JP2024031230A - Ophthalmologic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ophthalmologic apparatus capable of properly executing an inspection of a subject eye corresponding to a use state of a face fixation attachment.

SOLUTION: An ophthalmologic apparatus 1 comprises an optometrical unit 2, a face fixation part 10, and attachment detection means. The optometrical unit 2 is used to inspect a subject eye of a subject. The face fixation part 10 fixes the face of the subject under inspection to the optometrical unit 2. The attachment detection means detects whether a face fixation attachment 11A is attached to the face fixation part 10. The face fixation attachment 11A is detachably attached to the face fixation part 10 to be in contact with the face of the subject to fix the face.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present disclosure relates to an ophthalmological device for testing an eye to be examined.

Various ophthalmological devices for testing the subject's eye (e.g., eye refractive power measurement device, corneal curvature measurement device, intraocular pressure measurement device, fundus camera, OCT device, laser scanning ophthalmoscopy device (SLO), goniography device, etc.) )It has been known. Testing of the eye to be examined using many ophthalmological apparatuses needs to be performed with the relative position between the eye to be examined and the optometry unit adjusted to an appropriate position. Therefore, the ophthalmological apparatus may include a face fixing section (for example, at least one of a forehead rest and a chin rest) for fixing the relative position of the subject's face with respect to the optometry unit. Furthermore, a face fixing attachment that is detachably attached to the face fixing part may be used. For example, the ophthalmologic apparatus described in Patent Document 1 uses a chin rest cover that is removably attached to the chin rest of the face fixing part to ensure the hygiene of the chin rest.

Japanese Patent Application Publication No. 2006-34858

A face-fixing attachment that can be attached to and removed from the face-fixing unit is an effective tool, but it is desirable to have a technology that allows an ophthalmological device to more appropriately examine the subject's eye depending on the usage status of the face-fixing attachment. It will be done.

A typical object of the present invention is to provide an ophthalmological apparatus that can appropriately perform an examination of a subject's eye depending on the usage status of a face-fixing attachment.

An ophthalmological apparatus provided by a typical embodiment of the present disclosure includes an optometry unit for testing an eye of a subject, and a face that fixes the face of the subject during the test with respect to the optometry unit. A fixing part; and an attachment detection means for detecting whether or not a face fixing attachment, which is detachably attached to the face fixing part and comes into contact with the face of the subject, is attached to the face fixing part. .

According to the ophthalmological apparatus according to the present disclosure, the examination of the subject's eye is appropriately performed depending on the usage status of the face fixation attachment.

FIG. 2 is a right side view showing the appearance of the ophthalmologic apparatus 1. FIG. 1 is a block diagram showing the electrical configuration of an ophthalmologic apparatus 1. FIG. FIG. 2 is a perspective view of the face fixing attachment 11A viewed diagonally from the front right. FIG. 2 is a perspective view of the face fixing attachment 11A viewed diagonally from the rear left. It is a flowchart of the test|inspection process which the ophthalmology apparatus 1 performs. 5 is a diagram showing an example of an image photographed by the photographing section 9 while the face fixing attachment 11A is attached to the face fixing section 10. FIG. FIG. 3 is a perspective view showing a state in which a detected portion 15 is provided on the face fixing section 10 to which the face fixing attachment 11A is attached.

<Summary>
The ophthalmologic apparatus exemplified in the present disclosure includes an optometry unit, a face fixing section, and an attachment detection means. The optometry unit is used to examine the eyes of a subject. The face fixing unit fixes the face of the subject under examination to the optometry unit. The attachment detection means detects whether the face fixing attachment is attached to the face fixing part. The face fixing attachment is removably attached to the face fixing part to come into contact with the subject's face and fix the face.
According to the ophthalmological apparatus according to the present disclosure, whether or not the face fixing attachment is attached to the face fixing section is automatically detected. Therefore, the examination of the subject's eye by the ophthalmologic apparatus is facilitated to be appropriately performed depending on the usage status of the face fixation attachment.

