JP6836119B2 - Visual function test device and program for visual function test - Google Patents

Visual function test device and program for visual function test Download PDF

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JP6836119B2
JP6836119B2 JP2016155542A JP2016155542A JP6836119B2 JP 6836119 B2 JP6836119 B2 JP 6836119B2 JP 2016155542 A JP2016155542 A JP 2016155542A JP 2016155542 A JP2016155542 A JP 2016155542A JP 6836119 B2 JP6836119 B2 JP 6836119B2
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利哉 小林
利哉 小林
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Nidek Co Ltd
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本開示は、被検者眼の視野異常の有無を検査する視機能検査装置および視機能検査用プログラムに関するものである。 The present disclosure relates to a visual function test device and a visual function test program for inspecting the presence or absence of visual field abnormality in the subject's eye.

特許文献１には、視野計による視野検査で疾患が確認された被検者を対象にした眼科装置が開示されており、この眼科装置は、疾患が確認された被検者が残された視機能を利用して物を見る訓練を行うことができる機能を備えている。 Patent Document 1 discloses an ophthalmologic device for a subject whose disease has been confirmed by a visual field test using a visual field meter, and this ophthalmic device is a visual field in which a subject whose disease has been confirmed remains. It has a function that allows you to use the function to train to see things.

特開２０１１−２５５０４５号公報Japanese Unexamined Patent Publication No. 2011-255045

視野計による視野検査においては、緑内障などの疾患の早期発見を促進させるために、短時間で視野異常が存在するか否かの検査を行えるようにして、定期健診等の日常的な検査の中で容易に検査できるようにすることが望まれる。 In the visual field test using a perimeter, in order to promote the early detection of diseases such as glaucoma, it is possible to perform a test for the presence of visual field abnormalities in a short time, and routine tests such as regular medical examinations are performed. It is desirable to be able to easily inspect inside.

そこで、本開示は上記した問題点を解決するためになされたものであり、短時間で視野異常が存在するか否かの検査を行うことができる視機能検査装置および視機能検査用プログラムを提供することを目的とする。 Therefore, the present disclosure has been made to solve the above-mentioned problems, and provides a visual function test device and a visual function test program capable of inspecting whether or not a visual field abnormality exists in a short time. The purpose is to do.

本開示における典型的な実施形態が提供する視機能検査装置は、被検者眼の視野異常の有無を検査する視機能検査装置であって、前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、前記右眼用画像と前記左眼用画像は、同一画像であること、を特徴とする。
また、本開示における他の実施形態が提供する視機能検査装置は、被検者眼の視野異常の有無を検査する視機能検査装置であって、前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、前記右眼用画像と前記左眼用画像は、立体画像を生成するために互いに視差を有する画像であり、前記同時呈示制御を行ったときに、前記被検者に、前記融像画像として、全体に亘って立体感を覚える立体画像を自覚させ、前記交互呈示制御を行う際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、を特徴とする。
また、本開示における他の実施形態が提供する視機能検査装置は、被検者眼の視野異常の有無を検査する視機能検査装置であって、前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、前記右眼用画像と前記左眼用画像は、形状同一で色の異なる画像であり、前記同時呈示制御を行ったときに、前記被検者に、前記融像画像として、全体に亘って２つの色を混ぜたような色、あるいは、２つの色とは異なる無彩色の模様の画像を自覚させ、前記交互呈示制御を行う際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、を特徴とする。 The visual function test device provided by the typical embodiment in the present disclosure is a visual function test device that inspects the presence or absence of visual field abnormality in the subject's eye, and is for projecting onto the right eye of the subject's eye. An image or moving image for the right eye containing a fixation target, and an image for projecting onto the left eye of the subject's eye, or a moving image for the left eye containing a fixation target. The presenting section for presenting the image, the simultaneous presentation control for simultaneously presenting the right eye image and the left eye image at the presenting section, and the right eye image and the left eye at the presenting section. It has an image presentation control unit that alternately presents the images for the right eye and an image presentation control unit that performs the alternate presentation control, and the image presentation control unit fuses the image for the right eye and the image for the left eye to the subject. The simultaneous presentation control is performed in order to make the imaged fusion image aware, and the right eye image and the left eye image are alternately presented at the fusion image and the presentation portion, whereby the test is performed. who have rows the alternating presentation control to inspect the presence or absence of different parts of the appearance of the subjective image, the image presentation control unit repeats a plurality of times a process of performing the alternate presentation control with the simultaneous presentation control The right eye image and the left eye image are the same image .
Further, the visual function test device provided by another embodiment in the present disclosure is a visual function test device for inspecting the presence or absence of visual field abnormality in the subject's eye, and is for projecting onto the right eye of the subject's eye. Image or moving image for the right eye containing the fixation target, and an image for projecting onto the left eye of the subject's eye, or moving image of the left eye containing the fixation target. Simultaneous presentation control for simultaneously presenting the right eye image and the left eye image at the presentation unit, and the right eye image and the left at the presentation unit. It has an image presentation control unit that alternately presents eye images and an image presentation control unit that performs the alternate presentation control, and the image presentation control unit gives the subject an image for the right eye and an image for the left eye. The simultaneous presentation control is performed in order to make the fused fusion image aware, and the fusion image and the presentation portion alternately present the right eye image and the left eye image, whereby the subject is covered. The alternate presentation control is performed in order to inspect the presence or absence of a portion that looks different from the image that the examiner is aware of, and the image presentation control unit repeats the process of performing the simultaneous presentation control and the alternate presentation control a plurality of times. The image for the right eye and the image for the left eye are images having a difference in distance from each other in order to generate a stereoscopic image, and when the simultaneous presentation control is performed, the fusion is performed on the subject. When the alternate presentation control is performed by recognizing a stereoscopic image that gives a stereoscopic effect throughout the image, the switching frequency indicating the speed at which the right eye image and the left eye image are switched is set to the subject. The presenter is characterized in that the switching between the right eye image and the left eye image is set to a frequency at which it is difficult for the examiner to notice, and the right eye image and the left eye image are alternately presented.
Further, the visual function test device provided by another embodiment in the present disclosure is a visual function test device for inspecting the presence or absence of visual field abnormality in the subject's eye, and is for projecting onto the right eye of the subject's eye. Image or moving image for the right eye containing the fixation target, and an image for projecting onto the left eye of the subject's eye, or a moving image of the left eye containing the fixation target. Simultaneous presentation control for simultaneously presenting the image for the right eye and the image for the left eye at the presentation unit, and the image for the right eye and the image for the left at the presentation unit. It has an image presentation control unit that alternately presents an eye image and an image presentation control unit that performs the alternate presentation control, and the image presentation control unit gives a subject an image for the right eye and an image for the left eye. The simultaneous presentation control is performed in order to make the fused fusion image aware, and the right eye image and the left eye image are alternately presented by the fusion image and the presentation unit, thereby causing the subject to be covered. The alternate presentation control is performed in order to inspect the presence or absence of a portion that looks different from the image that the examiner is aware of, and the image presentation control unit repeats the process of performing the simultaneous presentation control and the alternate presentation control a plurality of times. The image for the right eye and the image for the left eye are images having the same shape but different colors, and when the simultaneous presentation control is performed, the subject is presented with the fusion image as a whole. When making an image of a mixture of two colors or an achromatic pattern different from the two colors and performing the alternate presentation control, the image for the right eye and the image for the left eye are used. The switching frequency, which represents the speed at which the images are switched, is set to a frequency at which the subject is less likely to notice the switching between the right eye image and the left eye image, and the right eye image and the left eye image are set. It is characterized by being presented alternately.

