JP2009066057A - Optotype presentation apparatus for optometry - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optotype presentation apparatus for optometry, which makes it possible to effectively utilize the registered data of a visual acuity value when reexamining visual acuity. <P>SOLUTION: When a subject ID is inputted to a display control circuit 5, the circuit 5 reads examination information corresponding to the subject ID from an information recorder 6 and causes an optotype for reexamination and a message based on the read examination information to be displayed on a display screen 2b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an optometric target presenting apparatus that presents a subject with an optotype for optometry.

  In general, a subjective optometry system includes a subjective optometry apparatus having a pair of left and right optometry units provided with an optometry window, and an index presenting apparatus that presents a visual target. In this subjective optometry system, the visual acuity table and the like displayed on the index presenting device are visually recognized by the left and right eyes of the subject through the optometry windows of the pair of left and right optometry units, and the visual acuity of the subject is examined. (For example, refer to Patent Document 1). A device using a liquid crystal display can be considered as the index presentation device.

  In addition, in this index presenting device, a target recording means in which a large number of targets are recorded is incorporated in the liquid crystal display, and a target selection signal is transmitted from the remote control to the liquid crystal display by infrared rays to record the target. It is also known that a target recorded in a means is selected and the selected target is displayed on a display screen of a liquid crystal display (see, for example, Patent Document 2).

In a visual acuity test using such an index presenting device, it is common to show visual targets of different sizes to the subject in order and determine the visual acuity value on the spot. And the visual acuity value obtained in this way is registered (recorded) together with the subject ID.
JP 2007-61380 A JP 2006-198286 A

  However, conventionally, the registered visual acuity value data has not been effectively used in the reexamination of visual acuity.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an optometric target presenting apparatus in which registered visual acuity value data can be used effectively during visual acuity reexamination.

  In order to achieve this object, the invention of claim 1 has a case provided with a display screen to be visually recognized by the subject, and the case records a number of targets to be presented to the subject. A target recording means, a receiver for receiving a target selection signal from a transmission unit of the target selection apparatus, and a target recording means recorded on the target recording means based on the target selection signal input to the receiver An optometrist presenting apparatus comprising display control means for selectively displaying the plurality of targets on the display screen, wherein the case is configured to display examination information based on the targets displayed on the display screen. Information recording means for recording together with the person's ID, and the display control means reads out and reads out the examination information corresponding to the subject ID from the information recording means when the subject ID is inputted. The inspection information Characterized in that the optotype or messages for reinspection was the display's eye optotype presenting apparatus for displaying on the screen based on.

  According to this configuration, the display control means reads the test information corresponding to the subject ID from the information recording means when the subject ID is input, and the retest target based on the read test information. And the message are displayed on the display screen, so that the registered visual acuity value data can be used effectively when the visual acuity is reexamined.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Constitution]
FIG. 1 shows a subjective optometry system. This subjective optometry system includes a subjective optometry apparatus 1 and a target presentation apparatus 2.

  This subjective optometry apparatus 1 has left and right optometry units 1L and 1R, and the optometry units 1L and 1R have optometry windows Lw and Rw. In the optometry units 1L and 1R, a large number of turret boards (not shown) are rotatably provided by a pulse motor, and the turret board (not shown) has inspection lenses, polarizing plates, transparent windows and the like having different frequencies. Is provided. Since these optometry units 1L and 1R can adopt a known configuration, a detailed description thereof will be omitted.

  In addition, a liquid crystal display is used for the optotype presenting apparatus 2. This optotype presenting apparatus 2 includes a case 2a and a display screen (display device main body, that is, a liquid crystal display screen) 2b provided on the front surface of the case 2a.

  In this case 2a, as shown in FIG. 2, the target recording device (target recording means) 3, the receiving device 4, the display control circuit (display control means) 5, the information recording device (information recording means) 6 Is provided.

