slide front and back through the sliding plate, and therefore a worker can conveniently adjust the front-back position of the chin rest body.

The application provides an ophthalmic image diagnosis method and system based on multi-modal imaging cooperation, and relates to the technical field of medical image diagnosis. First, the OCT, fundus camera and ultrasonic original image data of an ophthalmic examination object are acquired, and multi-modal dynamic correlation mapping results are obtained through dynamic correlation and trend correlation processing. Cross-modal lesion feature progressive mining and interactive verification are performed to obtain a cross-modal lesion correlation feature set. Multi-modal cooperative diagnosis reasoning and weight feedback optimization are used to generate an ophthalmic disease reasoning result containing disease types, lesion dynamic distribution and reasoning confidence. Finally, an ophthalmic diagnosis report with dynamic labeling and confidence explanation is generated. The application comprehensively utilizes the advantages of various image technologies to improve the accuracy of ophthalmic image diagnosis.

The application discloses a fundus photograph classification system based on deep mutual learning. The application fuses two kinds of anomaly detection algorithms of Ganomaly and FastFlow, constructs a detection model which is adaptive and robust to various eye diseases, effectively solves the problem that artificial intelligence cannot be used for intelligent diagnosis of a disease due to the lack of abnormal samples of the disease in practical application, improves the universality and accuracy of the disease detection model, saves the precious time of doctors, and improves the diagnosis efficiency of patients. In addition, the detection method can be applied to a fundus camera, and the device plays a great role in the initial screening stage of eye diseases. With slight cost, the device solves the problem that early eye diseases of patients are difficult to be found due to objective reasons such as insufficient medical resources and lack of experienced doctors, and truly helps community and primary hospitals to realize early discovery, early diagnosis and early treatment, so that the tragedy of blindness caused by delayed treatment due to late discovery is avoided.

An ophthalmic apparatus comprises a visible light illumination channel, which illuminates a retina of an eye of a patient under examination by visible light. A near-infrared illumination channel illuminates the retina of the eye of the patient under examination by near-infrared light. An imaging channel receives light from the retina of the eye illuminated by the visible light and / or the near-infrared light. A target channel outputs fixation image content to a patient whose eye is under the examination for fixation of a gaze direction of the patient. An alignment arrangement illuminates the anterior part of the eye and reflections therefrom are received by two of a fundus camera sensor and a first and second pupil camera sensors. A data processing unit determines an optimal positional alignment of the eye for imaging a fundus of the eye by a fundus camera sensor based on still image and / or video capture of the anterior part of the eye.

The utility model discloses a lens clamping ring structure and a fundus camera, relates to the technical field of optical lenses and precision assembly, and discloses a lens clamping ring structure, which comprises a first eyepiece lens, a second eyepiece lens and an eyepiece group space ring, the first eyepiece lens, the eyepiece group space ring and the second eyepiece lens are coaxially arranged from front to back in sequence; and the inner side of the eyepiece group space ring is provided with a dip angle for changing the light path of the reflection light spot. By adjusting the inclination of the interior of the lens space ring, the reverse light spots can be directionally reflected to other structure areas, the reverse light spots are prevented from entering an optical system, and the imaging quality of a photo CCD is improved.

The application relates to an ophthalmic multimodal imaging joint calibration device and a calibration method. The device comprises a variable diaphragm, an eye simulation lens, a water room and a calibration plate. The eye simulation lens is placed at the best working distance of the calibrated equipment. The variable diaphragm is placed in front of the front surface of the eye simulation lens, and the light aperture of the variable diaphragm can be adjusted at will. The calibration plate is placed at the back focal plane of the eye simulation lens, and a calibration pattern is drawn on the front surface of the calibration plate. The front surface of the calibration plate, the rear surface of the eye simulation lens and the water room form a closed space, and the inside can be injected with liquid. The application is mainly used for joint imaging calibration of fundus camera equipment and ophthalmic OCT equipment, and solves the problem of poor spatial matching of imaging data when two modal instruments are used for joint imaging.

