JPH09103407A - Subjective optometry device - Google Patents

Abstract

(57) Abstract: Provided is a subjective optometry apparatus capable of promptly performing measurement even by a person who does not have sufficient knowledge about optometry by operating fewer operating members. An operation unit (20) includes a display device (21), an operation key input device (22) that receives an instruction regarding a lens to be loaded and an instruction regarding the progress of a measurement procedure, and one of a plurality of response examples displayed on the display device (21). A plurality of function keys 23a to 23e for selecting
1 corresponds to the question 31 to be asked to the subject, and each of the plurality of response examples 32 to 36 predicted in advance is associated with each response example and each function key. Display in position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subjective optometry apparatus for subjectively performing optometry according to a predetermined measurement procedure.

[0002]

2. Description of the Related Art In a conventional subjective optometry apparatus, a plurality of lenses are combined and loaded in a measurement window, and a subject is allowed to see an optotype through the measurement window in which the lenses are loaded, and the visual condition is checked. By changing the combination of lenses while confirming with the subject, the eye refractive power of the subject is subjectively measured.

Further, in the subjective eye examination apparatus having a function called an eye examination program, the lens state is switched in accordance with a preset measurement procedure, and the visual target displayed on the visual acuity chart apparatus is interlocked by external communication or the like. And switch
It is equipped with a structure that enables smooth measurement.

Further, for example, JP-A-60-179036.
In the prior art as described in Japanese Patent Publication, the device operation member to be operated according to a predetermined measurement procedure has a function of being automatically instructed, even those who are not familiar with the measurement procedure of the optometry. It is configured so that the optometry can be rapidly advanced.

[0005]

However, the above-mentioned Japanese Unexamined Patent Application Publication No.
In the prior art as described in Japanese Patent Application Laid-Open No. 0-179036, it is necessary to provide a large number of device operating members to be operated in order to cope with various processes performed in the measurement procedure of the optometry. For this reason, the above-mentioned conventional techniques have problems such as a complicated device configuration and an increase in the size of the device panel on which the device operation member is arranged.

Further, in the eye examination, a predetermined question is given to the subject according to a measurement procedure that is determined according to the purpose of the examination, and in response to the response from the subject to the question,
It is necessary to switch the displayed optotype or the loaded lens, but in the above-mentioned conventional technology, the content of the question actually asked to the subject and the response from the subject to the question. The interpretation of is up to the individual examiner.

Therefore, there is a possibility that the optometry results may vary due to the experience and knowledge of the optometry of each examiner. If the examiner does not have knowledge about the optometry and operation of the device to be used, it is accurate. There is a problem that it is difficult to perform a large optometry.

The present invention has been made in consideration of the above problems, and it is possible to reduce the number of device operating members and quickly perform optometry even for a person who does not have sufficient knowledge about optometry. It is an object of the present invention to provide a subjective optometry apparatus that can reduce variations in measurement results due to differences in the knowledge of the examiner.

[0009]

In order to achieve the above object, the present invention provides a subjective optometry apparatus that advances the optometry stepwise in accordance with a plurality of preset examination steps,
Display means for switching and displaying a plurality of predicted response examples for each question to the subject performed in each of the preset inspection steps, and the display means displayed in the display means. Selection means for selecting one response example from a plurality of response examples, and one response example can be selected from a plurality of response examples displayed on the display means by switching for each inspection step. And a control unit that associates the selection unit with each of the inspection steps.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An example of an embodiment of a subjective eye examination apparatus to which the present invention is applied will be described below with reference to the drawings.

In this embodiment, the subjective optometry apparatus 1
As shown in FIGS. 1 and 2, the measurement unit 10 includes measurement windows 11L and 11R into which lenses used for the optometry are respectively mounted, and an instruction from an examiner is received, and the measurement unit is received according to the instruction. 10 and an operation unit 20 that controls the operation of the visual acuity device 2 (not shown) to be interlocked.

The operation unit 20 is a display device for displaying a question 31 to be asked to the subject, a plurality of response examples 32 to 36 predicted corresponding to the question, the frequency 30 of the loaded lens, and the like. 21, an operation key input device 22 that receives an instruction regarding the specification of the lens to be loaded and the progress of the measurement procedure, and a multi-function key input device 23 for selecting one of a plurality of response examples displayed on the display device 21. (23a ~
23e).