  The optotype recording device 3 uses a memory, and records a large number of optotypes to be presented to the subject. The receiving device 4 uses a light receiving optical system that receives infrared rays. The receiving device 4 receives (receives) an infrared target selection signal from a transmitter (not shown) of the remote controller (target selection device) 7 of FIG. Further, the display control circuit 5 selectively displays a number of targets recorded in the target recording means 3 on the display screen based on the target selection signal input to the receiving device 4.

In addition, the information recording device 6 uses a memory so that examination information based on the target displayed on the display screen 2b is recorded together with the subject ID.
[Action]
Next, the operation of the optotype presenting apparatus 1 having such a configuration will be described.
(1) Initial visual acuity test In such a configuration, when the examiner conducts visual acuity examination of the subject using the optotype presenting apparatus 1, the examiner (patient) ID is transmitted from the remote controller 7 by infrared rays. It transmits to the receiver 4 of the optotype presenting apparatus 2. A controller (not shown) of the subjective optometry apparatus 1 is provided with an infrared transmission unit (not shown) similar to that of the remote controller 7, and the subject (patient) ID is transmitted by infrared from the transmission unit of the controller. You may make it transmit to the receiver 4 of the optotype presenting apparatus 2. FIG.

  By this transmission, the display control circuit 5 records the subject ID in the information recording device 6, and displays the “test history (test contents), test results, test time, etc. associated with the subject's visual acuity test in the information recording device 6. Control for recording in correspondence with the subject ID ”is started.

  Further, by operating the remote controller 7, an infrared operation signal (target selection signal) from the remote controller 7 is transmitted to the receiver 4 of the target presentation device 1. When the operation signal is received by the receiving device 4, the operation signal is input to the display control circuit 5.

  When receiving the operation signal (target selection signal) from the remote controller 7, the display control circuit 5 calls the target corresponding to the operation signal from the target recording device 3 and displays it on the display screen 2b. For example, the display control circuit 5 calls a target such as a Landolt ring or a character or another target such as a target for a red / green test and displays the target on the display screen 2b.

  Further, when the eyesight value of the naked eye is obtained using the Landolt ring, the left and right eyes of the subject 8 in FIG. 1 are allowed to look into the optometry windows Lw and Rw of the optometry units 1L and 1R, respectively, and within the optometry windows Lw and Rw. Only the side corresponding to the inspection side of the left and right eyes is opened, and the display screen 2b is visually recognized by the eye on the inspection side. For example, when obtaining the naked eye vision value of the left eye, the optometry window Lw is opened, the optometry window Rw is blocked, and the display screen 2b is visually recognized by the left eye via the optometry window Lw.

  In this state, first, a large Landolt ring is displayed on the display screen 2b, and the left eye of the subject is inquired about the direction of the break of the Landolt ring on the display screen 2b. If the response is correct, the size of the Landolt ring displayed on the display screen 2b is reduced by the operation of the remote controller 7, and the same inquiry is performed. Such an operation is repeated until the direction of the cut of the Landolt ring becomes invisible. In the case of characters, the size of the characters to be displayed on the display screen 2b is reduced in order, and the process is repeated until the character cannot be recognized.

  The switching history of the Landolt ring and the character size accompanying this operation, the visual acuity value data accompanying this switching, the time required for the switching, and the like are sequentially recorded in the information recording device 6 by the display control circuit 5.

  By such an operation, the naked eye vision value can be determined from the smallest one that can recognize the direction and character of the Landolt ring, so the smallest one that can recognize the direction and character of the Landolt ring that can be recognized by this left eye. Is displayed on the display screen 2b, a recording command signal for recording (registering) the naked eye vision value of the left eye is transmitted from the remote controller 7 to the receiving device 4 of the target presentation device 2 by infrared rays.

  When the display control circuit 5 receives the recording command signal from the remote controller 7, the display control circuit 5 determines the direction of the Landolt ring break that can be recognized by the left eye of the subject 8 and the minimum visual acuity value that can be recognized by the character. A value is recorded in the information recording device 6 corresponding to the subject ID.

