JP2007268169A - Automatic optometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic optometer which can efficiently conduct a visual acuity test and can improve the reliability of inspection data. <P>SOLUTION: In the automatic optometer equipped with a visual acuity test target presenting means, an inputting means which inputs the decipherment result of a subject to a presentation target, and a storing means which stores a checking program which continuously hastens right eye and left eye inspections, a checking program which automatically judges the visual acuity values of examined eyes by judging the correction of errors of the input decipherment result in relation to an presentation index, when the right eye inspection or the left eye inspection is unnecessary, a skip signal inputting means which inputs a signal for skipping the unnecessary inspection and a skipping means, which skips the unnecessary inspection based on the skip signal after the execution of the checking program, are included. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automatic sight meter that automatically examines the visual acuity of a subject.

Visual acuity that presents a visual target such as a Landolt ring to the subject, inputs the response of the subject's interpretation result to the presented visual target, and determines the correctness of the interpretation result to automatically determine the visual acuity of the subject's eye A total is known (see, for example, Patent Document 1). In this type of visual acuity meter, a program is performed so that one-eye examination of the right eye and the left eye to which the automatic visual acuity determination program is applied in accordance with the start signal of the examination (including the case of visual examination of both eyes) continuously proceeds. There are some that have been set up, and it is possible to perform examinations that reduce the burden on the examiner by mass screening or the like that examines the visual acuity of a large number of subjects. In addition, the subject himself / herself can perform an examination without an examiner using an automatic sight meter installed at the store.
JP 2001-37721 A

  However, some subjects may or may not be able to perform a one-eye examination of the right or left eye. In such a case, in the conventional apparatus, with respect to the inspection that is impossible (unnecessary), an appropriate response is input to complete the one-eye inspection. This consumes unnecessary time and cannot be efficiently inspected. Further, if unnecessary (unknown) inspection data is recorded as a result, the reliability of the inspection data is reduced, and errors are likely to occur in data management.

  In view of the above-described problems of the prior art, it is an object of the present invention to provide an automatic visual acuity meter that can efficiently perform visual acuity inspection and improve the reliability of inspection data.

In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) Vision test target presentation means, input means for inputting the interpretation result of the subject with respect to the presentation target, and determination of correctness of the interpretation result input for the presentation index to determine the visual acuity value of the eye to be examined When the right eye examination or the left eye examination is unnecessary in an automatic eyesight meter that automatically stores an examination program that automatically stores the right eye examination and the left eye examination and that stores the examination program that advances the right eye examination. And a skip signal input means for inputting a signal for skipping the unnecessary inspection, and a skip means for skipping the unnecessary inspection based on the skip signal after the execution of the inspection program. .
(2) The automatic visual acuity meter of (1) includes means for storing or outputting a test result indicating that the skip has been performed by the skip means.
(3) The automatic visual acuity meter of (1) or (2) is of a type in which a visual acuity test target presenting means is arranged inside the housing, and the subject looks into the inspection visual target presented inside the housing with both eyes. It is an automatic visual acuity meter, and further comprises notifying means for notifying the current examination stage of the right eye and the left eye being advanced by the examination program.
(4) Vision test target presentation means, input means for inputting the interpretation result of the subject with respect to the presentation target, and determination of correctness of the interpretation result input for the presentation index to determine the visual acuity value of the eye to be examined In order to inspect the right eye and the left eye individually in an automatic eyesight which is an inspection program for automatic determination and includes a storage means for storing an inspection program for continuously performing a right eye inspection and a left eye inspection A test eye selection means for selecting a test eye, a continuous test mode in which the test is performed by the test program, and the correctness of the interpretation result input to the presentation index for each selection of the test eye by the test eye selection means is determined. A test mode selection means for selecting a single test mode for performing a test for automatically determining the visual acuity value of the eye to be examined, and a selection signal for the test eye by the test eye selection means when the continuous test mode is selected. And a return means for temporarily shifting to the single examination mode with the selected examination eye and returning to the continuous examination mode after the examination is completed.

  According to the present invention, a visual acuity test can be performed efficiently. In addition, the reliability of the inspection data can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of an automatic sight meter according to an embodiment of the present invention.

