JP2004229870A - Perimeter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a perimeter recording examination results as electronic data without losing the operation performance of the conventional perimeter. <P>SOLUTION: This perimeter examines a visual field by controlling a display position of a spot light to be displayed on a light receiving surface, which is formed into a recessed surface, by manually operating an index operation arm 20. A visual field scale display part 30 for displaying a visual scale pattern which is disposed in such a position as setting the moving surface in parallel to the panel surface and separating the moving surface from the panel surface, having its outer surface formed of a touch panel and disposed with the moving position of the index operation arm 20 facing to the spot position to be displayed on the light receiving surface is provided in a position of a support frame 16 disposed oppositely to the moving surface for moving the index operation arm 20. This perimeter is also provided with a control device displaying a prescribed image such as the visual field scale pattern on the visual scale display part 30, recording input data such as a marking position, codes and characters input in the touch panel as electronic data and outputting the recorded electronic data. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a perimeter, and more particularly to a perimeter capable of recording visual field measurement results as electronic data.
[0002]
[Prior art]
Perimeters are conventionally used as inspection devices that are the most standard for visual field measurement. 4 and 5 show a front view and a rear view of the perimeter. The perimeter displays spot-like indicators sequentially on the photoreceptor formed on the hemispherical concave surface, and inspects the subject's visual field depending on whether or not the indicators are visible.
[0003]
In FIG. 4, 10 is a light receiving body on which a light receiving portion formed in a hemispherical shape is formed, 12 is a chin rest placed facing the light receiving body 10, and 14 supports a projector 13 that projects spot light. It is a rotating arm. The turning arm 14 is provided so as to turn at the same radius as the concave surface of the light receiving body 10 with a vertical line passing through the center of the light receiving body 10 as the turning center, and the projector 13 is disposed on the lower side of the turning arm 14. It is provided at the same height position as the center.
[0004]
On the back side of the photoreceptor 10, as shown in FIG. 5, the linking arm 18 is movably attached in parallel to the side surface (vertical surface) of the support frame 16 erected on the support base 15. The index operation arm 20 is connected to the lower end side. The linkage arm 18 and the rotation arm 14 are linked via a link mechanism 19, and the tip arm of the index operation arm 20 is picked up and moved by a finger, whereby the rotation arm 14 is linked via the linkage arm 18 and the link mechanism 19. Is rotated to a predetermined position, and the light projection direction of the projector 13 attached to the rotation arm 14 is controlled.
[0005]
The mechanical mechanism such as the index operation arm 20 and the connecting arm 18 is configured such that when the recording paper is set on the recording paper setting portion 22 provided on the lower side surface of the support frame 16 and the knob is moved on the recording paper, It is designed so that the position of the tip of the pointer 20a provided at the tip of the knob matches the index position displayed on the concave surface of the photoreceptor 10.
Therefore, the examiner can perform the visual field inspection by moving the knob on the recording paper and checking whether or not the subject can visually recognize the index. Reference numeral 17 denotes an adjustment unit for manually adjusting the intensity and spot diameter of the spot light.
[0006]
Perimeters are widely used as standard devices for visual field measurement. However, since they are manual measurements, there are problems that the skill of the examiner greatly affects the measurement accuracy and measurement time. For this reason, a perimeter has been proposed in which the perimeter is semi-automatic, and the inspection contents are programmed while allowing manual operation while allowing efficient inspection (for example, see Patent Document 1).
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-253502
[Problems to be solved by the invention]
By the way, one of the reasons why the perimeter is frequently used as a standard perimeter is that the perimeter is a manual type, so that an accurate examination can be performed according to the condition of the subject. Depending on the symptom of the subject, it is necessary to examine a specific part of the visual field in detail, and the part where the specific symptom appears varies depending on the subject. This is because some symptoms cannot be accurately known.
[0009]
In hospitals and the like, medical examination results or examination results are stored as electronic data, and it has become necessary to store visual field measurement results as electronic data. In order to meet such a demand, a perimeter has been provided in which an inspection method can be programmed and an inspection result can be stored as electronic data.