本開示における典型的な実施形態が提供する視機能検査用プログラムは、被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、前記右眼用画像と前記左眼用画像は、同一画像であること、を特徴とする。
また、本開示における他の実施形態が提供する視機能検査用プログラムは、被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、前記右眼用画像と前記左眼用画像は、立体画像を生成するために互いに視差を有する画像であり、前記同時呈示処理を前記プロセッサに実行させたときに、前記被検者に、前記融像画像として、全体に亘って立体感を覚える立体画像を自覚させ、前記交互呈示処理を前記プロセッサに実行させる際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、を特徴とする。
また、本開示における他の実施形態が提供する視機能検査用プログラムは、被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、前記右眼用画像と前記左眼用画像は、形状同一で色の異なる画像であり、前記同時呈示処理を前記プロセッサに実行させたときに、前記被検者に、前記融像画像として、全体に亘って２つの色を混ぜたような色、あるいは、２つの色とは異なる無彩色の模様の画像を自覚させ、前記交互呈示処理を前記プロセッサに実行させる際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、を特徴とする。 The visual function test program provided by the typical embodiment in the present disclosure is a visual function test program for inspecting the presence or absence of visual field abnormality in the subject's eye, and is right of the subject's eye at the presentation portion. An image for projection on the eye or a moving image for the right eye including a fixation target, and an image for projection on the left eye of the subject's eye or a moving image and a fixation target. The processor is made to execute a simultaneous presentation process of simultaneously presenting the left eye image including the above, and an alternate presentation process of alternately presenting the right eye image and the left eye image at the presentation unit. In order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, the processor is made to execute the simultaneous presentation process, and the fusion image and the presentation are presented. The alternate presentation process is performed in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of by alternately presenting the image for the right eye and the image for the left eye. It is characterized in that the processor is made to execute the simultaneous presentation process and the alternate presentation process is repeated a plurality of times to cause the processor to execute the simultaneous presentation process and the left eye image are the same image.
Further, the visual function test program provided by another embodiment in the present disclosure is a visual function test program for inspecting the presence or absence of visual field abnormality in the subject's eye, and the presenting portion of the subject's eye. An image for projecting to the right eye, or a moving image for the right eye including a fixation target, and an image for projecting to the left eye of the subject's eye, or a moving image for fixation. The processor is made to execute a simultaneous presentation process of simultaneously presenting the left eye image including the mark and an alternate presentation process of alternately presenting the right eye image and the left eye image at the presentation unit. In order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, the processor is made to execute the simultaneous presentation process, and the fusion image and the left eye image are described. By alternately presenting the image for the right eye and the image for the left eye at the presentation unit, the alternate presentation process is performed in order to inspect the presence or absence of a portion of the appearance different from the image that the subject is aware of. The processor is made to execute the simultaneous presentation process and the alternate presentation process is repeated a plurality of times, and the right eye image and the left eye image have a difference in distance from each other in order to generate a stereoscopic image. It is an image, and when the processor is made to execute the simultaneous presentation process, the subject is made aware of a stereoscopic image that gives a stereoscopic effect throughout as the fusion image, and the alternate presentation process is performed. When the processor is made to execute, the subject is aware of the switching frequency indicating the speed at which the image for the right eye and the image for the left eye are switched, and the subject is aware of the switching between the image for the right eye and the image for the left eye. It is characterized in that the image for the right eye and the image for the left eye are alternately presented at a difficult frequency.
Further, the visual function test program provided by another embodiment in the present disclosure is a visual function test program for inspecting the presence or absence of visual field abnormality in the subject's eye, and the presenting portion of the subject's eye. An image for projecting to the right eye, or a moving image for the right eye including a fixation target, and an image for projecting to the left eye of the subject's eye, or a moving image for fixation. The processor is made to execute a simultaneous presentation process of simultaneously presenting the left eye image including the mark and an alternate presentation process of alternately presenting the right eye image and the left eye image at the presentation unit. In order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, the processor is made to execute the simultaneous presentation process, and the fusion image and the left eye image are described. By alternately presenting the image for the right eye and the image for the left eye at the presentation unit, the alternate presentation process is performed in order to inspect the presence or absence of a portion of the appearance different from the image that the subject is aware of. The processor is made to execute the simultaneous presentation process and the alternate presentation process is repeated a plurality of times, and the right eye image and the left eye image are images having the same shape but different colors. When the simultaneous presentation process is executed by the processor, the subject is given a color as if the two colors are mixed throughout as the fusion image, or an achromatic color different from the two colors. When the processor is made aware of the image of the pattern and causes the processor to execute the alternate presentation process, the subject sets a switching frequency indicating the speed at which the image for the right eye and the image for the left eye are switched by the subject. The feature is that the switching between the image for the right eye and the image for the left eye is set to a frequency at which it is difficult to notice, and the image for the right eye and the image for the left eye are alternately presented.

