JP7345717B2 - ophthalmology equipment - Google Patents

Description

The present disclosure relates to an ophthalmological apparatus that examines an eye to be examined.

Conventional ophthalmological equipment includes, for example, a fundus camera, an optical coherence tomography (OCT), a scanning laser ophthalmoscope (SLO), an eye refractive power measurement device, a corneal topography measurement device, and a corneal endothelial cell measurement device. Photographing devices, goniometric imaging devices, intraocular pressure measuring devices, or combination devices thereof are known. These devices, for example, project light emitted from a light source onto the subject's eye through an examination window formed in the housing, and perform an examination (photographing or measurement) (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2012-213489

Incidentally, the ophthalmological apparatus as described above is sometimes used in a dark room or a semi-dark room. In this case, there is a possibility that the examiner may make a mistake in the operation because he or she does not know the position of the operation section. In addition, it was sometimes difficult to grasp the status of the device or the subject.

In view of the problems of the prior art, a technical problem of the present disclosure is to provide an ophthalmological apparatus that can prevent erroneous operation of the apparatus or easily grasp the condition of the apparatus or a subject.

In order to solve the above problems, the present disclosure is characterized by having the following configuration.

(1) An ophthalmological apparatus for testing an eye to be examined, comprising an optometry means for testing the eye to be examined;A joystick for operating the eye examination means, and a lighting means for illuminating the joystick, the lighting means having a plurality of light sources arranged in a ring shape surrounding the joystick.It is characterized by

According to the present disclosure, it is possible to prevent erroneous operation of the device, or to easily understand the state of the device or the eye to be examined.

FIG. 2 is a schematic diagram showing the appearance of the device. FIG. 3 is a diagram showing the internal configuration of an optometric department. FIG. 3 is a view of the operation unit viewed from above. FIG. 3 is a partial cross-sectional view of the operating section viewed from the side. It is a schematic diagram showing an example of modification of the device.

<Embodiment>
Embodiments according to the present disclosure will be described. The ophthalmologic apparatus (for example, the ophthalmologic apparatus 10) of this embodiment examines (photographs or measures) an eye to be examined. The ophthalmological apparatus includes, for example, an optometry section (for example, the optometry section 100), an operation section (for example, the operation section 96), an illumination section (for example, the illumination section 50), and a control section (for example, the control section 90). Equipped with For example, the optometry department examines the eye to be examined. The operation unit is provided, for example, to operate the optometry department. For example, the operation unit may accept an operation from the examiner and output an operation signal or the like. The lighting section illuminates the operation section. The control section controls the lighting section. The control unit changes the control method (illumination method) of the illumination unit depending on at least one of the device state, the examiner state, and the subject state. The examiner can easily grasp the position of the operating section and the state of the device or the subject by checking the change in the illumination method of the operating section by the illumination section.

Note that the control unit may change the light emission timing of the illumination unit, or change the color of the illumination light of the illumination unit, depending on at least one of the device status, the examiner status, and the subject status. Alternatively, the amount of light from the illumination unit may be changed.

Note that the device state may be at least one of a power state, a mode state, an alignment state, an inspection state (such as a photographing state or a measurement state), an error state, and a communication state. The examiner state may be, for example, a posture state. Further, the subject state may be, for example, at least one of a face supporting state, a contact state, and a blinking state.

Note that the illumination unit may include a plurality of light sources provided at mutually different positions. In this case, the control unit may cause the plurality of light sources to emit light independently. The control unit may change the illumination position by causing the plurality of light sources to emit light independently. The illumination position is, for example, a position illuminated by the illumination unit. For example, the control unit may change the illumination position by turning on some of the plurality of light sources and turning off the others.

Note that the control unit may change the illumination position of the illumination unit depending on at least one of the device state, the examiner state, and the subject state, for example. For example, the control unit may assist (guide) the examiner's alignment operation by changing the illumination position. For example, the control unit may turn on the light source provided in the direction toward the best alignment position and turn off the other light sources. In this case, the examiner can align the apparatus by operating the operating section in the direction of the illumination position of the illumination section.

