JPH02131741A - Perimeter - Google Patents

Abstract

PURPOSE:To eliminate an hourly response error caused by a person to be inspected, by bringing light emitting elements arranged on a longitude line from the center part to light emission selectively by a voice input means and a display control means. CONSTITUTION:A perimeter 1 is constituted of a face fixing part 2, a dome body 3, a visual field device 4, a base 5 combined with an arm placing part, and a sensor device 6. As for the dome body 3, its external form is formed like a curved surface, and on its surface, many light emitting elements 10 are arranged extending from the center part to the longitude line direction. As for the light emitting element 10, that which can emit a light beam electrically such as a light emission diode, etc., is used. Also, the light emitting element 10 are connected to a display control means 11, respectively, so that the light emission can be executed selectively by its display control means 11. The light emitting elements 10 can be turned on by one piece each at a constant speed toward the center from the outside peripheral direction. Moreover, to the display control means 11, a voice input means 13 is connected, and constituted so that the display control means is operated by its voice. On the surface of the base 5, the sensor device 6 is installed, and it is connected to the display control means 11, and by using the sensor device 6, the display means can be controlled.

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a perimetry K used for visual field testing in eye clinics, etc., and its purpose is to test the visual field of a subject by using a sensor. That is.

Conventional technology Field of view, more precisely, refers to the ``sensitivity distribution of the visual field,'' and generally refers to ``the range that can be seen with one eye when gazing at a single point.'' It is known that abnormal visual fields are detected due to various diseases; for example, in end-stage glaucoma, afferent stenosis is observed in which the visual field in each direction narrows to approximately the same extent from the periphery toward the center, which can lead to retinal detachment. In this case, stenosis is observed in the area corresponding to the avulsion site. Furthermore, in cases of hysteria, spiral fields may be detected. To measure these visual fields, including the diseases listed above, there are two methods: dynamic visual field, in which the target is moved from outside the visual field to the inside, and vice versa, and the recognizable border points of the target are measured; There are two types of static visual field measurement methods that measure the brightness of the recognizable boundary by changing the brightness of the visual target at the same point.

Currently, the most popular one is the Goldmann dynamic perimeter, and the 7 Elster perimeter is also widely used. This 7 Elster perimeter measures the recognition limit of a white target or a color target by moving it under indoor lighting.

Problems to be Solved by the Invention The conventional and most popular perimetry described above moves the optotype from the periphery toward the center K (or in the opposite direction), and when the subject first recognizes the optotype, (or when it disappears) The test subject is configured to press a push button. For this reason, there is a problem in that a temporal response error occurs that affects the subject, making it impossible to perform accurate measurements. You can also easily determine the position of the subject's face.
There was also the drawback that it could not be fixed. Furthermore, when using the perimeter, there is a drawback that a person such as a doctor or nurse must be present at all times to operate the perimeter.

Means for Solving the Problems This invention solves the above-mentioned problems, and includes a chin rest whose upper surface is curved to match the shape of the jaw, and a chin rest that is curved to match the shape of the forehead. A face fixing part consisting of a forehead holding part and an edge formed in a curved shape, a dome body on the surface of which a large number of light emitting elements are arranged in meridian directions K from the center, and a sound for selectively causing the light emitting elements to emit light. A viewing device incorporating a display control means connected to an input means, a base that also serves as an arm rest supporting the main body, and a display control means, a recording means, etc. installed on the surface of the base are connected. This perimeter is characterized by being constructed with a sensor device, and allows the subject to easily detect the recognition limit of the light emitting element just by touching the sensor.

Example An embodiment of the invention will be described below with reference to Drawing K.

1 is a perimeter of the present invention, and the perimeter 1 includes a face fixing part 2;
It is composed of a dome body 3, a viewing device 4 inside the main body, a base 5 which also serves as an arm rest, and a sensor device 6. Further, a lifting device 7 is used which can easily move the base 5 up and down as required.

The face fixing part 2 is composed of a chin resting part 8 and a forehead holding part 9. The face mounting section 8 is configured to be able to move up and down to accommodate differences in the size of the faces of each subject. The upper surface is curved to match the shape of the jaw. On the other hand, the forehead holding part 9 is for fixing the position of the forehead, and is configured to be vertically movable as described above, and is formed into a gently curved shape K to match the shape of the forehead. The chin rest part 8 and forehead press part 9 can be used to fix the subject's face in a predetermined position according to its size.