The detailed configuration of the face fixing attachment can be selected as appropriate. For example, the face fixing attachment may be at least one of a forehead rest attachment that contacts the subject's forehead and a chinrest attachment on which the subject's chin is placed. Furthermore, the purpose of attaching the face fixing attachment to the face fixing part is not particularly limited. For example, in order to ensure the hygiene of the face fixing unit, the face fixing attachment may be replaced every time a subject changes. In addition, the relative position of the subject's face with respect to the optometric unit (for example, the position of the face in the direction along the examination axis of the optometric unit (Z direction), or the position of the face in the height direction (Y direction)) ), it may be selected whether or not to use a face fixation attachment depending on the type of examination or the size of the face.

The technology exemplified in this disclosure is for performing an examination of an eye to be examined (e.g., photographing the eye to be examined, measuring ocular characteristics of the eye to be examined, observing the eye to be examined (including observation for surgery or treatment, etc.)) It can be applied to various ophthalmological devices. For example, examples of ophthalmological apparatuses that take images of the eye to be examined include OCT apparatuses, laser scanning ophthalmoscopy apparatuses (SLO), fundus cameras, goniometric apparatuses, and corneal endothelial cell apparatuses. Examples of ophthalmological devices that measure ocular characteristics of an eye to be examined include an eye refractive power measuring device, a corneal shape measuring device, an axial length measuring device, and an intraocular pressure measuring device. Further, the technology exemplified in the present disclosure may be adopted in an ophthalmological apparatus such as a photocoagulation device, a YAG laser surgical device, a slit lamp, etc., for performing surgery or treatment on tissues of a subject's eye while observing the subject's eye.

The ophthalmological apparatus may further include a photographing unit that photographs images. The attachment detection means may detect whether the face fixing attachment is attached to the face fixing section based on the image photographed by the photographing section. For example, the control section of the ophthalmological apparatus may function as an attachment detection means by detecting whether or not a face fixing attachment is attached to the face fixing section based on an image photographed by the photographing section. In this case, any process in the ophthalmological apparatus (for example, the process of aligning the optometry unit with respect to the eye to be examined, the process of examining the eye to be examined, etc.) without the need to newly provide a sensor or switch for detecting the face fixation attachment, etc. Whether or not the face fixing attachment is worn is detected using the image used for at least one of the following. Therefore, whether or not the face fixing attachment is worn can be efficiently and appropriately detected.

As described above, the photographing unit may photograph at least a portion of the subject's face in order for the ophthalmological apparatus to align the optometry unit with respect to the subject's eye. Specifically, the ophthalmologic apparatus may include a drive unit that moves the relative position of the optometry unit with respect to the subject's eye. The control unit of the ophthalmological apparatus may adjust the relative position of the optometry unit with respect to the subject's eye to an appropriate position by controlling the drive unit based on the image photographed by the photographing unit. Furthermore, the photographing range of the photographing section may include at least a portion of the face fixing section. The control section may detect whether the face fixing attachment is attached to the face fixing section based on the image photographed by the photographing section. In this case, the image photographed by the photographing section is shared in the process of positioning the optometry unit with respect to the subject's eye and in the process of detecting whether or not the face fixing attachment is attached. Therefore, whether or not the face fixing attachment is worn can be efficiently and appropriately detected.

However, it is also possible to change the configuration of the imaging section. For example, the photographing unit may be a camera built into the optometry unit (for example, an anterior segment camera capable of photographing the anterior segment of the eye to be examined). In other words, regardless of the location where the imaging section is installed and the purpose for which the imaging section is used, if the attachment/detachment position of the face fixing attachment on the face fixing section is within the imaging range of the imaging section, the imaging section Whether or not the face fixing attachment is worn is appropriately detected based on the image taken by.

A specific method for detecting whether or not the face fixing attachment is worn based on the image photographed by the photographing unit can be selected as appropriate. For example, the control unit of the ophthalmological apparatus may detect whether or not the face fixing attachment is worn by performing known image processing on the image captured by the imaging unit. Further, the control unit may obtain the detection result by inputting the photographed image to a mathematical model trained by a machine learning algorithm to detect whether or not the face fixation attachment is worn.