  Reference numeral 1 denotes an apparatus main body, and binocular inspection windows 2R and 2L are provided on the upper part of the apparatus main body 1 so that a subject can look into a visual target presented inside the housing of the apparatus. An LED 41a that emits green light and an LED 41b that emits orange light are attached to the side surface of the casing of the apparatus main body 1, and visual acuity results measured by two different colors of light emission are expressed in a plurality of stages. .

  The front side of the lower part of the apparatus main body 1 responds to the lever 5 for the subject to respond to the Landolt visual target presented inside the main body in response to the direction (interpretation result). A button 4 is provided. Reference numeral 8 denotes a printer, and 9 denotes a speaker to which a voice guide instruction is output. Reference numeral 40 denotes a start button. When the button 40 is pressed, the inspection is started according to a preset program. Reference numeral 50 denotes a control box connected to the apparatus main body by a cable 51. The control box 50 is provided with a skip button 52. The button 52 is a signal for skipping (cancelling) the automatic inspection for unnecessary inspection eyes when the inspection program for continuously performing the right eye inspection and the left eye inspection (including the case of the binocular inspection) is executed. It becomes a means for inputting. By pressing the button 52 during the examination, it is possible to skip the examination of the currently examined eye. 53 is an inspection mode selection switch for selecting inspection mode selection (the function of the switch 53 is equivalent to the switch 54 of the second embodiment described later). Further, a port (not shown) (indicated by 60 in FIG. 3) is provided on the back of the apparatus main body, and inspection data can be taken into a PC or the like by connecting a cable to this port.

  FIG. 2 is a configuration diagram when the optical system disposed inside the apparatus is viewed from above, and FIG. 3 is a diagram illustrating a configuration when the optical system is viewed from the side and a configuration of the control system.

  Lenses 10R and 10L are arranged on the left and right examination windows 2R and 2L, respectively, and the examination target switched and arranged on the rear target windows 15R and 15L is set at a distant distance of 5 m apparently from the eye ER and EL to be examined. The Further, in the optical path behind the lenses 10R and 10L, the near-inspection lenses 11R and 11L and the convergence prisms 12R and 12L are detachably provided. In addition to the lenses 10R and 10L, the lenses 11R and 11L are provided. By passing through 11L and the converging prisms 12R and 12L, the inspection targets arranged in the target windows 15R and 15L are optically set to a near distance of 40 cm. The lenses 11R and 11L and the converging prisms 12R and 12L are held by the lens holder 13, and the lens holder 13 is moved in the left-right direction by the insertion / removal unit 35, so that each lens is inserted into and removed from the optical path. . The insertion / removal unit 35 has a feed screw 35b and the like rotated by a motor 35a, and the lens holder 13 is slid along with the rotation of the feed screw 35b. Some near distances are 50 cm.

  The left and right optical paths are divided by cylindrical inner covers 14R and 14L having a partition plate in the center, and a visual field space for the left and right eyes to see the target is individually secured. The visual field space of the inner covers 14R and 14L is an internal illumination. The lamps 17R and 17L are individually illuminated. The inner covers 14R and 14L are both formed in the same shape, and the rear target windows 15R and 15L are also provided at the same position. Therefore, when the inside is observed through the inspection windows 2R and 2L with both the left and right eyes, the two visual target windows 15R and 15L are fused and appear as one, as in the case where the inside is observed with the left and right eyes alone. At the same time, the inner covers 14R and 14L are also observed as one space with the same left and right walls.

  The optotype presenting unit 20 that switches and arranges the inspection optotypes in the optotype windows 15R and 15L includes an optotype disc plate 21, a pulse motor 22 for rotating the optotype disc plate 21, It comprises two illumination lamps 24R and 24L that illuminate the target.

  The optotype disc plate 21 is made of a light-transmitting glass substrate, and on the substrate, Landolt in four directions (left, right, up and down) in 12 stages of visual acuity values of 0.1 to 1.0, 1.2 and 1.5. The ring target is formed of a chrome coat having a light shielding property. This inspection optotype is formed so as to correspond to the positional relationship between the two optotype windows 15R and 15L so that the same target for right eye presentation and left eye presentation can be simultaneously presented to the left and right eyes. . The same target on the target disc plate 21 is arranged in the target windows 15R and 15L by the rotation of the motor 22, and each target is illuminated by the illumination lamps 24R and 24L.