However, since the perimeter is highly valuable as a standard perimeter, it is installed in many hospitals and is familiar with its use, so existing equipment can be used and the perimeter can be handled. There is a need to digitize inspection results without losing the above characteristics.
[0010]
Therefore, the present invention has been made to solve these problems, and the purpose of the present invention is to make it possible to easily use existing equipment as it is without impairing the operability of the existing perimeter. Thus, an object of the present invention is to provide a perimeter that can store inspection results as electronic data and has excellent handling properties.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration.
That is, in the perimeter for inspecting the visual field by controlling the display position of the spot light displayed on the light receiving surface formed in a concave shape by manually operating the index operation arm, the moving surface on which the index operation arm moves An outer surface is formed by a touch panel at a position of the support frame arranged opposite to the moving surface and the panel surface in parallel, and the moving surface and the panel surface are separated from each other. A visual field scale display unit displaying a visual field scale pattern in which a moving position and a spot position displayed on the light receiving surface correspond to each other is provided, and a required image such as the visual field scale pattern is displayed on the visual field scale display unit. The input data such as marking positions, symbols, characters, etc. displayed on the touch panel is recorded as electronic data, and the recorded electronic data is recorded. Wherein the control device for outputting data is provided.
[0012]
In addition, the visual field scale display unit can display the visual field scale pattern at the same scale as the visual field scale pattern displayed on the recording paper at the same position as the setting unit for setting the recording paper in the existing perimeter. It is provided.
Further, a camera for photographing the eye to be examined is provided on the photoreceptor, and an image of the eye to be examined photographed by the camera is provided so as to be displayed on a visual field scale display unit.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is an explanatory diagram showing the overall configuration of an embodiment of a perimeter according to the present invention. The perimeter of the present embodiment includes a light receiving body 10 having a light receiving portion formed in a hemispherical shape, a rotating arm 14 that supports a projector 13 that projects spot light, and a linkage that is rotatably supported by a support frame 16. Arm 18, a mechanical mechanism for operating a perimeter such as a link mechanism 19 for connecting the connecting arm 18 and the rotating arm 14 and an index operating arm 20 connected to the connecting arm 18; The projecting light source and optical system are configured exactly the same as a conventional perimeter.
[0014]
A characteristic configuration of the perimeter according to the present embodiment is that a visual field scale display unit 30 for electronically recording data by a touch panel method is provided at a position where the setting unit 22 for setting recording paper is provided in the conventional perimeter. It is in providing. This visual field scale display unit 30 displays the same pattern as the visual field scale pattern displayed on the recording paper used in the conventional perimeter on the screen at the same scale as the scale displayed on the recording paper. Is displayed.
[0015]
FIG. 2 shows a display pattern of the visual field scale display unit 30. As shown in the figure, the visual field scale display unit 30 displays a visual field scale pattern 32 composed of radially arranged straight lines that divide the visual field at 15 ° intervals in the radial direction and circumferential lines arranged concentrically. Has been. The visual field scale pattern 32 displayed on the visual field scale display unit 30 is obtained by aligning the pointer 20a at the tip of the knob portion of the index operation arm 20 with the scale position in the visual field scale pattern, so that the photoreceptor is located at the pointer position. The spot light is set to be projected onto the light receiving surface formed on the 10 concave surfaces. That is, mechanical mechanisms such as the linking arm 18, the link mechanism 19, and the rotating arm 14 are designed so that the position of the pointer in the visual field scale pattern 32 and the spot position displayed on the light receiving surface of the photoreceptor 10 are interlocked. The orientation of the projector 13 is controlled.
[0016]
The index operation arm 20 is provided so as to move slightly parallel to the touch panel surface, slightly spaced from the touch panel surface of the visual field scale display unit 30. At the time of visual field inspection, the index operation arm 20 is moved along the surface of the touch panel by pinching the knob portion of the index operation arm 20 with a finger, and the visual field scale display unit 30 is moved by a light pen or the like according to the response of the subject. Mark required symbols and characters on the touch panel.