本開示の視機能検査装置および視機能検査用プログラムによれば、短時間で視野異常が存在するか否かの検査を行うことができる。 According to the visual function test apparatus and the visual function test program of the present disclosure, it is possible to inspect whether or not a visual field abnormality is present in a short time.

視機能検査装置の概略構成図である。It is a schematic block diagram of a visual function inspection apparatus. 右眼用画像と左眼用画像が同一画像である場合の画像例を示す図である。It is a figure which shows the image example when the right eye image and the left eye image are the same image. 図２の画像について交互呈示制御を行うことにより被検者が自覚する画像の一例を示す図である。It is a figure which shows an example of the image which a subject becomes aware by performing alternate presentation control about the image of FIG. 右眼用画像と左眼用画像が立体画像を生成するために互いに視差を有する画像である場合の画像例を示す図である。It is a figure which shows the image example in the case where the right-eye image and the left-eye image are images having parallax with each other in order to generate a stereoscopic image. 右眼用画像と左眼用画像が形状同一で色の異なる画像である場合の画像例を示す図である。It is a figure which shows the image example in the case where the right-eye image and the left-eye image are images having the same shape but different colors.

本開示の典型的な実施形態を図面に基づいて説明する。本実施形態の視機能検査装置１は、被検者眼の視野異常の有無を検査する装置である。この視機能検査装置１は、図１に示すように、筐体部１１と、呈示部１２と、光学系１３と、制御部１４などを有している。 A typical embodiment of the present disclosure will be described with reference to the drawings. The visual function test device 1 of the present embodiment is a device that inspects the presence or absence of visual field abnormality in the eyes of the subject. As shown in FIG. 1, the visual function inspection device 1 includes a housing portion 11, a presentation portion 12, an optical system 13, a control unit 14, and the like.

筐体部１１の内部には、呈示部１２と光学系１３などが設けられている。筐体部１１は、様々な態様が考えられ、例えば、ヘッドマウント型やゴーグル型などの被検者に装着可能な態様に形成されていることが考えられる。これにより、例えば被検者が病院の待合室等で診察を待つ間に、被検者が座ったまま検査することが可能となる。また、筐体部１１は、病院の待合室等に設置するような据え置き型の態様に形成されていてもよい。これにより、検者の手を煩わせることなく、被検者自身で検査することが可能となる。 A presentation portion 12, an optical system 13, and the like are provided inside the housing portion 11. Various modes are conceivable, and it is conceivable that the housing portion 11 is formed in a form that can be worn by a subject, such as a head mount type or goggles type. As a result, for example, while the subject waits for a medical examination in a waiting room of a hospital or the like, the subject can perform an examination while sitting. Further, the housing portion 11 may be formed in a stationary mode such that it is installed in a waiting room of a hospital or the like. As a result, the subject can perform the inspection by himself / herself without bothering the examiner.

呈示部１２は、画像の呈示（表示）を行うディスプレイであり、被検者が筐体部１１の内部を覗き込んだときに被検者眼の前方に配置され、被検者眼に対して画像を投影する。呈示部１２は、例えば、液晶ディスプレイ（ＬＣＤ）により構成されている。 The presentation unit 12 is a display for presenting (displaying) an image, and is arranged in front of the subject's eye when the subject looks into the inside of the housing portion 11, and is arranged with respect to the subject's eye. Project the image. The presentation unit 12 is composed of, for example, a liquid crystal display (LCD).