  In FIG. 3, reference numeral 30 denotes a control unit that controls the entire apparatus. The voice guide generation unit 31 connected to the speaker 9, the response button 4, the lever 5, the LEDs 41a and 41b, the start button 40, the controller box 50, the port 60, and the like. Is connected. A memory 33 stores an inspection program. The memory 33 also stores examination data for each subject.

  Next, the operation of the apparatus having the above configuration will be described. In a group examination or the like, the apparatus is installed on a table or the like so that the subject can freely perform a visual acuity examination. However, the inspection is started by the examiner accompanying the side of the apparatus main body 1. The examiner also records for each subject. The examiner positions the subject in front of the apparatus main body 1 and turns the visual target windows 15R and 15L, and then presses the start button 40 to start the examination. Then, an inspection start signal is input to the control unit 30. The control unit 30 drives the voice guide generating unit 31 and issues a voice guide from the speaker 9 such as “Measure visual acuity automatically. Tilt the lever lightly”. When the subject tilts the lever 5 in accordance with the voice guide, the control unit 30 receives the signal and puts the apparatus in a movable state. First, the control unit 30 turns on the internal illumination lamps 17R and 17L and the illumination lamps 24R and 24L, and presents a visual target having a visual acuity value of 0.1 to the visual target windows 15R and 15L. From the speaker 9, a voice guide is generated: “Hold the lever lightly with your right hand and attach the left hand to the front button and look into the window.” Next, a voice guide is generated saying “Measure your eyesight. Lightly tilt the lever in the direction that the ring is broken. If you do not know the direction, press the button on the front.” If the response is 5, the vision test program is executed.

  The vision test is programmed so that the distance vision test and the near vision test proceed sequentially in the order of the right eye, the left eye, and both eyes, respectively. The continuous mode selection switch 53 is used to select whether or not the near vision test is performed after the distance vision test and whether or not only the right eye and the left eye are continuously tested without performing the binocular test. In the following description, it is assumed that the above setting is selected. First, as a right eye examination, a visual target with an eyesight value of 0.5 is presented as an initial visual target in the visual target window 15R. The visual field of the left eye is equivalent to a shielded state by turning off the internal illumination lamp 17L and the target illumination light source 24L.

  A program for determining the visual acuity value will be described. Under the control of the control unit 30, the speaker 9 announces “What is the direction?” By the voice guide, and when the target direction can be determined, the subject is instructed to tilt the lever 5 in that direction. When the subject responds with the result of the discrimination of the optotype using the lever 5, the controller 30 determines whether the test is correct. If the response is correct, the visual target with the visual acuity value raised by one level is presented, and if the response is incorrect, the visual target with the visual acuity value lowered by one step is presented. If the answer is incorrect by one step up, or if there is an unreadable response by the button 4, the visual acuity value is returned to the level at which it was visible, and the examination is continued by changing the direction of the visual target. In this way, the visual target to be presented to the subject is sequentially changed according to the program, and if there is a correct answer more than once with the same visual acuity by the correctness determination of the response, the visual acuity value is determined by the control unit 30 as having the visual acuity The

  When the distance vision test for the right eye is completed, the left eye test and the binocular test are similarly performed, and the respective test results are obtained. When the binocular examination is completed, the speaker 9 says, “Measurement of distance vision has been completed. Next, measure the visual acuity of 40 cm at hand. To measure, push the lever down. If not, press the front button. Please give me a voice. " When the subject responds with the lever 5, the near vision test program is executed.

  The control unit 30 drives the insertion / removal unit 35 to arrange the near vision test lens in the test windows 2R and 2L. After that, a voice guide saying "Please push the lever lightly in the direction of the broken ring. If you don't know the direction, press the button on the front." Inspection is performed.

  When all examinations are completed (or after the distance vision test, the button 4 is pressed and the system does not shift to the near vision examination), the speaker 9 says “Finished. The result is printed from the right side.” A guide is issued and the inspection result is output from the printer 8. The inspection result is stored in the memory 33.