The dome body 3 has a curved outer shape, and a large number of light emitting elements 10 are arranged on its surface in the meridian direction from the center. As the light emitting element 10, a light emitting diode or the like capable of electrically emitting K light is used. The light emitting elements 10 are each connected to a display control means 11, and the display control means 1
1, it is possible to selectively emit light. For example, it is possible to light up the light emitting elements 10 on a certain meridian one by one at a constant speed from the center toward the outer periphery. As a result, the subject sees the light emitting position moving at a constant speed in the outer circumferential direction K from the center. Similar K1
The light emitting elements 10 can be lit one by one at a constant speed from the outer circumferential direction toward the center. Further, the display control means 11K is connected to a voice input stage 13, and the display control means 11K is configured to operate.

As the audio input means 13, a tape recorder or the like is used. Furthermore, the test subject is configured to be able to hear the sound through a loudspeaker built into a tape recorder or the like. Therefore, when the display control 1 is activated by the voice, the content of the test is transmitted to the patient.

The base 5, which also serves as an arm rest, serves not only as a stand to support the perimeter main body, but also as a stand on which the left and right arms of the K1 subject can be placed. A sensor device 6 is installed on the surface of the base 5. The sensor device 6
is connected to the display control means 11, and the sensor device 6
K. In addition to being able to control the display means, it is also possible to display the results as data or on a recording means 12K such as a display such as a CRT. It is also possible to output the image to a printer or the like. Furthermore, the sensor device 6 can be easily energized by simply touching it with a finger, and strong force is not required.

The subject gazes at the center of the dome body 3 and inputs the voice input means 1.
3. When it is confirmed that the light emission position transmitted to the light emitting element lO... via the display control means 11 moves from the center to the outer periphery, and this light emission cannot be recognized (Light emission recognition limit)
Simply touch the sensor device 6 with your finger. This one-touch operation makes it possible to detect the luminescence recognition limit point of the subject.

The lifting device 7 is a device that can easily raise and lower the base 5 which also serves as the arm rest, and is operated by an appropriate means such as hydraulic pressure.
It is possible to do this. By using this device 7, it is possible to maintain the position of the subject's face at an appropriate height even if there are individual differences. In addition, in order to make this perimeter easier to use, the K vertical column is set apart from the center to provide sufficient space for the lower limbs of the subject.

Effects The present invention configured as described above uses the voice input means and the display control means to selectively emit light from the light emitting elements arranged on the meridian from the center, and when the subject uses the sensor of the sensor device to emit light. The light emitting position at the recognition limit can be detected by simply touching it with a finger, so there is no need to use physical force, and the test subject can respond more easily. In addition, the sensor device can be operated while the arm is placed on the base, making it easy for infants and the elderly to use the device. Furthermore, since the original fixing parts such as the chin rest part and the forehead press part are formed, the position of the subject's eyes does not shift, making it possible to obtain accurate test results. In addition, the lifting device that effectively saves space for the lower limbs can be mounted on the base, making it easy to use and extremely easy to set the main unit in the appropriate position even if there are individual physical differences. I am now able to do K. Sara K
Since the display control means is activated by each voice input means, there is no need for personnel such as doctors and nurses to operate the perimeter, and this is an extremely effective means of labor saving. Now you can get it. In addition, since the above-mentioned voice input means (K) is configured so that the above-mentioned action and the same voice can be transmitted to the examinee, it is possible to easily convey the operation details to the examinee, thereby reducing the risk of danger.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the perimeter of the invention, and FIG. 2 is a block diagram thereof. In the figure, l ... 3 ... 5 ... 7 ... 9 ... 11 ... 13 ... Perimeter dome body base elevating device Forehead presser display control means Voice input means 2 ...・ 4 ・・・ 6 ・・・ 8 ・・・ 10... 12...

Claims (1)

[Claims] 1) A chin rest part 8 whose upper surface is formed into a curved shape to match the shape of the jaw, and a forehead presser part 9 whose upper surface is formed into a gently curved shape to match the shape of the forehead. a face fixing part 2 consisting of;
A dome body 3 on the surface of which a large number of light emitting elements 10 are arranged in the meridian direction from the center, a viewing device 4 having a built-in display control means 11 etc. for selectively causing the light emitting elements 10 to emit light, and the main body. It is characterized by being composed of a base 5 that also serves as an arm rest for supporting the camera, and a sensor device 6 that is connected to a display control means 11, a recording means 12, etc. installed on the surface of the base 5. Perimeter to do. 2) The perimeter according to claim 1, characterized in that a voice input means 13 is connected to the display control means 11, and the display control means 11 is operated by the voice.