At least one of the part of the face fixing part where the imaging unit side is shielded when the face fixing attachment is attached, and the part of the face fixing attachment that faces the imaging part side when attached to the face fixing part. A detection unit may be provided that improves the accuracy of detecting whether or not the face fixing attachment is worn based on the image photographed by the photographing unit. In this case, whether or not the face fixing attachment is worn can be detected with high accuracy depending on whether or not the detected part is included in the image photographed by the photographing section.

Note that the specific configuration of the detected section can be selected as appropriate. For example, by making the color, pattern, or pattern of the detected part different from that of other parts (e.g., a color that is easily detected by image processing), the accuracy of detection using images can be improved. May be improved. Further, the detection accuracy based on the image may be improved by setting the shape of the detected portion to be a shape that is easily detected by image processing (for example, a shape having a corner that is easily detected by edge detection, etc.).

In the present disclosure, a case will be exemplified in which whether or not a face fixing attachment is attached to a face fixing section is detected based on an image photographed by a photographing section. However, it is also possible to detect whether or not a face fixing attachment is worn without using a captured image. For example, the ophthalmologic apparatus may include a sensor, a switch, or the like for detecting whether or not a face fixing attachment is attached to the face fixing section. That is, a sensor, a switch, or the like may be used as the attachment detection means. Even in this case, the examination of the subject's eye by the ophthalmologic apparatus can be easily performed appropriately depending on the usage status of the face fixation attachment.

The ophthalmologic apparatus may further include a drive unit that moves the relative position of the optometry unit with respect to the eye to be examined. The control unit may change the movement control of the optometry unit by the drive unit depending on the detection result of whether or not the face fixing attachment is worn. In this case, the optometry unit is appropriately moved depending on whether or not the face fixing attachment is attached. Therefore, the examination of the subject's eye by the ophthalmologic apparatus is facilitated to be appropriately performed depending on the usage status of the face fixation attachment.

Note that a specific method for changing the movement control of the optometry unit can be selected as appropriate depending on whether or not the face fixing attachment is attached. For example, when the forehead rest attachment is not attached, the distance between the face fixed by the face fixing section and the optometry unit is shorter than when the forehead rest attachment is attached. Therefore, when the forehead rest attachment is not attached, the optometry unit and the face are likely to come into contact. Therefore, the control unit changes the movement control of the optometry unit so that when the forehead rest attachment is not attached, the range of movement of the optometry unit toward the face is shorter than when the forehead rest attachment is attached. Good too. As a result, the possibility that the optometry unit will come into contact with the face is appropriately reduced.

Furthermore, when the chin rest attachment is not attached, the height of the face fixed by the face fixing section is lower than when the chin rest attachment is attached. Therefore, the control unit controls the movement of the optometry unit so that when the forehead rest attachment is not attached, the initial position when starting the movement of the optometry unit is lower than when the forehead rest attachment is attached. May be changed. As a result, the time required for adjusting the relative position of the optometry unit to the eye to be examined to an appropriate position can be easily shortened.

The control unit of the ophthalmological apparatus may execute a detection result notification step of notifying the examiner of the detection result of whether or not the face fixing attachment is worn by the attachment detection means. In this case, the examiner can properly perform the examination of the subject's eye after understanding whether the face fixing attachment is attached to the face fixing section.

The control unit of the ophthalmological apparatus may determine whether the face fixing attachment has been removed from the face fixing unit and attached to the face fixing unit based on the detection result of whether the face fixing attachment is attached. good. If the control unit determines that the face fixation attachment has not been removed and attached since the last eye examination was completed, the control unit notifies the examiner that the face fixation attachment has not been replaced. Good too. In this case, the examiner can appropriately perform the examination of the subject's eye after understanding whether or not the face fixing attachment has been replaced. Therefore, it becomes easier to ensure the hygiene level of the face fixing part.