本実施形態では、呈示部１２は、右眼用呈示部１２Ｒと左眼用呈示部１２Ｌを備えている。そして、右眼用呈示部１２Ｒは被検者眼の右眼に対して右眼用画像を投影し、左眼用呈示部１２Ｌは被検者眼の左眼に対して左眼用画像を投影する。このようにして、呈示部１２は、被検者の両眼に対して個別に独立した画像（刺激画像）を投影することができる。 In the present embodiment, the presentation unit 12 includes a presentation unit 12R for the right eye and a presentation unit 12L for the left eye. Then, the presentation unit 12R for the right eye projects an image for the right eye on the right eye of the subject's eye, and the presentation unit 12L for the left eye projects an image for the left eye on the left eye of the subject's eye. To do. In this way, the presentation unit 12 can individually project an independent image (stimulation image) to both eyes of the subject.

光学系１３は、筐体部１１にて被検者が覗き込む部分と呈示部１２との間に設けられている。本実施形態では、光学系１３は、右眼用光学系１３Ｒと左眼用光学系１３Ｌとを備えている。右眼用光学系１３Ｒと左眼用光学系１３Ｌは、各々、例えば、接眼レンズ、対物レンズ、ミラー等の光学要素を組み合わせて構成されている。なお、本実施形態では、光学系１３を調整することにより、右眼用画像と左眼用画像を、各々、被検者眼の視野角（画角）の４５°以上の範囲に亘って投影させるようにする。ここで、被検者眼の視野角とは、被検者眼が正面を見る際の基準軸を中心にして被検者が見ることができる範囲を示す角度である。 The optical system 13 is provided between the portion of the housing portion 11 that the subject looks into and the presentation portion 12. In the present embodiment, the optical system 13 includes an optical system 13R for the right eye and an optical system 13L for the left eye. The right-eye optical system 13R and the left-eye optical system 13L are each configured by combining optical elements such as an eyepiece, an objective lens, and a mirror. In the present embodiment, by adjusting the optical system 13, the image for the right eye and the image for the left eye are projected over a range of 45 ° or more of the viewing angle (angle of view) of the subject's eye, respectively. Let me do it. Here, the viewing angle of the subject's eye is an angle indicating a range that the subject can see around the reference axis when the subject's eye looks at the front.

制御部１４は、所定のプログラムで指示された情報処理を行う機能を有し、視機能検査装置１の全体の制御を司る。制御部１４は、具体的には、ＣＰＵ、ＨＤＤ、ＲＯＭ、ＲＡＭ、外部インタフェース（Ｉ／Ｆ）等の組み合わせによって構成されている。この制御部１４は、図１に示す例では筐体部１１の外部に設けられているが、筐体部１１の内部に設けられていてもよい。 The control unit 14 has a function of performing information processing instructed by a predetermined program, and controls the entire visual function inspection device 1. Specifically, the control unit 14 is composed of a combination of a CPU, an HDD, a ROM, a RAM, an external interface (I / F), and the like. Although the control unit 14 is provided outside the housing portion 11 in the example shown in FIG. 1, it may be provided inside the housing portion 11.

制御部１４は、通信部２１と、画像呈示制御部２２などを備えている。通信部２１は、筐体部１１内の呈示部１２との間の通信を行う。例えば、通信部２１は、後述する画像呈示制御部２２が指示した画像のデータを呈示部１２へ送る。 The control unit 14 includes a communication unit 21, an image presentation control unit 22, and the like. The communication unit 21 communicates with the presentation unit 12 in the housing unit 11. For example, the communication unit 21 sends image data instructed by the image presentation control unit 22, which will be described later, to the presentation unit 12.

画像呈示制御部２２は、呈示部１２における画像の呈示を制御する。画像呈示制御部２２は、液晶シャッタまたは呈示部１２に備わるメカニカルシャッタ（不図示）を制御することにより、右眼用呈示部１２Ｒと左眼用呈示部１２Ｌにおいて画像の呈示のオンとオフを切り替える。そして、これにより、画像呈示制御部２２は、右眼用呈示部１２Ｒと左眼用呈示部１２Ｌに各々右眼用画像と左眼用画像とを同時に呈示させたり、右眼用呈示部１２Ｒのみに右眼用画像を呈示させたり、左眼用呈示部１２Ｌのみに左眼用画像を呈示させたりすることができる。 The image presentation control unit 22 controls the presentation of the image in the presentation unit 12. The image presentation control unit 22 switches on / off of image presentation in the right eye presentation unit 12R and the left eye presentation unit 12L by controlling the liquid crystal shutter or the mechanical shutter (not shown) provided in the presentation unit 12. .. As a result, the image presentation control unit 22 causes the right eye presentation unit 12R and the left eye presentation unit 12L to simultaneously present the right eye image and the left eye image, respectively, or only the right eye presentation unit 12R. The image for the right eye can be presented to the left eye, or the image for the left eye can be presented only to the left eye presentation portion 12L.

なお、図１に示す視機能検査装置１は、両眼で１つの筐体部１１の内部を覗き込む双眼覗き込み型の装置であるが、これに限定されず、右眼と左眼で各々、別の筐体部の内部を覗き込む双眼分離型の装置であってもよい。 The visual function test device 1 shown in FIG. 1 is a binocular peeping-type device that looks into the inside of one housing portion 11 with both eyes, but is not limited to this, and is not limited to this, and is not limited to this. , It may be a binocular separation type device that looks into the inside of another housing portion.