For example, when performing alignment in the front-rear direction among multiple light sources provided in the front, rear, left, and right directions of the operation unit, the control unit may cause only the light sources provided in the front-rear direction to emit light and performing horizontal alignment. Alternatively, only the light sources provided in the left and right direction may emit light. In addition, when performing vertical alignment, the control unit can turn on and off the multiple light sources provided in the illumination unit in sequence to make it appear as if the illumination position is rotating around the operation unit. good.

Note that when changing the illumination position of the illumination unit, the illumination direction in which the light sources emit illumination light may be changed without being limited to causing a plurality of light sources to emit light independently as described above.

Note that the illumination section may be provided around the operation section. For example, the illumination section may be ring-shaped (circular). For example, the illumination unit may be provided on a base (eg, base 20) that supports the optometry unit. The illumination unit may illuminate the operation unit by emitting illumination light from the bottom to the top.

Note that the operation unit may be provided on a base, for example. The operation unit may output an operation signal for moving the optometry unit, for example. For example, the operation unit may be a joystick. In this case, the lighting section may be provided around the joystick.

<Example>
A first embodiment according to the present disclosure will be described based on the drawings. The ophthalmological apparatus 10 of the embodiment examines (for example, photographs or measures) an eye to be examined. The ophthalmological device 10 includes, for example, an eye refractive power measurement device, a keratometry device, a corneal endothelial cell imaging device, an intraocular pressure measurement device, an axial length measurement device, a fundus camera, an optical coherence tomography (OCT), and a scanning laser ophthalmoscope (SLO). etc.

<Appearance of the device>
The appearance of the ophthalmologic apparatus will be described based on FIG. 1. As shown in FIG. 1, the ophthalmologic apparatus 10 of this embodiment includes a base 20, an XYZ drive section 30, a face support section 40, an operation section 96, an optometry section 100, an illumination section 50, etc. .

The base 20 supports the entire device. For example, the XYZ drive section 30 moves the optometry section 100 in the up, down, left, right, front and rear directions (three-dimensional direction) with respect to the base 20.

The face support part 40 is, for example, a chin rest. The face support section 40 includes, for example, a forehead rest 41, a chin rest 42, a base 46, and the like. The forehead of the subject is brought into contact with the forehead rest 41. The chin rest 42 supports the subject's chin. The chin rest 42 may be moved in the vertical direction by driving the chin rest driving section 43. The base 46 supports the forehead rest 41 and the chin rest 42. The face support section 40 may include a chin rest sensor 44 that detects whether or not the chin rests on the chin rest 42. For example, the chin rest sensor 44 detects that the chin rest 42 is pushed downward by the subject's chin. The chinrest sensor 44 may be, for example, a photo sensor, a magnetic sensor, a pressure sensor, a contact sensor, or the like. Note that the face support section 40 may be able to rotate with respect to the base 20 and the optometry section 100 by a rotation mechanism (not shown). In this way, the orientation of the subject's face may be changed.

Various operating instructions from the examiner are input into the operating section 96 . The operation unit 96 outputs a signal according to the input operation instruction. For the operation unit 96, at least one user interface such as a joystick, a mouse, a keyboard, a trackball, a button, a touch panel, etc. may be used. In this embodiment, a joystick is used as the operation unit 96. The operation unit 96 is provided with, for example, a photographing button 96a, a vertical movement dial 96b, and the like. Note that the ophthalmologic apparatus 10 may include a display section. The display section is provided separately from the operation section 96.