<Embodiment>
Hereinafter, one typical embodiment according to the present disclosure will be described with reference to the drawings. The ophthalmological apparatus 1 of the present embodiment examines the eye E to be examined in a state where the relative position with respect to the eye E to be examined is adjusted to an appropriate position (for example, with the examination axis aligned with the eye E to be examined). . The ophthalmological apparatus 1 illustrated in this embodiment is an eye refractive power measurement apparatus that measures the eye refractive power of the eye E to be examined. However, the ophthalmologic apparatus 1 includes a device that performs a test different from the measurement of eye refractive power (for example, an OCT device, a laser scanning ophthalmoscope (SLO), a fundus camera, a goniometer, a corneal endothelial cell imager, a corneal endothelium cell imager, and a corneal endothelium cell imager). It may be a curvature measuring device, an intraocular pressure measuring device, an axial length measuring device, etc.). In the following explanation, the optical axis direction of the light used for inspection is referred to as the Z-axis direction (front-back direction), the horizontal direction perpendicular to the Z-axis direction is referred to as the X-axis direction (left-right direction), and the direction perpendicular to both the Z-axis and the X-axis. is the Y-axis direction (vertical direction).

(Schematic configuration)
A schematic configuration of the ophthalmologic apparatus 1 will be described with reference to FIG. 1. The ophthalmological apparatus 1 of this embodiment includes a housing 3, a base 5, a face fixing section 10, an optometry unit 2, an operation section 60, a driving section 4, a control section 50, a display section 8, a photographing section 9, and the like. The housing 3 includes a base 5 and various components of the ophthalmologic apparatus 1 (for example, the optometry unit 2, the drive unit 4, the control unit 50, etc.). The base 5 of the housing 3 supports the entire ophthalmologic apparatus 1 . The face fixing unit 10 fixes the face of the subject under examination to the optometry unit 2 . The face fixing unit 10 of this embodiment includes a forehead rest 11 that contacts the forehead of the subject, and a chin rest 12 on which the chin of the subject is placed. Furthermore, a face fixing attachment (a forehead rest attachment in this embodiment) 11A may be attached to the face fixing unit 10 of this embodiment. Details of the face fixing attachment 11A will be described later. Note that although the face fixing section 10 of this embodiment is provided on the base 5, the face fixing section 10 may be provided independently of the base 5.

The optometry unit 2 examines the eye E to be examined. The optometry unit 2 may include a configuration (an optical system in this embodiment) for testing at least one of the eye refractive power, corneal curvature, and intraocular pressure of the eye E to be examined, for example. Further, the optometry unit 2 may include an optical system for photographing the tissue of the eye to be examined. The drive unit 4 moves the relative position between the eye E and the optometric unit 2 by moving the optometric unit 2 in the up, down, left, right, front and rear directions (three-dimensional direction) with respect to the base 5. Note that the drive unit 4 may move the relative position between the eye E and the optometric unit 2 by moving the face fixing unit 10 together with the optometric unit 2 or instead of the optometric unit 2.

The operation unit 60 is operated by the examiner in order to input various instructions such as an instruction to move the optometry unit 2 and an instruction to start performing an examination. The control unit 50 manages various controls in the ophthalmologic apparatus 1 . The display unit 8 displays various images (for example, an observation image of the eye E, measurement results, etc.). In this embodiment, a touch panel is provided on the surface of the display section 8. The touch panel is used as one of the operating units 60 operated by the examiner to input various instructions. Note that the display section 8 may be provided independently of the housing 3. The photographing unit 9 photographs images. The photographing unit 9 of this embodiment photographs at least a portion of the subject's face. Furthermore, the photographing range of the photographing section 9 of the present embodiment includes the attachment/detachment position of the face fixing attachment 11A in the face fixing section 10 (that is, the vicinity of the forehead rest 11).