The operation key input device 22, together with various keys for accepting designation of a lens to be loaded, serves as a key for controlling the progress of the measurement procedure in the optometry, for example, for starting the measurement procedure and advancing to the next step. A forward key 22a for instructing and a return key 22b for instructing the backward movement are provided.

In the present embodiment, the step in the measurement procedure is specified from the operation for controlling the progress in the measurement procedure accepted by the operation key input device 22, and the question to be asked in the specified step is identified. A plurality of response examples corresponding to it are specified.

The multi-function key input device 23 has a plurality of function keys 23 capable of setting arbitrary functions.
a ... 23e, and is arranged at a position adjacent to the display device 21.

The display device 21 responds to a question 31 to be asked to the examinee by each of a plurality of predicted response examples 32 to 36, each response example corresponding to each function key. Display in a position that can be attached.

The operation unit 20 further stores data indicating a measurement procedure of the optometry, a question to the subject, and an example of a response from the subject predicted for each question.
5 and a main control for controlling each part of the operation unit 20 according to a predetermined measurement procedure stored in the memory 25 and outputting a control command for controlling the operation of the measurement unit 10 and the visual acuity chart device 2. Circuit 2
4 and an interface circuit 26 for sending the control command output from the main control circuit 24 to the measurement unit 10.

As shown in FIG. 3, measurement data 251 relating to the measurement procedure of the optometry and data stored in advance in the memory 25 for the examinee at each step of the measurement procedure, as shown in FIG. Question example data 252 regarding a question to be asked, response example data 253 regarding a response example from a subject predicted corresponding to each of the questions, and control regarding control to be performed corresponding to each of the response examples. The data 254 is stored.

As the control data 254, the measurement window 11L or 1 set corresponding to each response example is set.
A lens loading control command for designating a lens to be loaded in 1R, and a visual acuity chart device 2 corresponding to the lens to be loaded.
And an optotype display control command for designating an optotype to be displayed by.

As the question example data 252 or the response example data 253, a text sentence corresponding to the content is directly stored, or a plurality of standard text sentences are separately prepared and the data is Only the correspondence with the standard text sentence is stored.

The main control circuit 24 specifies the step in the measurement procedure of the optometry at the present time according to the input signal from the operation key input device 22, and stores the question to be asked at the specified step in the memory 25. Make a decision based on the available data.

The main control circuit 24 further includes
The content 31 of the determined question and a plurality of response examples 32 to 36 corresponding to the question are displayed on the display screen of the display device 21. Here, when displaying a plurality of response examples 32 to 36, the function key 2 corresponding to each response example is displayed.
The function is set so that the corresponding response example is selected when one of 3 is turned on.

The main control circuit 24 further includes
The selected response example is specified according to the input signal from the multifunction key input device 23, and the control command corresponding to the specified response example is read from the data stored in the memory 25. Further, according to the read control command,
The optotype display control command for controlling the optotype display operation in the visual acuity table device 2 and the lens loading control command for controlling the lens loading operation in the measurement unit 10 are created, and the created control commands are used for the interface circuit 26. To the measurement unit 10.

The operation unit 20 is also connected via an interface circuit 26 to an objective optometry device or an auto lens meter (not shown) to take in data from each device.

The measuring unit 10 includes an interface circuit 101 for receiving each control command sent from the operation unit 20, a plurality of driving mechanisms 104a ... 104n for loading a lens and opening / closing a shutter of a measurement window, and each driving mechanism. And a motor drive circuit 103 that controls a motor that is a drive source included in.

The measuring unit 10 further responds to a remote control signal transmitter 105 for transmitting a control signal for controlling the optotype display operation of the visual acuity device 2, and a control command received via the interface circuit 101. , And a main control circuit 102 for controlling the operations of the motor drive circuit 103 and the remote control signal transmission device 105.

In this embodiment, the visual acuity chart device 2 which is to be linked with the subjective optometry apparatus 1 has an optotype display mechanism 203 for displaying a designated optotype and a remote control signal of the measuring unit 10. A remote control signal reception device 201 that receives a control signal from the transmission device 105, and an optotype display mechanism 2 that displays an optotype according to the received control signal.
And a main control circuit 202 for controlling 03.

Next, the outline of the measurement procedure of the optometry using the subjective optometry apparatus of this embodiment will be described.