<Lighting section>
The illumination section 50 illuminates the operation section 96. As shown in FIGS. 3 and 4, the illumination unit 50 includes, for example, a light source 51, a diffusion plate 52, and a base 53. The light source 51 is arranged on a base 53 fixed to the base 20. The light source 51 emits light of multiple colors. For example, light source 51 is a multicolor LED. The diffusion plate 52 is provided above the light source 51, and diffuses the illumination light from the light source 51 while transmitting it to the outside of the base 20. The diffusion plate 52 is, for example, ring-shaped and surrounds the operating section 96. Illumination light emitted from the light source 51 is diffused by the diffuser plate 52 and illuminates the operating section 96 from below. This makes it easy to locate the operating section 96 even in a dark room. As shown in FIG. 3, the light source 51 includes a plurality of light sources 51a to 51h, which are arranged in eight diagonal directions of the front, back, left, and right of the operation unit. However, the arrangement direction of the light source 51 is not limited to this. Note that the light source 51 is not limited to multicolor LEDs, and may include a plurality of monochrome LEDs with different colors to emit light in a plurality of colors. Note that the illumination unit 50 may include a transparent plate instead of the diffusion plate 52.

<Optometry Department 100>
The optometric department 100 performs an examination (photography or measurement) of the eye to be examined. The optometry unit 100 may include, for example, an optical system that measures the eye refractive power, corneal curvature, or intraocular pressure of the eye to be examined. Further, the optometry department 100 may include an optical system or the like for photographing the anterior segment of the eye to be examined, the fundus, or the like. In this embodiment, as an example, a case will be described in which an optical system is provided to take a tomographic image of an eye to be examined.

FIG. 2 is a schematic diagram showing the internal configuration of the optometry section 100. As shown in FIG. 2, the optometric department 100 of this embodiment includes an OCT optical system 110, an observation optical system 140, a fixation target projection section 150, a control section 90, and the like.

For example, the OCT optical system 110 irradiates the eye E with measurement light and obtains an OCT signal using the reflected light and the measurement light. For example, the OCT optical system 110 captures a tomographic image of the eye E by acquiring an OCT signal.

The OCT optical system 110 is a so-called optical coherence tomography (OCT) optical system. The OCT optical system 110 uses a coupler (light splitter) 112 to split light emitted from a measurement light source 111 into measurement light (sample light) and reference light. Then, the OCT optical system 110 guides the measurement light to the fundus Ef of the eye E through the measurement optical system 120. The measurement optical system 120 includes, for example, a scanning section (for example, an optical scanner) 121. For example, the scanning unit 121 changes the scanning position of the measurement light on the eye to be examined in order to change the imaging position on the eye to be examined. Further, the OCT optical system 110 guides the reference light to the reference optical system 130. Thereafter, the detector 113 receives interference light obtained by combining the measurement light reflected by the eye E to be examined and the reference light.

The detector 113 detects the state of interference between the measurement light and the reference light. In the case of Fourier domain OCT, the spectral intensity of the interference light is detected by the detector 113, and a depth profile (A-scan signal) in a predetermined range is obtained by Fourier transformation of the spectral intensity data. Examples include Spectral-domain OCT (SD-OCT) and Swept-source OCT (SS-OCT). Alternatively, it may be Time-domain OCT (TD-OCT).

The light emitted from the light source 111 is split by a coupler 112 into a measurement light beam and a reference light beam. After passing through the optical fiber, the measurement light beam is emitted into the air. The light beam is focused on the fundus Ef via the optical member of the measurement optical system 120. Then, the light reflected by the fundus Ef is returned to the optical fiber through the same optical path.

The scanning unit 121 scans the fundus with measurement light in the XY direction (transverse direction). The scanning unit 121 is arranged at a position substantially conjugate with the pupil. For example, the scanning unit 121 is a galvano scanner having two galvano mirrors, and the reflection angle thereof is arbitrarily adjusted by the drive mechanism 122. The scanning unit 121 may have any configuration as long as it deflects light. For example, in addition to a reflecting mirror (galvano mirror, polygon mirror, resonant scanner), an acousto-optic element (AOM) that changes the direction of propagation (deflection) of light, etc. are used.

The reference optical system 130 generates a reference light that is combined with reflected light obtained by reflection of the measurement light on the fundus Ef. The reference optical system 130 may be of a Michelson type or a Mach-Zehnder type. The reference optical system 130 is formed by, for example, a reflective optical system (for example, a reference mirror), and the light from the coupler 112 is reflected by the reflective optical system to be returned to the coupler 112 and guided to the detector 113. As another example, the reference optical system 130 is formed by a transmission optical system (eg, an optical fiber) and directs the light from the coupler 112 to the detector 113 by transmitting the light without returning it.