(Electrical configuration)
With reference to FIG. 2, the electrical configuration of the ophthalmologic apparatus 1 of this embodiment will be described. As described above, the ophthalmologic apparatus 1 includes the control section 50. The control unit 50 includes a CPU (controller) 51, a RAM 52, a ROM 53, and a non-volatile memory (NVM) 54. The CPU 51 manages various controls of the ophthalmologic apparatus 1 . The RAM 52 temporarily stores various information. The ROM 53 stores various programs, initial values, and the like. The nonvolatile memory 54 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, or the like may be used as the nonvolatile memory 54. In this embodiment, an ophthalmological apparatus control program and the like for executing examination processing to be described later are stored in the nonvolatile memory 54.

The control section 50 is connected to the drive section 4, display section 8, operation section 60, photographing section 9, and optometry unit 2 described above. The ophthalmological apparatus 1 illustrated in this embodiment is an eye refractive power measurement apparatus that measures the eye refractive power of a subject's eye. Therefore, the optometry unit 2 includes a configuration for measuring eye refractive power. The optometry unit 2 of this embodiment includes a measurement light source 21, a measurement imaging element 22, an observation imaging element 23, and the like. The measurement light source 21 emits light that is projected onto the fundus of the eye. The measuring imaging element 22 receives ring-shaped reflected light from the fundus of the eye. The eye refractive power is calculated based on the received ring-shaped reflected light. The observation photographing element 23 photographs the anterior segment of the eye to be examined. Note that, since the configuration of the optometry unit 2 can be the same as that of a conventional ophthalmologic apparatus, a description of the arrangement of the configuration of the optometry unit 2, etc. will be omitted. Furthermore, it goes without saying that the configuration of the optometry unit 2 may be changed depending on the content of the examination performed by the ophthalmologic apparatus.

(Face fixation attachment)
An example of the face fixing attachment 11A used in the ophthalmologic apparatus 1 of this embodiment will be described with reference to FIGS. 1, 3, and 4. As described above, the face fixing attachment 11A may be attached to the face fixing section 10 (see FIG. 1) of this embodiment. Although details will be described later, the ophthalmologic apparatus 1 detects whether or not the face fixing attachment 11A is attached to the face fixing section 10. In addition, in this embodiment, the case where the forehead rest attachment which contacts the forehead of a subject is used is illustrated as the face fixation attachment 11A. However, other attachments (for example, a chin rest attachment on which the subject's chin is placed) may be used as the face fixing attachment 11A instead of or together with the forehead rest attachment. When a plurality of face fixing attachments 11A are used, in the inspection process described later, the presence or absence of attachment of all of the plurality of face fixing attachments 11A may be detected, or the presence or absence of attachment of some of the plurality of face fixing attachments 11A may be detected. The presence or absence of attachment may be detected.

As shown in FIGS. 3 and 4, the face fixing attachment 11A of this embodiment includes a face contacting part 13A and a mounting part 14A. The face contact section 13A fixes the position of the face during the test by contacting the face (in this embodiment, the forehead) of the subject to be tested. The mounting section 14A attaches the face fixing attachment 11A to the face fixing section 10 in a detachable manner. Specifically, the mounting section 14A of this embodiment includes a right mounting section 14AR and a left mounting section 14AL. The face fixing attachment 11A is removably attached to the face fixing part 10 by fitting the right mounting part 14AR and the left mounting part 14AL into the forehead rest 11 (see FIG. 1) in the face fixing part 10 from above.

As shown in FIG. 4, a detection target portion 15A is provided in a part of the face fixing attachment 11A that faces the imaging unit 9 (see FIG. 1) when attached to the face fixing unit 10 (see FIG. 1). It is being The detected section 15A improves the detection accuracy when detecting whether or not the face fixing attachment 11A is worn based on the image photographed by the photographing section 9. That is, in the present embodiment, when the detected portion 15A is included in the image photographed by the photographing section 9, it is detected that the face fixing attachment 11A is attached. On the other hand, if the detected part 15A is not included in the image photographed by the photographing section 9, it is detected that the face fixing attachment 11A is not attached. As an example, in this embodiment, when the face fixing attachment 11A is attached to the face fixing section 10, the back side of the attached section 14A that is reflected in the photographing area of the photographing section 9 (in detail, the right attached section 14AR and the left attached section A detected portion 15A is provided on the back side of each portion 14AL.