以上のような構成の視機能検査装置１は、画像呈示制御部２２により呈示部１２にて右眼用画像と左眼用画像とを同時に呈示させる同時呈示制御を行うことができる。すなわち、画像呈示制御部２２により、右眼用呈示部１２Ｒにて右眼用画像を、左眼用呈示部１２Ｌにて左眼用画像を、同時に呈示させることができる。これにより、右眼用呈示部１２Ｒにて呈示された右眼用画像が右眼用光学系１３Ｒを介して被検者の右眼ＥＲに投影されると同時に、左眼用呈示部１２Ｌにて呈示された左眼用画像が左眼用光学系１３Ｌを介して被検者の左眼ＥＬに投影される。 The visual function test device 1 having the above configuration can perform simultaneous presentation control in which the image presentation control unit 22 simultaneously presents the right eye image and the left eye image on the presentation unit 12. That is, the image presentation control unit 22 can simultaneously present the image for the right eye on the presentation unit 12R for the right eye and the image for the left eye on the presentation unit 12L for the left eye. As a result, the image for the right eye presented by the presentation unit 12R for the right eye is projected onto the right eye ER of the subject via the optical system 13R for the right eye, and at the same time, the image for the left eye is projected on the presentation unit 12L for the left eye. The presented left eye image is projected onto the subject's left eye EL via the left eye optical system 13L.

また、視機能検査装置１は、画像呈示制御部２２により呈示部１２にて右眼用画像と左眼用画像とを交互に呈示させる交互呈示制御を行うことができる。すなわち、画像呈示制御部２２により、右眼用呈示部１２Ｒにて右眼用画像を、左眼用呈示部１２Ｌにて左眼用画像を、交互に呈示させることができる。これにより、右眼用呈示部１２Ｒにて呈示された右眼用画像が右眼用光学系１３Ｒを介して被検者の右眼ＥＲに投影されることと、左眼用呈示部１２Ｌにて呈示された左眼用画像が左眼用光学系１３Ｌを介して被検者の左眼ＥＬに投影されることとが交互に行われる。 In addition, the visual function test device 1 can perform alternate presentation control in which the image presentation control unit 22 alternately presents the right eye image and the left eye image on the presentation unit 12. That is, the image presentation control unit 22 can alternately present the image for the right eye on the presentation unit 12R for the right eye and the image for the left eye on the presentation unit 12L for the left eye. As a result, the image for the right eye presented by the presentation portion 12R for the right eye is projected onto the right eye ER of the subject via the optical system 13R for the right eye, and the presentation portion 12L for the left eye. The presented left-eye image is alternately projected onto the subject's left-eye EL via the left-eye optical system 13L.

ここで、緑内障は、一方の眼にその症状が発生する片眼性のものや、または、両方の眼にその症状が発生する両眼性のものであっても右眼と左眼で発症する箇所が異なるものがある。そうすると、緑内障の疾患を持つ患者は、例えば、一方の眼に緑内障の発症による視野異常（例えば、緑内障の発症に伴って生じる暗点や感度低下による視野欠損）が存在しているとしても、他方の眼の視覚情報により脳内で充填されるため、一方の眼における視野異常の存在を自覚し難い。そのため、視野異常の存在を自覚しないまま緑内障が進行してしまうおそれがある。そこで、緑内障は主に加齢と共に発症する疾患であるため、企業健診や生活習慣病健診などの定期的に行われる集団健診（以下、「定期健診」という。）において定期的に視機能検査を行って緑内障の早期発見を促進させることが望まれる。 Here, glaucoma develops in the right eye and the left eye even if it is unilateral in which the symptom occurs in one eye or binocular in which the symptom occurs in both eyes. Some parts are different. Then, in a patient with glaucoma disease, for example, even if one eye has a visual field abnormality due to the onset of glaucoma (for example, a dark spot caused by the onset of glaucoma or a visual field defect due to a decrease in sensitivity), the other eye. Since it is filled in the brain by the visual information of one eye, it is difficult to notice the existence of visual field abnormality in one eye. Therefore, glaucoma may progress without being aware of the existence of visual field abnormalities. Therefore, since glaucoma is a disease that develops mainly with aging, it is regularly performed in group medical examinations (hereinafter referred to as "regular medical examinations") such as corporate medical examinations and lifestyle-related disease medical examinations. It is desirable to perform a visual function test to promote early detection of glaucoma.

しかしながら、従来技術における視機能検査装置（例えば、ハンフリー視野計）は、基本的に片眼検査で行われ、被検者が固視標を固視し続けながら投影された刺激点が視野のどこかで視認できた時に応答ボタンを押すことにより、刺激点の投影条件と被検者の応答の結果をもとに各種統計的処理を施すことで被検眼の緑内障の発症の有無等を検査する。このように、従来技術における視機能検査装置は、基本的に片眼検査で行われ、かつ、精密な検査を行うものであるため、検査時間が長くなり、また、装置構成が複雑で製造コストが高いため高価になり易い。さらに、被検者に対して自覚に基づくやや難しい応答を要求する検査となるため、検査結果は被検者の年齢や学習性によって変動し易い。そのため、１回の健診だけでは診断が困難になり易い。このようなことから、従来技術における視機能検査装置は、定期健診において視機能検査を行うような使用態様に対応しているとは言えない。 However, the visual function test device (for example, Humphrey perimeter) in the prior art is basically performed by one-eye examination, and the projected stimulus point is in the visual field while the subject keeps staring at the fixation target. By pressing the response button when it can be visually recognized, various statistical processes are performed based on the projection conditions of the stimulus point and the result of the response of the subject, and the presence or absence of glaucoma in the subject's eye is inspected. .. As described above, since the visual function inspection device in the prior art is basically performed by one-eye examination and also performs a precise examination, the examination time is long, the device configuration is complicated, and the manufacturing cost is high. Is expensive, so it tends to be expensive. Furthermore, since the test requires the subject to respond somewhat difficult based on awareness, the test result is likely to fluctuate depending on the subject's age and learnability. Therefore, it tends to be difficult to make a diagnosis with only one medical examination. For these reasons, it cannot be said that the visual function test device in the prior art corresponds to a usage mode in which a visual function test is performed in a regular medical examination.