The examiner can measure each optometry item according to a preset measurement procedure by pressing the feed key 22a of the operation unit 20 of the subjective optometry apparatus 1 of this embodiment. In each inspection item, the visual acuity device 2 is interlocked, and the optotypes used in the inspection item are displayed.
The auxiliary lens required for inspection is the measurement window 1 of the measurement unit 10.
It is loaded into 1R and 11L and is in a measurement state.

At this time, the examiner can ask the examinee a question by reading the question example 31 displayed on the display device 21 of the operation unit 20. And when I receive a response from the subject,
The keys corresponding to the contents are the function keys 23a to
Select from 23e and press. In the operation unit 20, according to the control operation set according to the pressed key,
Switching of the lens loaded in the measurement unit 10, switching of the visual target displayed on the visual acuity chart device 2, designation of the next measurement step to be performed, and the like are performed.

Next, the details of the operation of this embodiment will be described with reference to FIGS. 4 and 5 by taking the measurement of the perfect correction power of one eye as an example. FIG. 4 shows a flow of the optometry program in this example, and FIG. 5 shows a screen display example when the optometry program is executed.

In this measurement procedure, when the examiner first presses the feed key 22a, a preset optometry program is started (step 1). In step 1, the measurement data of the objective optometry apparatus (not shown) measured in advance is, for example, the communication apparatus and the interface circuit 2
The lens corresponding to the measurement data taken in is loaded into the measurement windows 11R and 11L, and the shielding plate is loaded into the left eye measurement window 11L, and the right eye measurement state is set.

The red / green visual target is displayed on the visual acuity chart device 2, and the spherical power measuring state using the red / green visual target is set (step 2). At this time, the display device 21 of the operation unit 20 displays the contents as shown in FIG. The inspector judges the question example 31 displayed on the display device 21.
By reading a, a question can be asked to the subject. Further, the examiner confirms the response of the subject, and the response examples 32a, 34a, which are displayed in agreement with the response,
35a, 36a, and the corresponding key is selected from the function keys 23a-23e (see FIG. 1) and pressed.

If the response from the subject is "the black circle in red looks darker", this corresponds to the response example 34a, so the function key 23c is pressed. When it is detected that the function key 23c is turned on, the preset control operation corresponding to the response example 34a is executed. That is, the measurement window 11R is loaded with a lens having a value obtained by adding −0.25 diopters to the spherical power of the currently loaded lens, and the same measurement is performed again.

The value of the newly loaded lens is 30a.
Is displayed on the display device 21 every time the lens is switched.

If the response of the examinee is that the black circle in the green looks darker, this corresponds to the response example 35a, so the function key 23d is pressed. Then
As a control operation set corresponding to the response example 35a, the lens having a value obtained by adding the spherical power +0.25 diopter is loaded in the measurement window 11R, and the same measurement is performed again.

If the response from the subject is "the density is almost unchanged", this corresponds to the response example 36a, so the function key 23e is pressed. Then response example 3
As the control operation corresponding to 6a, the spherical power measurement (step 2) is completed and the astigmatic axis measurement state (step 3) is automatically entered.

In step 3, the measuring window 11R is loaded with an auto cross cylinder measuring lens in the astigmatic axis measuring state. Further, a cross cylinder optotype is displayed on the visual acuity chart device 2. Similar to the measurement in step 2, the examiner executes the examination according to the content displayed on the display device 21 of the operation unit 20. That is, a question is asked to the subject by reading the question example 31b shown in FIG.
Response examples 32b, 34b, which correspond to the response of the subject,
Measurement is performed by selecting from 35b and 36b, and selecting the corresponding key from the function keys 23a to 23e and pressing it.

In this step, the response example 34b or 35 is used.
Function key 23c or 23d corresponding to b
By pressing, the astigmatic axis of the lens loaded in the measurement window 11R moves, and this step is repeated until the left and right images appear to have almost the same darkness.

When the subject replies that "the left and right images appear to have almost the same darkness", the function key 23e corresponding to the corresponding response example 36b is pressed. When the function key 23e is pressed, the astigmatic axis measurement (step 3) is completed and the astigmatic power measurement state is automatically entered (step 4).