As an example, in the present embodiment, the color, pattern, or pattern of the detected portion 15A may be a different color, pattern, or pattern from that of other parts (for example, a color that is easily detected by image processing). , the detection accuracy based on images is improved. Furthermore, the detection accuracy based on the image may be improved by making the shape of the detected portion 15A into a shape that is easily detected by image processing (for example, a shape having a corner that is easily detected by edge detection).

(Inspection processing)
Referring to FIGS. 5 and 6, the inspection process executed by the ophthalmologic apparatus 1 of this embodiment will be described. In the test process, it is detected whether or not the face fixing attachment 11A is attached to the face fixing unit 10, and the eye to be examined is tested. In addition, in this embodiment, the case where one face fixation attachment 11A is used is illustrated. However, when a plurality of face fixing attachments 11A are used, the presence or absence of attachment of all of the plurality of face fixing attachments 11A may be detected in the inspection process. When the power is turned on, the control unit 50 (CPU 51) of the ophthalmologic apparatus 1 executes the inspection process illustrated in FIG. 5 according to the ophthalmologic apparatus control program stored in the storage device (for example, the ROM 53).

First, the control section 50 acquires an image photographed by the photographing section 9 (S1). In this embodiment, a moving image is photographed by the photographing section 9. In S1, the latest image taken at that time is acquired. As described above, the photographing range of the photographing section 9 of the present embodiment includes the attachment/detachment position of the face fixing attachment 11A in the face fixing section 10 (that is, the vicinity of the forehead rest 11).

The control unit 50 detects whether the face fixing attachment 11A is attached to the face fixing unit 10 based on the image acquired in S1 (S2). Therefore, the face fixing attachment 11A can be used in any process in the ophthalmological apparatus 1 (in this embodiment, the process of positioning the optometry unit 2 with respect to the subject's eye) without providing a new sensor or switch for detecting the face fixing attachment 11A. Using the image, whether or not the face fixing attachment 11A is worn is detected. Therefore, whether or not the face fixing attachment 11A is worn can be efficiently and appropriately detected. Note that in S2 of the present embodiment, the control unit 50 performs known image processing on the image photographed by the photographing unit 9 to detect whether or not the face fixing attachment 11A is attached.

In S2 of the present embodiment, whether or not the face fixing attachment 11A is attached is detected depending on whether the detected portion 15A is included in the image photographed by the photographing section 9. As shown in FIG. 6, the face fixing attachment 11A attached to the face fixing unit 10 may not be clearly visible in the image captured by the capturing unit 9. However, as described above, the face fixing attachment 11A of the present embodiment is provided with the detection portion 15A that improves the accuracy when detecting whether or not the face fixing attachment 11A is attached using an image. In the image shown in FIG. 6, although the shape of the face fixing attachment 11A is unclear, the detected part 15A provided on the face fixing attachment 11A is clearly visible and can be easily detected by image processing. Therefore, by using the detected portion 15A, whether or not the face fixing attachment 11A is attached can be easily detected with high accuracy from the image. Specifically, when the image photographed by the photographing section 9 includes the detected portion 15A, the control section 50 detects that the face fixing attachment 11A is attached. On the other hand, if the detected portion 15A is not included in the image photographed by the photographing section 9, the control section 50 detects that the face fixing attachment 11A is not attached.

Next, the control unit 50 stores the detection result of whether the face fixing attachment 11A is worn or not, obtained in S2, in a storage device (for example, the RAM 52, etc.) and notifies the examiner (S3). A specific method for notifying the examiner of the detection result of whether or not the face fixing attachment 11A is worn can be selected as appropriate. For example, the control unit 50 may notify the examiner of the detection result by controlling lighting of a lamp indicating which detection result is the detection result. Further, the control unit 50 may notify the examiner of the detection result by displaying the detection result on the display unit 8. The control unit 50 may notify the examiner of the detection result by generating a sound indicating the detection result.