  If the naked eye visual acuity value of the left eye of the subject 8 obtained in this way is 0.2, for example, this 0.2 is applied to the information recording device 6 as the naked eye visual acuity value of the left eye of the subject 8. Recorded along with the examiner ID.

  Further, when the corrected visual acuity value is, for example, 0.5 based on the naked eye visual acuity value 0.2 of the left eye, the Landolt ring and characters having the visual acuity value of 0.5 are displayed on the display device 2b and the display device A prescription value is created by setting an inspection lens (not shown) capable of recognizing the direction of the cut of the Landolt ring and characters displayed in 2b as a correction lens in the optometry window Lw of the inspection unit 1L.

  When the corrected visual acuity value is 0.5, for example, the corrected visual acuity value 0.5 is also recorded in the information recording device 6 together with the subject ID as a corrected visual acuity value for the left eye of the subject 8.

Such examination and recording are also performed on the right eye. Also, other inspections are recorded. Further, as shown by a broken line in FIG. 2, an infrared or wireless transmission unit 5a is connected to the display control circuit 5, and the inspection result is transmitted from the transmission unit to the outside by infrared or wireless. It can also be recorded in a controller (not shown) or a personal computer (not shown) of the subjective optometry apparatus 1.
(2) Re-examination based on the previous test result When the subject comes back and conducts a visual acuity test, when the examiner transmits the subject ID to the receiving device 4 of the visual target presentation device 2 by infrared rays using the remote controller 7, The display control circuit 5 starts setting a visual acuity test based on the previous test result of the subject ID.

  For example, when the eyesight visual acuity value of the subject 8 with the Landolt ring or characters is recorded in the information recording device 6 as 0.2 in the previous examination, the display control circuit 5 displays the Landolt ring corresponding to the eyesight value 0.005. And characters are displayed on the display screen 2b. Further, when the eyesight visual acuity value of the subject 8 with the Landolt ring or characters is recorded in the information recording device 6 as 0.7 in the previous examination, the display control circuit 5 displays the Landolt ring corresponding to the visual acuity value 0.5. And characters are displayed on the display screen 2b. Based on such a display, the visual acuity test by the naked eye of the subject 8 is executed in the same manner as the previous time.

  In addition, when the previous corrected visual acuity value of the subject is 0.5, the display control circuit 5 sets an inspection lens (not shown) based on the previous prescription value in the optometry window Lw of the optometry unit 1L. The Landolt ring and characters corresponding to the visual acuity value 0.3 that is two steps (predetermined step) lower than the previous corrected visual acuity value are displayed on the display screen 2b. In this state, the subject's left eye is made to visually recognize the Landolt ring and characters on the display screen 2b through the optometry window Lw, and whether or not the direction of the Landolt ring break and the characters can be recognized is the same as the naked eye vision test. To run.

  In this way, the display control circuit 5 displays the Landolt ring and characters having a visual acuity value that is two steps (predetermined) lower than the previous visual acuity value on the display screen 2b, and starts a visual acuity test similar to (1).

Even when the examination results are managed by the subjective optometry apparatus 1 or an external personal computer (not shown), the ID and the previous examination result can be input to the display control circuit 5 via the receiving apparatus 4. It is possible to perform an efficient inspection.
(3) Others In the case of the red / green test, depending on the subject, the appearance of the red-side target and the green-side target may be delicate, and it may be difficult to determine which side is easier to see. . In such a case, the examiner may take time to make an inquiry, and the examiner may make a wrong decision.

  In the case of such a red / green test, the time required for the inspection is recorded in the information recording device 6 together with the subject ID and the examiner ID.

  When the subject re-inspects the red / green test, the display control circuit 5 transmits the subject ID from the remote controller 7 to the receiving device 4 of the target presentation device 2 by infrared rays. The inspection time of the red / green test corresponding to the ID is called to determine whether or not the inspection time is longer than a predetermined time.