[0017]
As described above, the operation for marking the touch panel surface of the visual field scale display unit 30 while moving the index operation arm 20 is exactly the same as the operation for marking the recording paper while moving the index operation arm. That is, the perimeter of the present embodiment is inspected by exactly the same operation as a conventional perimeter by making the visual field scale display unit 30 a touch panel type and enabling marking by touching the visual field scale display unit 30. Is possible.
[0018]
FIG. 3 shows a block diagram of the perimeter of the present embodiment. In the figure, reference numeral 40 denotes a device main body including the photoreceptor 10 and a link mechanism, and 30 denotes a visual field scale display unit mounted on the device main body 40. Reference numeral 34 denotes a light pen for marking on the touch panel of the visual field scale display unit 30.
A control device 42 displays a visual field scale pattern on the visual field scale display unit 30, and records and processes data input from the touch panel. 44 is a keyboard connected to the control device 42, and 46 is a mouse. A printer 48 is connected to the control device 42 so that the visual field inspection result can be printed together with the visual field scale pattern as shown on the conventional recording paper. Reference numeral 36 denotes a CCD camera attached to the apparatus main body 40. As shown in FIG. 1, the CCD camera 36 is installed at the center position of the back surface of the photoreceptor 10 and is provided to monitor whether or not the subject is fixing the center position of the light receiving surface of the photoreceptor 10. ing.
[0019]
Hereinafter, a procedure for performing visual field inspection using the perimeter of the present embodiment will be described.
First, the controller 42 is turned on, and the visual field scale pattern 32 is displayed on the visual field scale display unit 30 as shown in FIG. In the drawing, reference numeral 36 a denotes a display window for confirming fixation of the subject displayed on the visual field scale display unit 30. An image of the eye of the subject by the CCD camera 36 is displayed on the display window 36a, and the examiner can monitor the fixation state of the subject by the image of the display window 36a. In the conventional perimeter, an observation mirror for fixation fixation is arranged at the center of the photoreceptor 10, and the examiner checks the fixation by looking through the observation mirror as needed. According to the present embodiment, the fixation of the subject can be confirmed more easily than before, and there is an advantage that a reliable visual field inspection can be performed.
[0020]
The subject places his chin on the chin rest 12. The height and the left-right position of the chin rest 12 are adjusted so that the subject eye of the right eye or the left eye is at the center position of the photoreceptor 10.
In the visual field inspection by the perimeter, the spot light is moved from the outside of the light receiving surface in the central direction (on a straight line along the radial direction), and the examiner uses the visual field display scale to determine the position where the subject can visually recognize the spot light. The marking operation is the basic operation. As an inspection method, first, the tip of the index operation arm 20 is moved on the radial line at intervals of 45 ° to inspect each radial line, and then the radial line deviated by 15 ° is inspected at intervals of 45 °. Next, the diameter line further deviated by 15 ° is inspected at 45 ° intervals. Thereby, each diameter line of the visual field display scale can be inspected. In addition, the speed which moves spot light on a radial line is about 5 degrees in 1 second.
[0021]
The subject informs the examiner that he / she can visually recognize the spot light with a hand switch or voice when the spot light is seen.
The examiner confirms the visual recognition position, and marks the visual recognition position on the touch panel surface of the visual field scale display unit 30 with a light pen. When marking, it is also possible to record by changing the display symbol such as ○ or × depending on the inspection content. Moreover, it is also possible to write and record characters on the touch panel of the visual field scale display unit 30 as in the case of writing a memo on the recording paper.
[0022]
Note that the shape, material, and the like of the light pen are not particularly limited as long as symbols and the like can be accurately input from the touch panel of the visual field scale display unit 30. In normal operation, hold the light pen separately from the index operation arm 20, and when the spot light is visually recognized while moving the index operation arm 20, marking with the light pen according to the tip position of the index operation arm 20 at that time To do. It is also possible to attach a marking member to the tip of the index operation arm 20 and knock the marking member at the position where the spot light is visually recognized to mark the touch panel.