The present disclosure relates to an optical system of a fundus camera with a light barrier, which comprises an illumination device, a first optical assembly, a second optical assembly, an imaging device and a positioning device; the illumination device comprises an illumination light source; the first optical assembly comprises a first half-transmission half-reflection mirror, a first polarizer, a second half-transmission half-reflection mirror and a retinal objective lens, the first optical assembly directs the light beam from the illumination light source to the fundus of the eye to be examined, and guides the reflected light of the fundus to the second optical assembly; the second optical assembly comprises a second polarizer and a focusing module, the focusing module guides the reflected light to the imaging device; the imaging device receives the light from the second optical assembly to form the fundus image; the positioning device comprises a guiding light source and a light barrier, the light beam of the guiding light source has a preset shape after passing through the light barrier, the imaging device acquires the fundus images of different regions of the eye to be examined based on the guiding light source, and the first optical assembly directs the light beam of the guiding light source to the fundus of the eye to be examined for imaging.

This application discloses a driving device, belonging to the field of fundus camera technology. The coupling and drive motor of the driving device can be integrated into two mounting positions of a bracket, respectively. Therefore, during bracket manufacturing, the preset positional accuracy of the two mounting positions can be easily controlled. After the drive motor is fixed to the bracket, the output shaft is inserted into the second connecting hole of the coupling. Simultaneously, during bracket manufacturing, the preset positional accuracy of the drive screw's mounting position relative to the first and second mounting positions can also be controlled. Furthermore, while leaving an assembly gap between the first end of the drive screw and the first connecting hole of the coupling, the two sets of snap-fit ​​surfaces are engaged. Thus, after the drive motor and coupling are assembled, the first end of the drive screw can be inserted into the first connecting hole, eliminating the need for repeated adjustments to the assembly accuracy between the coupling and the screw, reducing the number of assembly parts and lowering assembly costs.

The techniques described herein relate to fundus imaging systems with automatic image capture. An example method for fundus imaging comprises aligning an image path of a fundus camera to an eye pupil of a subject, iteratively executing an autofocus function to determine a plurality of first diopter values, adjusting a focus of a lens of the fundus camera in accordance with a second diopter value, the second diopter value identified from the plurality of first diopter values or determined from the plurality of first diopter values, and capturing, after adjusting the focus of the lens in accordance with the second diopter value, a fundus image of a retina of the subject.

The invention discloses a use method of a scanning splicing large-view-field fundus phase imaging device. The scanning splicing large-view-field fundus phase imaging device comprises an illumination light path and a zoom light path. The illumination light path comprises a scanning mirror, a spectroscope and a fundus objective lens, the front side of the scanning mirror is a collimation light source, the rear side of the scanning mirror is the spectroscope, the left side of the spectroscope is the fundus objective lens and a patient fundus, and the right side of the spectroscope is a zoom lens group of a zoom light path and a fundus camera. The scanning mirror is rotated and the focal length of the zoom lens group is adjusted in sequence according to the plurality of scanning sequence groups, so that the fundus camera acquires a plurality of groups of positive defocus state, focusing state and negative defocus state images, then a plurality of local fundus phase diagrams are obtained according to the images, and a complete fundus phase distribution diagram is obtained, namely, the fundus phase distribution diagram has the phase information acquisition capability; and observing microscopic important pathological features according to the fundus phase distribution diagram. Therefore, the design has the capability of acquiring phase information, and microscopic important pathological features can be observed.

A non-invasive device for detecting Alzheimer's Disease-associated pathologies, comprising a fundus camera comprising a spectral reflectance imaging unit that includes a broadband light source and a light sensor and a lens assembly to focus light from the broadband light source onto a fundus of an eye, and one or more processors to detect reflected and / or backscattered light from the eye, illuminated by the broadband light source, using the light sensor for determining spectral reflectance information, generate a plurality of spectral reflectance maps comprising counts of reflected and / or backscattered light at a different wavelength or a different range of wavelengths, assign a weight to each of the spectral reflectance maps, and determine one or more regions of interest from the weighted spectral reflectance maps as being a potential Alzheimer's Disease-associated pathology based on a detection of one or more biomarkers indicative of Tauopathy.