これに対して、本実施形態の視機能検査装置１では、このような従来技術における視機能検査装置の課題を解決でき、定期健診において視機能検査を行うような使用態様に対応させることができる。そこで、本実施形態の視機能検査装置１を用いた視機能検査の実施例を説明する。 On the other hand, the visual function test device 1 of the present embodiment can solve the problem of the visual function test device in the prior art, and can be adapted to a usage mode such as performing a visual function test in a regular medical examination. it can. Therefore, an example of the visual function test using the visual function test device 1 of the present embodiment will be described.

まず、検査前の準備として、被検者は、筐体部１１の内部を覗き込み、両眼で光学系１３を通して呈示部１２を見る。具体的には、被検者は、右眼により右眼用光学系１３Ｒを通して右眼用呈示部１２Ｒを見て、左眼により左眼用光学系１３Ｌを通して左眼用呈示部１２Ｌを見る。 First, as a preparation before the examination, the subject looks into the inside of the housing portion 11 and looks at the presentation portion 12 through the optical system 13 with both eyes. Specifically, the subject sees the right eye presentation portion 12R through the right eye optical system 13R with the right eye, and sees the left eye presentation portion 12L through the left eye optical system 13L with the left eye.

そして、画像呈示制御部２２は、呈示部１２にて右眼用画像と左眼用画像とを同時に呈示させる同時呈示制御を行う。すなわち、画像呈示制御部２２は、右眼用呈示部１２Ｒにおいて右眼用画像を、左眼用呈示部１２Ｌにおいて左眼用画像を、同時に呈示させる。 Then, the image presentation control unit 22 performs simultaneous presentation control in which the right eye image and the left eye image are simultaneously presented by the presentation unit 12. That is, the image presentation control unit 22 simultaneously presents the image for the right eye on the presentation unit 12R for the right eye and the image for the left eye on the presentation unit 12L for the left eye.

ここで、右眼用画像と左眼用画像は、例えば、図２に示すような同一画像とする。図２示す例において、右眼用画像と左眼用画像は、幾何学模様のテクスチャとして、例えば格子チャートの画像としている。なお、右眼用画像と左眼用画像は、これに限定されず、例えば、同心円パターンが表された画像や放射線チャートの画像であってもよく、また、風景画像や文字列が表示された画像であってもよい。 Here, the image for the right eye and the image for the left eye are, for example, the same image as shown in FIG. In the example shown in FIG. 2, the image for the right eye and the image for the left eye are used as a texture of a geometric pattern, for example, an image of a grid chart. The image for the right eye and the image for the left eye are not limited to this, and may be, for example, an image showing a concentric circle pattern or an image of a radiation chart, and a landscape image or a character string is displayed. It may be an image.

そして、図２に示すように、右眼用画像と左眼用画像の中心には、固視標Ｍが配置されている。そこで、被検者は、右眼用画像における固視標Ｍを右眼で固視し、左眼用画像における固視標Ｍを左眼で固視する。 Then, as shown in FIG. 2, the fixation target M is arranged at the center of the right eye image and the left eye image. Therefore, the subject fixes the fixation target M in the image for the right eye with the right eye, and fixes the fixation target M in the image for the left eye with the left eye.

そして、このようにして検査の準備を行った後、検者は被検者に対して「検査中は固視標Ｍの固視を続けて、その間に呈示される固視標Ｍの周辺画像に対してできるだけ視線を動かさないこと、及び検査中に固視標Ｍの周辺含む全視野の中に他の場所と見え方が異なるような違和感を覚えた場合にはその場所を大凡でいいので記憶すること」と、説明する。 Then, after preparing for the examination in this way, the examiner tells the subject, "During the examination, the fixation target M is continuously fixed, and the peripheral image of the fixation target M presented during the examination is continued. If you do not move your line of sight as much as possible, and if you feel a sense of discomfort in the entire visual field including the periphery of the fixation target M during the examination, the appearance may be different from other places. Remember, "explains.

なお、検査を開始する前に、事前に、呈示部１２に呈示する画像の一部を意図的に欠損させたトレーニング画像を被検者に見せておき、被検者に対して視野異常が存在する場合にはどのような画像の見え方になるのか（どのような違和感を覚えるか）について理解させておいてもよい。これにより、検査が行い易くなる。 Before starting the examination, a training image in which a part of the image presented to the presentation unit 12 is intentionally deleted is shown to the subject in advance, and the subject has a visual field abnormality. If you do, you may want to understand what the image looks like (what kind of discomfort you feel). This facilitates the inspection.