The reference optical system 130 has a configuration that changes the optical path length difference between the measurement light and the reference light by moving an optical member in the reference light path. For example, the reference mirror is moved in the optical axis direction. A configuration for changing the optical path length difference may be placed in the measurement optical path of the measurement optical system 120.

The observation optical system 140 captures an observation image of the eye to be examined. The observation image may be, for example, a frontal image of the fundus Ef or an anterior segment image. The observation optical system 140 of this embodiment is a so-called scanning laser ophthalmoscope (SLO). For example, the observation optical system 140 includes, for example, an SLO light source 141, a focusing lens 143, a scanning section 144, a relay lens 145, and the like. The SLO light source 141 is a light source that emits highly coherent light, and for example, a laser diode light source with λ=780 nm is used. The focusing lens 143 is movable in the optical axis direction according to the refractive error of the eye to be examined. The scanning unit 144 is composed of a combination of a galvanometer mirror and a polygon mirror that can scan the measurement light in the X and Y directions on the fundus at high speed by driving the drive unit 144a. The relay lens 145 relays the measurement light reflected by the scanning section 144 to the objective lens 101.

A beam splitter 142 is arranged between the SLO light source 141 and the focusing lens 143. In the reflection direction of the beam splitter 142, a condensing lens 146, a confocal aperture 147 placed at a position conjugate to the fundus of the eye, and a light receiving element 148 are provided.

The laser light (measurement light) emitted from the SLO light source 141 passes through the beam splitter 142 and then reaches the scanning section 144 via the focusing lens 143, where the direction of reflection is changed by driving a galvanometer mirror, a polygon mirror, etc. . The laser beam reflected by the scanning unit 144 is then focused on the fundus of the eye via the relay lens 145 and the objective lens 101.

The laser beam reflected from the fundus passes through the objective lens 101, the relay lens 145, the scanning section 144, and the focusing lens 143, and is reflected at the beam splitter 142. Thereafter, the light is focused by a condenser lens 146 and then detected by a light receiving element 148 through a confocal aperture 147 . The light receiving signal detected by the light receiving element 148 is input to a control section 90, which will be described later. The control unit 90 acquires a frontal image of the fundus of the subject's eye based on the light reception signal obtained by the light reception element 148. The acquired frontal image is stored in the storage unit 94. Note that the SLO image is acquired by scanning the laser beam in the vertical direction (sub-scanning) using a galvano mirror provided in the scanning unit 144 and scanning the laser beam in the horizontal direction (main scanning) using the polygon mirror.

Note that the configuration of the observation optical system 140 may be a so-called fundus camera type configuration. Further, the OCT optical system 110 may also be used as the observation optical system 140. That is, the frontal image may be acquired using data forming a two-dimensionally obtained tomographic image (for example, an integrated image in the depth direction of a three-dimensional tomographic image, integrated value of spectral data, etc.).

The fixation target projection unit 150 has an optical system for guiding the line of sight direction of the eye E. The fixation target projection unit 150 presents a fixation target to the eye E, for example. The fixation target projection unit 150 has, for example, a visible light source that emits visible light. The fixation target projection unit 150 may be of an internal fixation lamp type or an external fixation lamp type.

The face photographing unit 160 photographs, for example, the face of the subject's eye. The face photographing unit 160 photographs, for example, a face including at least one of the left and right eyes of the subject.

The control unit 90 is realized by a general CPU (Central Processing Unit) 91, ROM 92, RAM 93, etc. The ROM 92 of the control unit 90 stores an OCT signal processing program for processing OCT signals, various programs for controlling the operation of the ophthalmologic apparatus 10, initial values, and the like. The RAM 93 temporarily stores various information. Note that the control unit 90 may be configured by a plurality of control units 90 (that is, a plurality of processors).