The utility model discloses a diopter illumination compensation structure and a fundus camera, and relates to the technical field of medical equipment.The diopter illumination compensation structure comprises a base, a diaphragm assembly and a driving assembly; a movable sliding groove is concavely formed in one end surface of the base; the diaphragm assembly is accommodated in the movable chute; the driving assembly is fixedly arranged on the base; the driving assembly comprises a driving part which is in driving connection with the diaphragm assembly and used for driving the diaphragm assembly to have a movement stroke in the movable sliding groove in the first direction. According to the technical scheme, the diaphragm assembly is contained in the movable sliding groove, meanwhile, the driving part is in driving connection with the diaphragm assembly and used for driving the diaphragm assembly to have the movable stroke in the movable sliding groove in the first direction, in this way, the illumination range can be adjusted to be matched with the imaging position, and then fundus photos with even illumination are obtained; in other words, displacement adjustment of the illumination diaphragm hole can be achieved structurally, so that complete and uniform illumination can be achieved for imaging under different diopters.

The application relates to the technical field of contrast auxiliary devices, and discloses an eye fundus imaging device positioning auxiliary device which comprises a supporting base, a guide rod is fixedly installed at the top of the supporting base, a rotating shaft three is driven to rotate through a rotating knob, the rotating shaft three drives an umbrella-shaped tooth two to mesh with a conical tooth two to rotate, the rotating shaft two, the conical tooth one and the umbrella-shaped tooth one are matched with synchronous transmission, power is transmitted to a rotating shaft one, a convex connecting pin is lapped through electromagnetic coil magnetization iron core adsorption, then the double worm gears synchronously mesh with the worm wheel to drive the transmission screw rod, so that the different patient height adaptation requirements are realized, secondly, the rotating knob is matched with another group of electromagnetic coil magnetization iron core adsorption convex connecting pin lapping, the fixed shaft and the gear are driven to rotate, the gear meshes with the rack to drive the inclined block two to slide, the arc-shaped supporting plate is pushed to adjust the posture, then the eye fundus imaging eye position is matched, so that the cumbersome process of multiple operation piece switching is avoided, and the demand of multiple eye position examination is met.

The invention provides an image processing method considering weak light imaging and a fundus camera, and belongs to the technical field of image processing, and the method specifically comprises the steps: determining the recognition deviation condition under different eye image features based on recognition matching data, carrying out the determination of an enhanced and optimized image feature in the eye image features based on the recognition deviation condition, and carrying out the recognition of the enhanced and optimized image feature. The method comprises the following steps: acquiring image enhancement data under different enhanced and optimized image features in real time, determining matching illumination quantity intervals of the enhanced and optimized image features in combination with identification matching data under the different enhanced and optimized image features, and determining similarity conditions of the matching illumination quantity intervals of the different enhanced and optimized image features. And an image enhancement processing strategy of the eye image features is determined in combination with image enhancement data of the enhanced and optimized image features in different illumination quantity intervals, so that determination of adaptive illumination quantity intervals under different eye image features is realized.

The application provides an eye fundus image acquisition method and device based on an eye fundus camera. A first eye position shooting request is received, and an internal fixation light mark is set to move a preset distance in a nasal direction in a center area of a display interface. A preview image of an eye of a detected person is acquired by a preview image acquisition unit, and a macula, a disc, and an artifact of the preview image are identified. When the artifact does not block a macula position and a disc position, an eye fundus image of the eye of the detected person is acquired by an eye fundus image capture unit. When the artifact blocks the macula position and / or the disc position, the internal fixation light mark is moved between the macula and the disc. This method can change the response position of the internal fixation light by adjusting the internal fixation light mark, so that the artifact in the finally acquired eye fundus image does not block the macula position and the disc position, thereby effectively avoiding information loss and helping doctors diagnose diseases.