そして、検査を開始すると、画像呈示制御部２２は、同時呈示制御と交互呈示制御とを行う。例えば、画像呈示制御部２２は、同時呈示制御を所定時間行った後に、交互呈示制御を所定時間行い、そして、このように同時呈示制御と交互呈示制御を行う処理を複数回繰り返して行う。一例として、画像呈示制御部２２は、同時呈示制御を１５秒間行った後に、交互呈示制御を１５秒間行い、このような同時呈示制御と交互呈示制御を行う処理を合計２回行う。また、交互呈示制御を行う際に画像を切り替える速さを表すスイッチング周波数は、被検者が画像の切り替えを自覚し難い周波数として、例えば、６０Ｈｚ以上とすることが望ましい。 Then, when the inspection is started, the image presentation control unit 22 performs simultaneous presentation control and alternate presentation control. For example, the image presentation control unit 22 performs the simultaneous presentation control for a predetermined time, then performs the alternate presentation control for a predetermined time, and repeats the process of performing the simultaneous presentation control and the alternate presentation control a plurality of times. As an example, the image presentation control unit 22 performs the simultaneous presentation control for 15 seconds, then the alternate presentation control for 15 seconds, and performs such a process of performing the simultaneous presentation control and the alternate presentation control twice in total. Further, it is desirable that the switching frequency indicating the speed at which the images are switched when the alternate presentation control is performed is, for example, 60 Hz or more as a frequency at which the subject is less likely to be aware of the image switching.

すると、画像呈示制御部２２が同時呈示制御を行ったときには、被検者は、右眼用画像と左眼用画像とを融像させた融像画像を自覚する。ここで、例えば、被検者の右眼に視野異常が存在する場合を想定する。この場合、被検者の右眼は、視野異常により右眼用画像において認識が困難な視覚的欠落部分α（認識できない、あるいは、認識し難い部分であって、例えば、図２にて破線で示すαの内側の部分）が存在している。しかしながら、被検者の脳に対して右眼用画像と左眼用画像の両画像の情報が同時に入っている状態であるので、視覚的欠落部分αの情報は、左眼用画像の情報により充填される。したがって、被検者は、右眼用画像と左眼用画像とを融像させた融像画像として、視覚的欠落部分αが存在していない画像、すなわち、例えば図２に示す画像において視覚的欠落部分αが存在していない画像を自覚する。 Then, when the image presentation control unit 22 performs simultaneous presentation control, the subject becomes aware of the fusion image in which the image for the right eye and the image for the left eye are fused. Here, for example, it is assumed that a visual field abnormality is present in the right eye of the subject. In this case, the right eye of the subject is a visually missing part α (a part that cannot be recognized or is difficult to recognize, for example, a broken line in FIG. 2) that is difficult to recognize in the image for the right eye due to a visual field abnormality. The inner part of α shown) exists. However, since the information of both the right eye image and the left eye image is simultaneously stored in the subject's brain, the information of the visually missing part α is based on the information of the left eye image. It is filled. Therefore, the subject visually obtains an image in which the visually missing portion α does not exist, that is, for example, the image shown in FIG. 2, as a fusion image obtained by fusing the image for the right eye and the image for the left eye. Be aware of the image in which the missing part α does not exist.

そして、このように被検者が右眼用画像と左眼用画像とを融像させた融像画像を自覚した状態で、画像呈示制御部２２は、交互呈示制御を行う。そして、これにより、前記のように同時呈示制御を行うことにより被検者が自覚した融像画像と、交互呈示制御を行うことにより被検者が自覚した画像との見え方の異なる部分の有無を検査することができる。 Then, the image presentation control unit 22 performs alternate presentation control in a state where the subject is aware of the fusion image obtained by fusing the right eye image and the left eye image in this way. As a result, the presence or absence of a portion of the appearance of the fusion image that the subject is aware of by performing the simultaneous presentation control as described above and the image that the subject is aware of by performing the alternate presentation control is present. Can be inspected.

すなわち、交互呈示制御を行うことにより右眼用画像と左眼用画像とを交互に呈示させたときには、被検者の脳に対して右眼用画像と左眼用画像の両画像の情報が同時に入っていない状態になる。すなわち、被検者の脳に対して右眼用画像の情報が入っているときには左眼用画像の情報が入っていない一方で、被検者の脳に対して左眼用画像の情報が入っているときには右眼用画像の情報が入っていない状態になる。 That is, when the right eye image and the left eye image are alternately presented by performing the alternate presentation control, the information of both the right eye image and the left eye image is displayed to the subject's brain. At the same time, it will not be in the state. That is, when the information of the image for the right eye is contained in the brain of the subject, the information of the image for the left eye is not input, while the information of the image for the left eye is input in the brain of the subject. When it is, the information of the image for the right eye is not included.

これにより、被検者が視野異常により右眼用画像において認識が困難な視覚的欠落部分αの情報は、左眼用画像の情報により十分に充填され難くなる。これは、交互呈示制御を行うときには、左右眼それぞれの視覚情報について投影と遮断が常時繰り返されるため、視野異常を有さない側の眼の視覚情報による視野異常部分への充填が安定して作用しなくなるためと思われる。したがって、交互呈示制御を行うことにより被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じる。ゆえに、被検者は、前記のように差分が生じた部分を、同時呈示制御が行われることにより自覚した融像画像との見え方が異なる部分として認識できる。 As a result, the information on the visually missing portion α, which is difficult for the subject to recognize in the right eye image due to the visual field abnormality, is not sufficiently filled with the information in the left eye image. This is because when the alternate presentation control is performed, projection and blocking of the visual information of each of the left and right eyes are constantly repeated, so that the visual information of the eye on the side having no visual field abnormality fills the visual field abnormality portion stably. It seems that it will not be done. Therefore, in the image that the subject is aware of by performing the alternate presentation control, a difference occurs between the visual field abnormal portion and the portion other than the visual field abnormal portion. Therefore, the subject can recognize the portion where the difference is generated as described above as a portion that looks different from the fusion image that he / she is aware of by performing the simultaneous presentation control.