  Moreover, when the inspection time required for the red / green test is longer than the predetermined time, the display control circuit 5 displays a message such as “Previous inspection is taking too long. It is also possible to educate the examiner 9 by displaying on 2b and urging the examinee 8 and the examiner 9 to pay attention. Alternatively, by transmitting and managing the inspection result from the transmission unit 5a to an external personal computer (not shown), it is possible to know the inspection / unsatisfactory inspection of the examiner 9 and use it for education.

  As described above, the optometry target presenting apparatus according to the embodiment of the present invention includes the case 2a provided with the display screen 2b to be visually recognized by the subject 8. The case 2b includes a target recording means (target recording device 3) that records a number of targets to be presented to the subject 8, and a target selection device (remote control 7 or subjective optometry device 1). A receiving device 4 that receives a target selection signal from a transmission unit of a controller), and the target recording means (target recording device 3) based on the target selection signal input to the receiving device 4. In addition, display control means (display control circuit 5) for selectively displaying the multiple targets on the display screen 2b is provided. Further, the case 2a includes information recording means (information recording device 6) for recording examination information based on the visual target displayed on the display screen 2b together with the ID of the subject 8. Moreover, the display control means (display control circuit 5) reads the examination information corresponding to the subject ID from the information recording means (information recording device 6) when the subject ID is input, A retest target or message based on the read test information is displayed on the display screen 2b.

  According to this configuration, the display control means reads the test information corresponding to the subject ID from the information recording means when the subject ID is input, and the retest target based on the read test information. Or the message is displayed on the display screen, the registered visual acuity value data can be used effectively when the visual acuity is reexamined.

  In the embodiment of the present invention, the inspection information is an inspection history, an inspection result, and an inspection time.

  According to this configuration, since the time required for the reexamination of the subject can be known from the examination history, the examination result, the examination time, etc., the waiting time can be notified to the next subject. In addition, since remarks and the like can be obtained from the inspection history, inspection results, inspection time, etc., a better reinspection can be performed.

  Moreover, the optotype presenting apparatus for optometry according to the embodiment of the present invention includes a transmission unit 5a capable of outputting a subject ID and examination information.

  According to this configuration, by transmitting and managing the inspection result from the transmission unit 5a to an external personal computer (not shown), it is possible to know the inspection / unsatisfactory inspection of the examiner 9 and use it for education. it can.

  In this configuration, an infrared method is used for the reception / transmission means, but it goes without saying that the same effect can be obtained by using other methods, for example, wired or wireless communication.

It is explanatory drawing of the subjective optometry system which has the optotype target presentation apparatus for optometry based on this invention. FIG. 2 is a control circuit diagram of the optometric target presenting apparatus of FIG. 1.

Explanation of symbols

2 ... Target presentation device (liquid crystal display)
2a: Case 2b: Display screen (liquid crystal display screen)
3 ... Target recording device (target recording means)
4... Receiving device 5... Display control circuit (display control means)
6. Information recording device (information recording means)
7. Remote control (target selection device)
8 ... Subject

Claims (3)

While having a case provided with a display screen to be visually recognized by the subject,
The case includes a target recording means for recording a number of targets to be presented to the subject, a receiver for receiving a target selection signal from a transmitter of the target selector, and an input to the receiver An optotype target presenting apparatus comprising display control means for selectively displaying the multiple targets recorded in the target recording means based on the target selection signal to be displayed on the display screen,
The case includes information recording means for recording the examination information based on the target displayed on the display screen together with the ID of the subject,
The display control means reads test information corresponding to the subject ID from the information recording means when the subject ID is input, and a retest target based on the read test information, An ophthalmologic optotype presenting apparatus that displays a message on the display screen.   The optotype target presenting apparatus according to claim 1, wherein the examination information includes examination history, examination results, and examination time.   The optotype target presenting apparatus according to claim 1, further comprising a transmission unit capable of outputting a subject ID and examination information.

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