The application discloses an optical system for fundus imaging and a fundus camera thereof. The optical system for fundus imaging comprises an illumination assembly, an imaging assembly, an objective lens assembly and a diaphragm structure. The illumination assembly comprises a light source, and an illumination light path is formed between the light source and an examination position to provide an illumination beam to irradiate a pupil. The imaging assembly comprises an imaging element to form a fundus image, and an imaging light path is formed between the imaging element and the examination position. The objective lens assembly is arranged in the illumination light path and the imaging light path, and an objective lens optical axis is formed between the objective lens assembly and the examination position. The illumination light path and the imaging light path are arranged at an angle and are separately arranged on two sides of the objective lens optical axis. The diaphragm structure comprises a first light-transmitting part arranged in front of the imaging element to allow a fundus-reflected light beam to pass through. In the case of allowing the fundus-reflected light beam to pass through the imaging light path, optical ghost images caused by stray light reflected by the objective lens assembly are eliminated.

According to the fundus focusing device and method for the fundus camera, a light source module, an illumination module, a spectroscope, an eye connection module, an imaging module, the camera and a focusing device are arranged, and two laser beams with the included angle smaller than 20 degrees are formed through the light source module; the spectroscope reflects the two laser beams collected and adjusted by the illumination module to form illumination light, the spectroscope transmits the fundus signal light to form transmission light, and a fundus image with two stripes is obtained through the camera; and then the focusing device adjusts the positions of the illumination module and the imaging module to complete fundus imaging focusing, so that the fundus imaging focusing precision is guaranteed, and the technical defects that an existing ultra-wide-angle fundus imaging system is poor in focusing precision, long in focusing process time consumption and insufficient in adjusting precision are overcome.

The invention discloses a mydriasis-free fundus camera and an imaging method thereof, and the mydriasis-free fundus camera comprises an imaging system which is used for shooting an image of a fundus to be detected; the illumination system is used for providing illumination light for the fundus to be detected; the lighting system comprises a first lighting module and a second lighting module which are asymmetrically arranged; the first illumination module and the second illumination module are arranged in a front-back staggered manner along the optical axis direction of the objective lens to form a distributed illumination structure; the light emitting surface of the first illumination module and the fundus to be detected are in a conjugate relationship; and the light emitting surface of the second illumination module and the fundus to be detected are in a non-conjugate relationship. By optimizing the layout of the illumination module and introducing the polaroid system, more uniform illumination is realized, smaller pupil diameter is supported, the equipment size is reduced, cornea reflection is weakened, and eyepiece ghosting is effectively inhibited.

The invention provides a diabetic retinopathy intelligent diagnosis result credibility evaluation device, which comprises a data interface module and a processing module, and is characterized in that the data interface module is used for acquiring fundus image data from a fundus camera, acquiring non-image clinical data from an electronic medical record system, and processing the non-image clinical data; the fundus image data and the non-image clinical data are sent to the processing module, and the processing module is used for conducting credibility evaluation on the diabetic retinopathy intelligent diagnosis result according to the fundus image data and the non-image clinical data. According to the invention, the crossing from a black box to a grey box is realized, and the clinical credibility is obviously enhanced; according to the method, a systematic and multi-dimensional credibility quantification framework is proposed and realized for the first time, and the transparency, safety and reliability of AI in clinical application are greatly enhanced.

The application provides an optical system of a fundus camera, which comprises an ocular lens, an aperture diaphragm, an aberration-correcting lens group, a field lens group, a half-transmission half-reflection mirror and an imaging lens group, light of a light source is irradiated to a pupil through the ocular lens, the light goes out from the pupil and sequentially passes through the ocular lens, the aperture diaphragm, the aberration-correcting lens group and the field lens group to reach the half-transmission half-reflection mirror, 50% of the light transmits through the half-transmission half-reflection mirror to the imaging lens group and is imaged on a CCD, and the other 50% of the light is reflected by the half-transmission half-reflection mirror and is used for connection with a wavefront sensor, and the field lens group comprises a deformable mirror.The application realizes synchronous and efficient collection of high-resolution fundus imaging and high-precision wavefront sensing by optimizing the structure of the aberration-correcting lens group, integrating the field lens group and the deformable mirror and adopting the half-transmission half-reflection mirror light splitting design, and the imaging quality, light energy utilization rate and functional integration degree of the system are improved, and the high-performance requirement of the fundus camera in modern ophthalmic diagnosis and treatment is met.