In step 4, an automatic cross cylinder measuring lens is loaded in the measuring window 11R in the astigmatic power measuring state, and the cross cylinder optotype is continuously displayed on the visual acuity table 2. As with the measurement in step 3,
A question is asked to the subject by reading the question example 31c shown in (c), and one corresponding to the subject's response is selected from the response examples 32c, 34c, 35c, 36c, and the question is answered. Measurement can be performed by selecting a key from the function keys 23a to 23e and pressing it.

By pressing the function key 23c or 23d, the astigmatic power of the lens loaded in the measurement window 11R is changed, and this operation is repeated until the left and right images appear to have substantially the same darkness.

When the examinee replies that "the left and right images appear to have almost the same darkness", the corresponding function key 2
Press 3e. When the function key 23e is pressed, the astigmatic axis measurement (step 4) is completed, and the automatic astigmatic axis measurement is automatically performed as shown in FIG.
The spherical power measurement state using the red / green target as shown in (d) is set (step 5).

In step 5, the lens for measuring the auto-cross cylinder is removed from the measuring window 11R, and the visual acuity chart device 2
Displays a red / green target. The procedure is repeated in the same procedure as the above-described step 2 until the darkness hardly changes, and when the subject responds that the darkness has hardly changed, the function key 23e corresponding to the response example 36d is pressed. This completes the measurement in this step.

In step 6, the measurement state of the maximum visual acuity value is set. In this step, a visual acuity index with a visual acuity value of 0.5 is automatically displayed on the visual acuity chart device 2. At this time, the display device 2
A display as shown in FIG. The examiner reads the question example 31e aloud, causes the subject to read the target in order from the right, and presses the function key 23d or 23e corresponding to the response example 35e or 36e depending on the number of correct answers.

Here, when the function key 23d is pressed, the visual acuity index having a larger visual acuity value is displayed on the visual acuity chart device 2.
When the function key 23e is pressed, a visual acuity index that is one step smaller is displayed on the visual acuity chart device. After the function key 23e is pressed, the measurement is repeated until the function key 23d is pressed (or until the visual acuity index having the visual acuity value of 2.0 is displayed on the visual acuity chart device 2).
The visual acuity value immediately before the function key 23d is pressed is
It is stored as the maximum visual acuity value of the subject, and the visual acuity index is displayed on the visual acuity chart device 2.

Next, the display on the display device 21 is switched as shown in FIG. 5 (f), and the state of final measurement of the perfect correction power of the right eye is reached (step 7). Here, the function key 23a is provided with a function of executing control of an operation to be performed corresponding to the question example 31f.

The examiner reads out the question example 31f and presses the function key 23a to show the state before the pressing and the state after the pressing (spherical power +0.25 on the measurement window 11R).
Ask the subject to compare the appearance with a lens with the added value of diopter). The response of the subject is selected from response examples 33f, 34f, 35f, 36f, and the corresponding keys are the function keys 23b to.
Select from 23e and press.

State before pressing the function key 23a (state before adding spherical power +0.25 diopter)
If the function key 23e corresponding to the response example 36f that "the first is better" is pressed, this operation is repeated until the answer that "is better to see" is displayed before adding spherical power + 0.25 diopters. The lens power is
It is stored as the right eye complete correction power of the subject, and the measurement of the right eye complete correction power is completed.

After the right eye complete correction power is measured as described above, the shielding plate is automatically loaded into the right eye measurement window 11R, and the shielding plate is removed from the left eye measurement window 11L to measure the left eye. Then, the same measurement as the above-described right eye measurement is performed.

As described above, in the subjective optometry apparatus according to the present embodiment, the function key capable of assigning a specific function to each step of the measurement procedure is used as the selection means. As described above, it is not necessary to provide many device operating members, and the device configuration can be simplified.

Further, in this embodiment, a question to be asked in each step of the measurement procedure and a plurality of response examples predicted according to the question are displayed, and further correspond to each of the plurality of response examples. The control operation that should be automatically performed is set.

Therefore, according to the subjective optometry apparatus of this embodiment, even a person who does not have sufficient knowledge about optometry can
For each step of the measurement procedure, a question is asked according to the contents of the displayed question, and a simple operation of selecting a response example corresponding to the response from the subject from among the function keys enables rapid optometry. Can be executed.