As shown in FIG. 2, the control unit 90 is electrically connected to, for example, a storage unit (eg, nonvolatile memory) 94, an operation unit 96, and the like. The storage unit 94 is a non-transitory storage medium that can retain stored contents even if the power supply is cut off. For example, a hard disk drive, flash ROM, removable USB memory, etc. can be used as the storage unit 94.

<Lighting control>
The control section 90 controls the illumination section 50. For example, the control unit 90 changes the light emission timing, the color of the illumination light, or the amount of light. When changing the light emission timing, for example, the control unit 90 turns on, blinks, or extinguishes the light source 51 of the illumination unit 50. When the illumination unit 50 is provided with a plurality of light sources 51a to 51h, the control unit 90 may shift the timing of lighting, blinking, or extinguishing of each light source 51. Further, when changing the color of the illumination light, for example, the control unit 90 changes the color of the illumination light to various colors such as red, orange, yellow, green, blue, indigo, and violet. Further, when changing the amount of illumination light, for example, the control unit 90 increases or decreases the amount of illumination light.

The control unit 90 changes the method of controlling the illumination unit 50 (for example, the method of illuminating the operation unit 96 by the illumination unit 50) according to at least one of the device state, the examiner state, and the examinee state. Thereby, the control unit 90 notifies the examiner of the device status, examiner status, or examinee status. The device state includes, for example, a power state, a mode state, an alignment state, an imaging state (inspection state), an error state, a communication state, and the like. The examiner state is, for example, a posture state. The subject state is, for example, a face support state, a contact state, or a blinking state.

The device status will be explained. The power state, which is one of the device states, indicates, for example, power ON/OFF or sleep. For example, the control unit 90 turns on the light source 51 of the illumination unit 50 when the device 10 is powered on. Further, the control unit 90 turns off the light source 51 of the illumination unit 50 when the power of the device 10 is turned off. Further, the control unit 90 causes the light source 51 of the illumination unit 50 to blink when the device 10 is in the sleep state. This allows the examiner to easily understand whether the device 10 is powered on, turned off, or in a sleep state. Of course, the control unit 90 may change the color of the illumination light from the illumination unit 50, change the amount of illumination light, or combine these control methods depending on the power state. Note that the power state may be a battery state. For example, the control unit 90 may change the method of controlling the lighting unit 50 depending on the remaining battery level. With this, it is possible to easily grasp the remaining battery level of a battery-powered ophthalmological apparatus (such as a hand-held ophthalmological apparatus).

The mode status includes, for example, an alignment mode such as auto alignment or manual alignment, or a photography mode (examination mode) such as anterior segment photography, fundus photography, color fundus photography, fluorescent fundus photography, stereo photography, or panoramic photography. Indicates the status of For example, while executing each mode, the control unit 90 may turn on the illumination unit 50 in a color of illumination light set for each mode. This allows the examiner to easily understand in which mode the examination is being performed.

The alignment state indicates, for example, a state in which alignment has started, alignment is in progress, or alignment has been completed. For example, the control unit 90 may change the light emission timing of the illumination unit 50, the color of the illumination light, or the amount of illumination light when the alignment of the optometry unit 100 starts, during alignment, and when the alignment is completed. This allows the examiner to easily understand the stages of alignment.

Note that the control unit 90 may assist the examiner's manual alignment by controlling the illumination unit 50 during alignment of the optometry unit 100. For example, the control unit 90 detects the position of the eye to be examined from a face image or anterior eye front image photographed by the face photographing unit 160 or the anterior eye photographing unit (not shown), and determines whether the position of the optometrist 100 is relative to the eye to be examined. If there is a deviation in the XZ direction (front, rear, left, and right directions), among the plurality of light sources 51a to 51h, the light source provided in the direction toward the best alignment position is turned on, and the other light sources are turned off. Thereby, the examiner can easily align the position of the optometry section 100 by operating (tilting) the operation section 96 in the direction in which the light source 51 is lit. Further, when the position of the optometry section 100 is shifted in the Y direction (vertical direction) with respect to the eye to be examined, the control section 90 sequentially turns on/off the light sources 51a to 51h of the illumination section 50 to provide illumination light. You can also make it appear as if it is rotating. Thereby, the examiner can easily adjust the position of the optometry section 100 by rotating the dial 96b in the direction in which the illumination light appears rotated.