The control unit 50 sets movement control parameters for the optometry unit 2 by the drive unit 4 (see FIGS. 1 and 2) according to the detection result of the presence or absence of the face fixing attachment 11A acquired in S2 (S4). . That is, the control section changes the movement control of the optometry unit 2 by the drive section 4 according to the detection result of whether or not the face fixing attachment 11A is attached. As a result, the optometry unit 2 is appropriately moved depending on whether or not the face fixing attachment 11A is attached.

In detail, when the face fixing attachment 11A (in this embodiment, the forehead rest attachment) is not attached, the face fixed by the face fixing part 10 is different from the case where the face fixing attachment 11A is attached. The distance between the optometry units 2 becomes shorter. Therefore, when the face fixing attachment 11A is not attached, the optometry unit 2 and the face are likely to come into contact. Therefore, the control unit 50 of the present embodiment controls the optometric unit 2 so that when the face fixing attachment 11A is not attached, the range of movement of the optometric unit 2 toward the face is shorter than when the face fixing attachment 11A is attached. 2. Set the movement control parameters. As a result, the possibility that the optometry unit 2 and the face will come into contact is appropriately reduced.

Note that a chin rest attachment may be used as the face fixing attachment. When the chin rest attachment is not attached, the height of the face fixed by the face fixing section 10 is lower than when the chin rest attachment is attached. Therefore, when the forehead rest attachment is not attached, the control unit 50 is set to an initial position (for example, a standby position before movement) when starting the movement of the optometry unit 2, compared to when the forehead rest attachment is attached. The movement control parameters of the optometry unit 2 may be set so as to lower the . As a result, the time required for adjusting the relative position of the optometry unit 2 to the eye to be examined to an appropriate position can be easily shortened.

Next, the control unit 50 determines whether an instruction to start the examination of the subject's eye by the optometry unit 2 has been input (S6). If no input has been made (S6: NO), the process returns to S1. When the instruction to start the examination is input (S6: YES), the control unit 50 determines whether the face fixation attachment 11A is being worn (S7). If it is not being worn (S7: NO), the control unit 50 executes alignment of the optometry unit 2 with respect to the eye to be examined (S9). In S9 of the present embodiment, the control unit 50 automatically adjusts the relative position of the optometry unit 2 with respect to the eye to be examined to an appropriate position by controlling the drive unit 4 based on the image photographed by the photographing unit 9. In other words, the image photographed by the photographing section 9 is used both for alignment (position adjustment) of the optometry unit 2 with respect to the subject's eye and for detecting whether or not the face fixing attachment 11A is attached. Next, an examination of the subject's eye is performed by the optometry unit 2 (S10), and the process returns to S1.

If the face fixing attachment 11A is being worn (S7: YES), it is determined whether the face fixing attachment 11A being worn has been replaced after the previous examination was performed (S8). In S8 of the present embodiment, the control unit 50 removes the face fixing attachment 11A from the face fixing unit 10 and attaches it to the face fixing unit 10 after the previous eye examination (S10) is completed. Whether or not this has been done is determined based on the detection result of whether or not the face fixing attachment 11A is worn. When the control unit 50 determines that the face fixing attachment 11A has been removed and attached after the previous eye examination (S10) was completed (S8: YES), the control unit 50 aligns the optometry unit 2 (S9), Then, an examination of the subject's eye (S10) is performed, and the process returns to S1.