In this embodiment, a plurality of response examples from the subject predicted in each measurement step are prepared, each response example is assigned to each of a plurality of function keys, and the function key of each function step is assigned in each measurement step. Although the response of the subject in each measurement step is determined by detecting which is turned on, the means for selecting a response example in the present invention is not limited to this. For example, a touch panel may be used, or buttons corresponding to each response example may be displayed on the display screen, and any one of the buttons may be selected using a mouse or a trackball.

Further, in the present embodiment, a plurality of response examples predicted for each question made during the measurement of the optometry are displayed,
Although each response example is configured to be assigned to a function key, it is not only the response example that is assigned to the function key, but also the operation to be performed corresponding to the question to be asked, as shown in FIG. The function keys may have a function of controlling some operations.

[0056]

According to the present invention, the number of operating members for operating the apparatus is reduced, and even those who only operate the operating members and who do not have sufficient knowledge about optometry,
It is possible to provide a subjective optometry apparatus that can quickly perform optometry.

[0057]

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of an embodiment of an subjective optometry apparatus to which the present invention is applied.

FIG. 2 is a block diagram showing an example of a circuit configuration of the subjective optometry apparatus of FIG.

3 is a block diagram showing an example of contents of data stored in a memory in the circuit configuration of FIG.

FIG. 4 is a flowchart showing an example of a procedure of an optometry program (measurement of perfect correction power of one eye) executed by the subjective optometry apparatus of FIG.

5A is an explanatory diagram showing a screen display example of the display device 21 displayed in step 2 of the optometry program of FIG. FIG. 5B: An explanatory diagram showing a screen display example of the display device 21 displayed in step 3 of the optometry program of FIG. 4. FIG. 5C: An explanatory diagram showing a screen display example of the display device 21 displayed in step 4 of the optometry program of FIG. 4. FIG. 5D: An explanatory diagram showing a screen display example of the display device 21 displayed in step 5 of the optometry program of FIG. 4. FIG. 5E: An explanatory diagram showing a screen display example of the display device 21 displayed in step 6 of the optometry program of FIG. FIG. 5F: An explanatory diagram showing a screen display example of the display device 21 displayed in step 7 of the optometry program of FIG.

[Explanation of symbols]

10: Measuring unit 11R, 11L:
Measurement window 20: Operation unit 21: Display device 22a: Feed key 23a-23e:
Function key 30: Lens power display 31: Question example display 32-36: Response example.

Claims (5)

[Claims] 1. A subjective optometry apparatus for advancing the optometry stepwise in accordance with a plurality of preset examination steps, wherein prediction is performed in response to a question to a subject to be made in each of the preset examination steps. 1 of the plurality of response examples displayed on the display means and the display means for switching and displaying the plurality of response examples for each inspection step
Selecting means for selecting one response example; and selecting for each inspection step so that one response example can be selected from a plurality of response examples displayed by switching on the display means for each inspection step. A subjective optometry apparatus comprising: a control unit that associates the units with each other. 2. The subjective optometry apparatus according to claim 1, further comprising a lens loading mechanism for loading a lens into a measurement window, wherein the control means applies to the subject at each of the preset examination steps. Data relating to questions to be asked, data relating to a plurality of response examples from the subject predicted for the questions in each of the examination steps, and preset corresponding to each of the plurality of response examples Corresponding to the response example selected by the selecting means, based on the storage means for storing at least data relating to a plurality of control commands for controlling the lens loading mechanism, and the data stored in the storing means. Control command specifying means for specifying a control command to be executed, and loading operation control means for controlling the lens loading mechanism according to the specified control command. Visual acuity testing apparatus characterized. 3. The subjective optometry apparatus according to claim 1, wherein the selecting means can set an arbitrary function.
The subjective optometry apparatus comprising a plurality of function keys, wherein the control means assigns each of the plurality of function keys to each of the displayed response examples. 4. The subjective optometry apparatus according to claim 1, wherein the display unit responds to the question content to be asked in the examination step and the question based on the data stored in the storage unit. A subjective optometry apparatus for displaying a plurality of response examples. 5. The subjective optometry apparatus according to claim 2, wherein an optotype display section for displaying an optotype used for the optometry and a remote control signal transmission for transmitting a control signal for controlling the optotype display section. Further comprising means, wherein the storage means stores data relating to a command for designating an optotype to be displayed corresponding to a lens loaded according to a control command of the lens loading mechanism, the remote control signal The transmitting means emits a control signal for displaying the specified optotype according to the control command specified by the control command specifying means.