Further, the control unit 90 detects the position of the eye to be examined based on, for example, a bright spot appearing in a frontal image of the anterior segment photographed by an anterior eye photographing unit (not shown), and the ophthalmoscopy unit 100 detects the position of the eye to be examined relative to the eye to be examined. If it is shifted in the left-right direction, the light sources 51c and 51g provided in the left-right direction of the illumination unit 50 are turned on, and the other light sources are turned off. Further, when the optometry section 100 is shifted in the front-back direction with respect to the eye to be examined, the light sources 51a and 51e provided in the front-back direction of the illumination section 50 are turned on, and the other light sources are turned off. Thereby, the examiner can easily understand in which direction he or she should operate (tilt) the operating section 96 to move the optometry section 100. In addition, if the optometry section 100 is vertically displaced from the eye to be examined, the light sources 51a to 51h of the illumination section 50 are turned on and off in sequence, so that the illumination light alternately rotates clockwise and counterclockwise. You can make it look like you are. This allows the examiner to easily understand whether to move the optometry section 100 in the vertical direction by rotating the dial 96b.

The imaging state (inspection state) indicates, for example, the start of imaging (inspection start), the imaging in progress (inspection in progress), the completion of imaging (inspection completion), and the like. For example, the control unit 90 may change the light emission timing of the illumination unit 50, the color of the illumination light, or the light amount of the illumination light when the optometry unit 100 starts photographing the subject's eye, during photography, and when photography is completed. This allows the examiner to easily understand the stage of imaging. Note that the shooting state may include processing states such as image processing and storage processing, for example. For example, the control unit 90 may change the method of controlling the illumination unit 50 depending on whether internal processing such as image processing or storage processing has been performed. Thereby, the examiner can turn off the power of the apparatus or perform the next operation after confirming that the internal processing has been completed using the illumination light from the illumination unit 50.

Error conditions include, for example, an error caused by an internal malfunction of the device such as a defective part, an auto-alignment error when the position of the eye to be examined cannot be detected, or an error when imaging fails because a good image cannot be obtained. shows. For example, when these errors occur, the control unit 90 may change the light emission timing of the illumination unit 50, the color of the illumination light, or the amount of illumination light. This allows the examiner to easily understand that an error has occurred during the examination.

The communication state is, for example, a state indicating whether the ophthalmologic apparatus 10 is connected to a communication network by wire or wirelessly. For example, the control unit 90 may change the method of controlling the lighting unit 50 depending on the communication state. Thereby, the examiner can easily confirm whether or not the ophthalmological apparatus 10 is capable of communication using the illumination light of the illumination unit 50. Note that the communication state may include a state indicating whether or not the ophthalmologic apparatus 10 is communicating.

Next, the explanation will be given to the examiner. The posture state, which is one of the examiner states, is, for example, whether the examiner is standing or sitting, or which side of the ophthalmological apparatus 10 the examiner is on (the examinee's side, the side facing the examinee, the right side). , left side, etc.). For example, the control unit 90 detects whether the examiner is standing or sitting, or which side of the ophthalmological apparatus 10 the examiner is on, using an examiner photographing camera (not shown) provided on the examiner side of the apparatus main body, The method of controlling the illumination unit 50 may be changed depending on the posture of the examiner.

Further, the examiner status may include examiner information indicating who the examiner is. For example, the control unit 90 may change the control method of the illumination unit 50 based on the examiner ID input by the examiner (for example, the login ID of an electronic medical record system or the login ID of a personal computer). For example, the control unit 90 may illuminate the operation unit 96 with illumination light of a different color for each examiner. Thereby, the examiner can confirm by the illumination light from the illumination unit 50 that his or her ID has been correctly input or that his or her settings have been applied to the apparatus.