The invention discloses a visual training method, device and equipment based on image recognition and a medium, and belongs to the field of visual training, and the method comprises the steps: collecting a retina image of a user through a fundus camera, and carrying out the preprocessing of the retina image, and obtaining a macular region image; performing image identification on the yellow spot area image to obtain a spatial position coordinate of the central recess; performing light stimulation on the retina of the user through a preset light source to achieve the purpose of visual training; wherein a preset illumination template is arranged at a position corresponding to the spatial position coordinates, so that the central fovea is not stimulated by illumination; in the illumination stimulation process, eyeball movement of the user is tracked in real time, and the illumination template is synchronously moved based on the eyeball movement, so that the illumination template continuously shields the fovea. Therefore, by implementing the visual training method and device, the accuracy of visual training can be improved, and closed-loop control can be realized.

Apparatus for the non-invasive in-vivo determination of changes in tissue, e.g. the myelination, of the optic nerve (ON) in a biological subject, said apparatus comprising: a laser source for generating an excitation laser beam; an optical system including a fundus camera operatively associated with the laser source for use in obtaining a fundus image for illuminating the optic nerve (ON) of a subject with the excitation laser beam; a detector (13) operatively associated with the optical system and configured to detect a Raman spectrum from the optic nerve (ON) and / or surrounding cerebral spinal fluid; and a processor provided with a computer program for comparing the detected Raman spectrum to at least one reference spectrum. The reference spectrum may correspond to the myelination of the optic nerve in a normal, healthy subject, for determining the changes in the myelination of the optic nerve of the subject based on the detecting and comparing steps from the Raman spectrum.

The present invention provides an ophthalmic device and a method for operating the ophthalmic device that can reliably avoid the examination head (a pair of concave mirrors) coming into close proximity to the patient's nose. [Solution] The ophthalmic device (fundus camera 9) comprises an examination head 20, a pair of concave mirrors (concave mirror unit 50) provided on the examination head 20, a displacement mechanism (X-axis drive unit 14, Z-axis drive unit 15, Y-axis drive unit 16, swing rotation drive unit 17) for displacing the examination head 20, a drive control unit 93 that drives the displacement mechanism to displace the examination head 20 along the tilt axis TA to the examination position of the eye E under examination, a distance detection unit (stereo cameras 81L, 81R, detection control unit 93A) for detecting the face distance Fd while the examination head 20 is displaced along the tilt axis TA, and a retraction control unit 93B that drives the displacement mechanism to rotate the examination head 20 in a direction that increases the face distance Fd when the face distance Fd falls below a threshold.

A portable remote fundus camera comprises an ear-hung frame, an automatic zoom lens for fundus photography, a control box, the control box is provided with a lens mounting through hole, a plurality of first contact points are arranged in the lens mounting through hole, the first contact points are electrically connected with a control circuit board arranged in the control box, the control circuit board is provided with a wireless control module for receiving remote control commands; one end of the automatic zoom lens is provided with a plurality of second contact points, the automatic zoom lens is mounted in the lens mounting through hole, so that each second contact point is in contact with the corresponding first contact point; the frame of the ear-hung frame is a rectangular frame, the control box is movably arranged in the rectangular frame, so that the automatic zoom lens can be aligned with the left eye or the right eye, a supporting bracket is arranged at the back of the rectangular frame, the edge of the supporting bracket in contact with the forehead of the patient is a concave arc edge, and a first positioning groove is arranged at the position of the supporting bracket in contact with the bridge of the nose of the patient.