In the visual field scale display unit 30, by marking on the touch panel, the marking is displayed on the screen so that the examiner can confirm the marking content.
[0023]
In the control device 42, the coordinate position data is recorded by the marking operation on the visual field scale display unit 30. In the visual field inspection, the isopter is written after the marking to display the inspection result. Therefore, the isopter may be written on the touch panel of the visual field scale display unit 30 by hand with a light pen or the like even when writing the isopter. The controller 42 also records the isopter data as coordinate data.
Note that a keyboard 44, a mouse 46, and the like can be used as appropriate for screen operation or data input.
[0024]
According to the perimeter of the present embodiment, as described above, the visual field scale display unit 30 is a touch panel system, and the inspection result is input from the touch panel. The inspection result can be easily printed and output, and the inspection result can be easily stored and recorded as electronic data.
[0025]
In addition, the perimeter of the present embodiment is that the visual field scale display unit 30 is arranged by the touch panel method on the set unit for setting the recording paper without changing the operation system of the conventional manual type perimeter. Features. Therefore, the perimeter of this embodiment does not impair the operability of the conventional perimeter at all. As a result, it becomes possible for a person who is familiar with the operation of the perimeter to easily and suitably use it.
[0026]
In addition, an existing perimeter in a hospital or the like can be converted into a device capable of recording test results as electronic data by simply replacing the visual field scale display unit 30 with the set unit. The operation to change to the visual field scale display unit 30 can be easily converted into a device capable of being digitized because it can be performed only by attaching the control device 42 and the like without changing the operation system of the perimeter. There is an advantage.
[0027]
【The invention's effect】
According to the perimeter of the present invention, as described above, the inspection result can be recorded as electronic data without impairing the operability of the conventional perimeter. In addition, there is a remarkable effect that it can be provided as a perimeter with excellent reliability and operability.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a configuration of an embodiment of a perimeter according to the present invention.
FIG. 2 is an explanatory diagram illustrating a display example of a visual field scale display unit.
FIG. 3 is a block diagram of a perimeter.
FIG. 4 is a front view of a conventional perimeter.
FIG. 5 is a rear view of a conventional perimeter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Photoreceptor 12 Jaw stand 13 Projector 14 Rotating arm 15 Support stand 16 Support frame 18 Linking arm 19 Link mechanism 20 Index operation arm 20a Pointer 22 Set part 30 Field scale display part 32 Field scale pattern 36 CCD camera 36a Display window 40 Device body 42 Control device 44 Keyboard 46 Mouse 48 Printer

Claims (3)

In a perimeter that inspects the visual field by manually operating the index operation arm and controlling the display position of the spot light displayed on the light receiving surface formed in a concave shape,
An outer surface is disposed at a position of a support frame disposed opposite to the moving surface on which the index operation arm moves, in an arrangement in which the moving surface and the panel surface are parallel and the moving surface and the panel surface are separated from each other. A visual field scale display unit is provided which is formed by a touch panel and displays a visual field scale pattern in which the movement position of the index operation arm and the spot position displayed on the light receiving surface correspond to each other.
Display a required image such as the visual field scale pattern on the visual field scale display unit, record input data such as a marking position, a symbol, and a character input to the touch panel as electronic data, and output the recorded electronic data A perimeter characterized in that a control device is provided. The visual field scale display unit is provided at the same position as the set unit for setting recording paper in an existing perimeter so that the visual field scale pattern can be displayed at the same scale as the visual field scale pattern displayed on the recording paper. The perimeter according to claim 1, wherein The perimeter according to claim 1 or 2, wherein a camera for photographing the eye to be examined is provided on the photoreceptor, and an image of the eye to be examined photographed by the camera is provided so as to be displayed on a visual field scale display unit. .

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