Next, the condition of the subject will be explained. The face support state, which is one of the subject states, indicates, for example, whether the face of the subject is supported by the face support section 40 or not. For example, when the control unit 90 detects that the subject's face has come off the face support unit 40 during alignment using the chinrest sensor 44 provided in the face support unit 40, the control unit 90 controls the timing of the light emission of the illumination unit 50. , the color of the illumination light, or the amount of illumination light may be changed. Thereby, the examiner can easily understand that the subject's face has come off the face support part 40. Further, the face support state may include the orientation of the subject's face supported by the face support unit 40. For example, the orientation of the subject's face may be detected from the face image photographed by the face photographing section 160, and the method of controlling the illumination section 50 may be changed depending on which direction, up, down, left or right, the face is facing.

The contact state indicates whether or not the optometric department 100 and the subject are in contact. For example, when a contact sensor (not shown) provided in the optometry section 100 detects that the test subject is in contact with the optometry section 100, the control section 90 controls the light emission timing of the illumination section 50, the illumination light The color of the illumination light or the amount of illumination light may be changed. This allows the examiner to easily understand that the eye to be examined and the subject are in contact.

The blinking state indicates whether or not the subject is blinking. For example, when the control unit 90 detects that the subject's eye blinks or blinks frequently based on a face image or an anterior segment front image, the control unit 90 controls the light emission timing of the illumination unit 50, the color of the illumination light, Alternatively, the amount of illumination light may be changed. This allows the examiner to easily understand that the subject is blinking or blinking a lot.

Note that the subject status may include subject information indicating who the subject is. For example, the control unit 90 may change the control method of the illumination unit 50 based on the subject ID input by the examiner. For example, the control unit 90 may change the color of the illumination light for a subject who is being examined for the first time and a subject who has been examined in the past.

<Operation example>
An example of the operation of the ophthalmologic apparatus 10 having the above configuration will be described together with the operating procedure. First, the examiner turns on the power of the device 10. When the power is turned on, the control section 90 turns on the light source 51 of the illumination section 50 and illuminates the operation section 96. Since the operating section 96 is illuminated, the examiner can confirm that the device 10 is powered on and can grasp the position of the operating section 96. Furthermore, the examiner can confirm the currently set alignment mode by the color of the illumination light.

The examiner instructs the subject to place the chin on the chin rest 42 and place the forehead on the forehead rest 41. When the subject's chin is placed on the chin rest 42, a signal is sent from the chin rest sensor 44 to the control unit 90. Upon receiving the signal from the chin rest sensor 44, the control unit 90 starts auto-alignment of the optometry unit 100. For example, the control unit 90 causes the light source 51 of the illumination unit 50 to blink twice at the start of alignment, and lights up the light source 51 during alignment. If it is detected that the subject's chin has come off the chin rest 42 during alignment, the control unit 90 changes the color of the illumination light. After confirming the change in the color of the illumination light, the examiner instructs the subject to place his or her chin on the chin rest 42 again. When the alignment is completed, the control unit 90 causes the light source 51 to blink.

Note that if the position of the eye to be examined is not detected and an alignment error occurs, the control unit 90 changes the color of the illumination light. The examiner confirms that an alignment error has occurred due to a change in the color of the illumination light. When the alignment mode is switched to manual by the examiner's operation, the control unit 90 changes the color of the illumination light to a color corresponding to the manual alignment mode.

When the control unit 90 detects the eye to be examined by an anterior segment imaging unit (not shown) or the like, the control unit 90 turns on the light source corresponding to the direction of the eye to be examined among the light sources 51 (51a to 51h). The examiner can easily align the eye to be examined by operating the operation unit 96 in the direction in which the light source 51 lights up.

When the examiner presses the photographing button 96a to start photographing, the control unit 90 causes the light source 51 to blink in a color corresponding to the photographing mode, and when the photographing is completed, stops the blinking.

As described above, in the ophthalmologic apparatus 10 of the present embodiment, by illuminating the operation section 96 with the illumination section 50, the examiner can easily grasp the position of the operation section 96 in a dark room or the like. As a result, it is possible to easily grasp the device status or the subject status based on the way the illumination light is emitted, while reducing erroneous operations by the examiner.