According to the fundus camera and the pupil positioning method thereof, a positioning light path, a control module and a fundus detection light path are arranged, and the positioning light path emits a pair of intersecting light beams to a detected eye so as to form two light spots around the pupil of the detected eye; the positioning light path also obtains a pupil image showing the position information of the pupil and the two light spots around the pupil. Target detection is carried out on the pupil image through the arranged control module to obtain the center distance of the two light spots on the pupil image, the support is moved according to the center distance, and the effect of adjusting the distance between the eye objective lens and the eye is achieved. The distance between the eye objective lens, the support and the face of the photographed person can be kept all the time in the process, and collision can be avoided. And under the combination with the fundus detection light path, a camera for pupil positioning does not need to be arranged again on the basis of a fundus camera, and the camera does not need to be switched when the left eye and the right eye are switched.

The present disclosure relates to an apparatus for eye detection. The apparatus comprises: a fundus camera comprising at least a front lens barrel assembly and a rear lens barrel assembly, and configured to perform a photographing operation on a fundus of an eye, wherein the front lens barrel assembly comprises at least an objective lens; an optometry instrument sharing the objective lens with the fundus camera, and configured to perform an optometry operation on an eye; and a mirror assembly arranged between the front lens barrel assembly and the rear lens barrel assembly, and configured to switch an internal light path of the apparatus so that the apparatus is correspondingly in a fundus camera mode for performing the photographing operation or in an optometry instrument mode for performing the optometry operation. With the solution of the present disclosure, the fundus camera and the optometry instrument can be implemented in one device, and the detection efficiency is improved.

This invention relates to the field of binocular lens calibration technology and discloses an automatic height difference calibration system for a portable fundus camera's binocular lens. The system includes an adjustment base, a binocular lens assembly, and a standard circular feature calibration target. A bracket is fixedly connected to the bottom inner side of the adjustment base, and a moving platform is mounted on the top of the bracket. An image acquisition module is fixedly connected to one side of the binocular lens assembly, and this module is used to acquire images of the standard circular feature calibration target. A calculation compensation module is fixedly connected to the top left side of the adjustment base. This invention utilizes a stacked three-axis moving platform, employing motors one, two, and three to drive the binocular lens assembly to precisely displace along the Y, X, and Z axes respectively. Combined with the collaborative work of the image acquisition module and the calculation compensation module, this achieves automated acquisition and processing of calibration data.

The utility model provides a fundus camera based on ophthalmology, comprising a base plate, one end of the base plate is provided with a chute, the chute is internally provided with a threaded rod, the threaded rod is in threaded connection with a telescopic rack, the top surface of the telescopic rack is fixedly connected with a displacement frame, the displacement frame is internally provided with a displacement rod, and the top of the displacement rod is provided with a shooting device. The top surface of the rotating plate is fixedly connected with a threaded column, the threaded column is in threaded connection with a threaded sleeve, the threaded sleeve is fixedly sleeved with a supporting frame, the top surface of the supporting frame is fixedly connected with an arc-shaped ring, and the center of the inner wall of the arc-shaped ring is fixedly connected with a supporting block; a threaded rod adjusts the position of a telescopic frame in a sliding groove so as to adapt to eye distances of different patients, the position of shooting equipment is finely adjusted through a displacement rod and a first elastic piece in a displacement frame, the head positions and angles of different patients can be adapted by adjusting the angles of a supporting frame and an arc-shaped ring, and the comfort level of the patients is improved.

The present invention provides an ophthalmic device and a method for operating the ophthalmic device that enable the examination of a subject's eye using an examination head (a pair of concave mirrors) without bringing the examination head close to the subject's nose. [Solution] The ophthalmic device (fundus camera 9) comprises an examination head 20, a pair of concave mirrors (concave mirror unit 50) that form an optical path for illumination light and return light between the examination head 20 and the eye E under examination, a displacement mechanism (each drive unit 14-17) that displaces the examination head 20, a plurality of cameras (stereo cameras 81L, 81R) provided on the examination head 20, a nose imaging control unit 91A that photographs the nose N of the subject H from multiple different directions using at least two or more cameras, an inclination angle determination unit 91C that determines the inclination angle θ of the inclination axis TA with respect to the reference axis VA, and a drive control unit 93 that drives the displacement mechanism to displace the examination head 20 along the inclination axis TA to the examination position of the eye E under examination.