  In addition, the control unit 30 controls the lighting of the LEDs 41a and 41b based on the examination eye during the examination. For example, the LED 41a emits light during the examination of the right eye, the LED 41b emits light during the examination of the left eye, and both the LEDs 41a and 41b emit light during the examination of both eyes. This light emission informs the examiner which eye the examinee is currently examining.

  As described above, one subject is examined in the order of the right eye, left eye, and both eyes in a series of programs, and this is performed on each subject one after another. However, depending on the subject, there is a problem in examination efficiency when there is a person who does not need one-eye examination or a person who cannot do one-eye examination. In such a case, even if one-eye examination without examination is started, only an appropriate answer can be given. Further, the inspection result at this time becomes an appropriate value, and confusion is likely to occur in the management of subsequent inspection data.

  Next, an operation for skipping a one-eye examination from a series of examination programs will be described. As described above, the examiner sequentially performs visual acuity tests on the subject. At this time, it is assumed that the examiner knows that the examination of one eye of the subject is not necessary from the report or medical record of the subject who is currently undergoing the examination. Here, the eye that does not need to be examined is the left eye. The examiner presses the start button 40 to start the examination. The examiner confirms the light emission of the LED 41a and knows that the current examination is the right eye. When the examination for the right eye is completed and the examination for the left eye is started, the LED 41a is turned off and the LED 41b emits light. The examiner confirms that the current examination has moved to the left eye from the light emission of the LED 41b, and presses the button 52 of the control box 50. The control unit 30 receives the skip signal from the button 52, skips the left eye examination which is the current examination in the examination program, and also skips the binocular examination performed after the left eye examination. In this way, the subject finishes the visual acuity test by examining only the right eye.

  At this time, in the examination data of the subject, a visual acuity value examined for the right eye, and a value indicating that the left eye examination and the binocular examination are skipped are stored. Even when the inspection result is output from the printer 8, the control unit 30 controls the left eye inspection and the binocular inspection so that the skipped information is printed.

  In the present embodiment, the skip button 52 is provided in the control box 50 different from the apparatus main body 1. However, the present invention is not limited to this. The start button 40 for starting the inspection may have a skip button function during the inspection. In the present embodiment, the control box 50 is connected to the apparatus main body 1 via the cable 51 to perform skipping. However, the present invention is not limited to this. A configuration in which skipping is performed wirelessly may be used. For example, the apparatus main body 1 may be provided with an infrared port, and the control box 50 may be used as an infrared remote control.

  In the present embodiment, the light emission patterns of the LEDs 41a and 41b are used as means for notifying the examiner which test is currently being performed by the examinee. However, the present invention is not limited to this. An audio guide using the guide generator 31 and the speaker 9 may be used. In the present embodiment, the sound emitted from the speaker 9 is intended for the subject. However, if configured so that the sound of the speaker 9 can reach the direction of the examiner such as the side surface or the back surface of the apparatus main body 1, The examiner can know the examination state of the subject. In the present embodiment, it is assumed that the examiner will accompany the visual acuity test, but the present invention is not limited to this. It may be configured such that the subject himself / herself can skip unnecessary examinations. For example, it may be configured to announce a method of skipping the voice guide.

  As described above, the examiner can perform an efficient examination by skipping an examination unnecessary for the subject. In particular, when examining a large number of subjects such as a mass examination, the examination efficiency increases. In addition, since the data is managed so that the skipped inspection eye can be recognized, the reliability of the data is improved.

  Next, a second embodiment of the present invention will be described. FIG. 4 is a diagram showing an operation panel 70 of the apparatus main body. The panel 70 is provided on the upper side of the printer 8 on the side surface of the apparatus main body 1. Reference numeral 71 denotes a selection switch for selecting an examination eye. A switch 71L for selecting a left eye examination, a switch 71C for selecting a binocular examination, and a switch 71R for selecting a right eye examination are prepared. Reference numeral 72 denotes an automatic / manual mode selection switch, which can select an automatic mode in which the above-described inspection program is applied as an inspection method and a manual mode in which the examiner manually selects a visual target and determines a visual acuity value. Reference numeral 54 denotes an inspection mode selection switch. When the automatic mode is selected, the continuous inspection mode that continuously advances the one-eye examination of the right eye and the left eye, and the continuous progression of the binocular examination in addition to the one-eye examination of the right eye and the left eye A binocular examination mode and a single examination mode in which examination of only the examination eye individually selected by the selection switch 71 is advanced can be selected. Reference numeral 73 denotes a near-distance inspection mode switch which can select either the near-distance inspection or the far-distance inspection. 74 and 75 are visual acuity switches for selecting a visual target to be presented in the manual mode. Reference numeral 76 denotes a print button. By setting the print button in advance, the inspection result can be printed from the printer 8 only when the button 76 is pressed.