On the other hand, if the control unit 50 determines that the face fixing attachment 11A has not been removed and attached since the previous eye examination (S10) was completed (S8: NO), the face fixing attachment 11A is The examiner is notified that it has not been replaced (S11). As a result, the examiner can properly perform the examination of the subject's eye after understanding whether or not the face fixing attachment 11A has been replaced. Therefore, it becomes easier to ensure the hygiene level of the face fixing section 10. In this embodiment, if it is determined that the face fixing attachment 11A has not been replaced (S8: NO), the examiner is only notified that it has not been replaced (S11), and the eye to be examined is checks are not performed. However, when a test is performed on the same subject, or when the face fixing section 10 is disinfected, the test may be performed without replacing the face fixing attachment 11A. Therefore, even if the examiner is notified that the face fixing attachment 11A has not been replaced, the processes of S9 and S10 may be executed.

The techniques disclosed in the above embodiments are merely examples. Therefore, it is also possible to modify the techniques exemplified in the above embodiments. For example, in the above embodiment, the detected part 15A for improving the detection accuracy of the face fixing attachment 11A in an image is photographed when the detected part 15A is attached to the face fixing part 10 (see FIG. 1) of the face fixing attachment 11A. It is provided at a portion facing the section 9 (see FIG. 1) side. However, it is also possible to change the position of the detected part. For example, as shown in FIG. 7, the detected part 15 is a part of the face fixing part 10 that is shielded on the imaging part 9 (see FIG. 1) side when the face fixing attachment 11A is attached (in FIG. 14A). If the detected portion 15 is included in the image photographed by the photographing section 9, the control section 50 detects that the face fixing attachment 11A is not attached. On the other hand, if the detected portion 15 is not included in the image photographed by the photographing section 9, the control section 50 detects that the face fixing attachment 11A is attached. As a result, whether or not the face fixing attachment 11A is worn can be detected with high accuracy.

Further, in the embodiment described above, the examiner is notified that the face fixing attachment 11A has not been replaced when an instruction to start the examination is given. However, the control unit 50 may notify the examiner that the face fixing attachment 11A has not been replaced until the replacement of the face fixing attachment 11A is completed after each examination is completed. In this case, the examiner can appropriately understand that the face fixing attachment 11A needs to be replaced.

1 Ophthalmology apparatus 2 Optometric unit 4 Drive section 9 Photographing section 10 Face fixing section 11A Face fixing attachment 15, 15A Detected section 50 Control section 51 CPU

Claims (6)

an optometry unit for testing the eye of a subject;
a face fixing unit that fixes the face of the subject under examination to the optometry unit;
Attachment detection means for detecting whether or not a face fixing attachment that is detachably attached to the face fixing unit and comes into contact with the face of the subject is attached to the face fixing unit;
An ophthalmological device characterized by comprising: The ophthalmological device according to claim 1,
It is further equipped with a photography section for taking images.
The ophthalmological apparatus is characterized in that the attachment detection means detects whether or not the face fixing attachment is attached to the face fixing section based on an image photographed by the photographing section. The ophthalmological device according to claim 2,
A part of the face fixing unit that shields the imaging unit side when the face fixing attachment is attached, and a part of the face fixing attachment that shields the imaging unit side when the face fixing attachment is attached. An ophthalmological apparatus characterized in that a detected part is provided on at least one of the parts to be faced, which improves detection accuracy based on an image photographed by the photographing part. The ophthalmological device according to claim 1,
Further comprising a drive unit that moves the relative position of the optometry unit with respect to the eye to be examined,
The ophthalmologic apparatus is characterized in that the control unit of the ophthalmologic apparatus changes movement control of the optometry unit by the drive unit according to a detection result of whether or not the face fixing attachment is worn. The ophthalmological device according to claim 1,
The ophthalmologic apparatus is characterized in that the control unit of the ophthalmologic apparatus notifies an examiner of a detection result of whether or not the face fixing attachment is worn by the attachment detection means. The ophthalmological device according to claim 1,
The control unit of the ophthalmological apparatus includes:
Determining whether the face fixing attachment has been removed from the face fixing unit and attached to the face fixing unit based on a detection result of whether the face fixing attachment is attached,
If it is determined that the face fixing attachment has not been removed and attached since the last eye examination was completed, the examiner is notified that the face fixing attachment has not been replaced. Ophthalmological equipment.

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