Note that the above-mentioned operation is an example, and the method of controlling the illumination unit corresponding to each device state, each examiner state, or each subject state is not limited to the above, and may be arbitrarily changed.

<Transformation example>
The control unit 90 increases the light intensity of the light sources 51b to 51d on the right side of the illumination unit 50 when photographing the right eye, and increases the light intensity of the light sources 51f to 51h on the left side of the illumination unit 50 when photographing the left eye. It's okay. Alternatively, only the light sources 51b to 51d on the right side of the illumination section 50 may be turned on when photographing the right eye, and only the light sources 51f to 51h on the left side of the illumination section 50 are turned on when photographing the left eye. This allows the examiner to easily understand which eye, the left or the right, is being imaged.

Note that the device 10 may include an illuminance sensor or the like. In this case, the control unit 90 may automatically adjust the light amount of the lighting unit 50 according to the brightness of the room detected by the illuminance sensor. For example, the control unit 90 may increase the amount of illumination light when the room is bright, and may decrease the amount of illumination light when the room is dark. This makes it easy for the examiner to confirm the illumination light in any bright room.

Note that the device status may include the attachment status of the optical adapter. As shown in FIG. 5, the optical adapter 200 is an optical element unit that is attached to the examination window 100a of the optometry department 100 when performing unusual imaging such as wide-angle imaging or anterior segment imaging. . The control unit 90 may change the method of controlling the illumination unit 50 depending on the attachment state indicating whether or not the optical adapter 200 is attached or the type of the optical adapter 200 attached. In this case, the control unit 90 may detect the optical adapter 200 using an adapter detection unit 210 provided in the optometry unit 100 or the like.

Further, the device state may include the arrangement state of the display unit. As shown in FIG. 5, when the display section 95 is provided that can be rotated by the rotation mechanism 95a, depending on the panning (horizontal rotation) or tilting (vertical rotation or inversion) of the display section 95, The method of controlling the illumination unit 50 may be changed. In this case, the control section 90 may detect the arrangement state of the display section 95 using a sensor 95b (such as a position sensor, an angular velocity sensor, or an acceleration sensor) provided on the display section 95 or the like.

Further, the device state may include a diopter correction state. For example, the control unit 90 detects the diopter correction state based on position information or insertion/removal information of a diopter correction lens (not shown) provided inside the optometry unit 100, and controls the lighting unit 50 according to the diopter correction state. The control method may be changed.

In addition, in the above embodiment, the joystick was mainly described as the operation section 96, but the present invention is not limited to this. For example, the operation unit 96 may be a button, a trackball, or other user interface. Further, the operation section 96 is not limited to one provided in the main body of the ophthalmological apparatus 10, but may be a hand-held controller connected to the main body of the apparatus by wire or wirelessly. In this case, the illumination unit 50 may be provided in a handheld controller.

Note that in the above embodiment, the illumination section 50 was provided on the base 20, but it may be provided on the operation section 96.

Note that the device state, examiner state, or examinee state and the corresponding illumination method of the illumination unit 50 may be set arbitrarily by the examiner's operation. This makes it easy for the examiner to understand which illumination method corresponds to which device state, examiner state, or examinee state.

10 Ophthalmological apparatus 20 Base 30 XYZ drive section 40 Face support section 80 Face photographing section 90 Control section 100 Optometry section

Claims (3)

An ophthalmological device for examining an eye to be examined,
an optometry means for testing the eye to be examined;
a joystick for operating the optometry means;
illumination means for illuminating the joystick;
The ophthalmologic apparatus is characterized in that the illumination means includes a light source arranged in a ring shape surrounding the joystick . The ophthalmologic apparatus according to claim 1 , wherein the illumination means includes a ring-shaped diffuser plate provided above the light source . further comprising a control means for controlling the illumination means,
3. The ophthalmological apparatus according to claim 1, wherein the control means changes the method of controlling the illumination means depending on at least one of an apparatus state, an examiner state, and a subject state.

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