  In the apparatus main body 1 including such an operation panel 70, the case where the continuous inspection mode in which the binocular inspection is continuously performed in addition to the single eye inspection of the right eye and the left eye is selected as in the previous embodiment will be described. To do. It is convenient to select this mode for group screening. In the selection of the continuous inspection mode, when a subject who does not inspect the left eye is inspected as in the previous case, pressing the right eye inspection switch 71R from the selection switch 71 temporarily cancels the continuous inspection mode. Then, the selected right eye is transferred to a single examination. When the start button 40 is pressed, the control unit 30 starts an examination in which the above-described automatic visual acuity determination program is applied only to the right eye. After completion of this inspection, the control unit 30 returns to the continuous inspection mode.

  In this way, even when there is a subject who examines only one eye, the subject before and after that can be examined in the normal continuous examination mode. It is no longer necessary to cancel the continuous inspection mode and set it to the single inspection mode, and there is no need to forget to switch modes. The single-eye test setting for a subject does not apply to the next subject, so there is an error in testing due to switching of test modes that is likely to occur especially when testing a large number of subjects during a mass screening, etc. It is reduced and inspection can be performed efficiently. Also, inspection data with improved reliability can be obtained.

It is the figure which showed the external appearance of the automatic visual acuity test | inspection apparatus based on this invention. It is a block diagram when the optical system arrange | positioned inside an apparatus is seen from the top. It is the figure which showed the structure when an optical system is seen from the side, and the structure of a control system. It is a figure explaining the panel 70 used by 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 5 Lever 9 Speaker 20 Target presentation part 30 Control part 31 Voice guide generation part 33 Memory 40 Start button 52 Skip button

Claims (4)

Visual acuity test target presentation means, input means for inputting the subject's interpretation result for the presentation target, and the correctness of the interpretation result input for the presentation index is judged to automatically determine the visual acuity value of the subject's eye In an automatic visual acuity meter comprising a storage means for storing a test program for determining a test program for advancing a right eye test and a left eye test continuously,
When a right eye examination or a left eye examination is unnecessary, a skip signal input means for inputting a signal for skipping the unnecessary examination, and an unnecessary examination is skipped based on the skip signal after execution of the examination program And an automatic visual acuity meter comprising: skip means. 2. The automatic visual acuity meter according to claim 1, further comprising means for storing or outputting a test result indicating that the skip has been skipped by the skip means. The automatic sight meter according to claim 1 or 2 is an automatic sight meter of a type in which a visual acuity test target presenting means is arranged inside the housing and the subject looks into the inspection visual target presented inside the housing with both eyes. An automatic acuity meter further comprising an informing means for informing a current examination stage of the right eye and the left eye being advanced by the examination program. Visual acuity test target presentation means, input means for inputting the interpretation result of the subject with respect to the presentation target, and the visual acuity value of the subject eye is automatically determined by determining the correctness of the interpretation result input for the presentation index In an automatic visual acuity meter comprising a storage means for storing a test program for determining a test program for advancing a right eye test and a left eye test continuously,
An inspection eye selection means for selecting an inspection eye for individually inspecting the right eye and the left eye;
Automatically determines the visual acuity value of the eye to be examined by determining the correctness / incorrectness of the interpretation result input to the presentation index for each selection of the inspection eye by the inspection eye selection means and the continuous inspection mode in which inspection is performed by the inspection program An inspection mode selection means for selecting a single inspection mode for performing the inspection to be performed;
When the inspection eye selection signal is input by the inspection eye selection means when the continuous inspection mode is selected, the mode is temporarily shifted to the single inspection mode with the selected inspection eye, and the continuous inspection is performed after the inspection is completed. An automatic visual acuity meter comprising: return means for returning to the mode.