例えば、図３に示すように、被検者は、視野異常部分に相当する視覚的欠落部分αが当該視覚的欠落部分α以外の部分よりも見え難く（例えば、格子を形成する線の濃淡が薄く、あるいは、格子を形成する線がぼやけるように）感じる部分として認識及び記憶できる。そして、検査終了後に、被検者は、同時呈示制御を行うことにより自覚した融像画像と、交互呈示制御を行うことにより被検者が自覚した画像との見え方が異なる部分の有無と場所を検者に伝える。 For example, as shown in FIG. 3, the subject is less likely to see the visually missing portion α corresponding to the abnormal visual field portion than the portion other than the visually missing portion α (for example, the shading of the lines forming the grid is It can be recognized and memorized as a thin part or a part that feels like the lines forming the grid are blurred). Then, after the examination is completed, the subject has a portion and a place where the appearance of the fusion image that the subject is aware of by performing the simultaneous presentation control and the image that the subject is aware of by performing the alternate presentation control are different. To the examiner.

ここで、このような交互呈示制御を行う際において、低速で（例えば、１Ｈｚで）右眼用画像と左眼用画像とを交互に呈示させたときを想定する。すると、このとき、右眼と左眼の各々の眼に対して右画像と左画像が連続して投影される時間が長くなる（すなわち、右眼用画像と左眼用画像とを交互に呈示させずに、右眼用画像または左眼用画像の一方のみ呈示した状態に近くなる）ので、例えば視野異常のある右眼に対して右眼用画像が連続して投影される時間が長くなる。そうすると、被検者の脳内において、被検者が視野異常により右眼用画像において認識が困難な視覚的欠落部分αの情報は、右眼用画像における視覚的欠落部分αの周辺部分の情報により充填され易くなる。すなわち、被検者の脳は、右眼用画像における視覚的欠落部分αの周辺部分の情報を参考にして、視覚的欠落部分αの情報を疑似的に作成し得ると考えられる。以上のことから、低速で右眼用画像と左眼用画像とを交互に呈示させたときには、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じ難くなる。 Here, when performing such alternate presentation control, it is assumed that the right eye image and the left eye image are alternately presented at a low speed (for example, at 1 Hz). Then, at this time, the time for which the right image and the left image are continuously projected to each of the right eye and the left eye becomes longer (that is, the image for the right eye and the image for the left eye are alternately presented. (It will be close to the state where only one of the right eye image and the left eye image is presented without doing so), so for example, the time for the right eye image to be continuously projected to the right eye with visual field abnormality becomes longer. .. Then, in the subject's brain, the information of the visually missing portion α that is difficult for the subject to recognize in the right eye image due to the visual field abnormality is the information of the peripheral portion of the visually missing portion α in the right eye image. Makes it easier to fill. That is, it is considered that the brain of the subject can pseudo-create the information of the visually missing portion α by referring to the information of the peripheral portion of the visually missing portion α in the image for the right eye. From the above, when the image for the right eye and the image for the left eye are presented alternately at low speed, it is difficult for a difference to occur between the abnormal visual field portion and the portion other than the abnormal visual field portion in the image that the subject is aware of. Become.

また、低速で右眼用画像と左眼用画像とを交互に呈示させたときには、被検者は画像の切り替えを自覚して画像のチラつきを感じ易くなるので、この画像のチラつきの影響によっても、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じ難くなる。 In addition, when the right eye image and the left eye image are presented alternately at low speed, the subject is likely to be aware of the image switching and feel the flickering of the image. In the image that the subject is aware of, it is difficult for a difference to occur between the abnormal visual field portion and the portion other than the abnormal visual field portion.

以上のように、低速で右眼用画像と左眼用画像とを交互に呈示させたときには、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じ難くなるので、被検者は、前記のように差分が生じた部分を、同時呈示制御が行われることにより自覚した融像画像との見え方が異なる部分として認識し難くなる。 As described above, when the image for the right eye and the image for the left eye are presented alternately at low speed, it is difficult for a difference to occur between the abnormal visual field portion and the portion other than the abnormal visual field portion in the image that the subject is aware of. Therefore, it becomes difficult for the subject to recognize the portion where the difference is generated as described above as a portion that looks different from the fusion image that he / she is aware of due to the simultaneous presentation control.

これに対して、本実施形態では、高速（例えば、６０Ｈｚ）で右眼用画像と左眼用画像とを交互に呈示させている。そのため、右眼と左眼の各々の眼に対して右画像と左画像が連続して投影される時間が短くなる（すなわち、右眼と左眼の各々の眼に対して投影される画像は点滅している状態になる）ので、例えば視野異常のある右眼に対して右眼用画像が連続して投影される時間が短くなる。そうすると、被検者の脳内において、被検者が視野異常により右眼用画像において認識が困難な視覚的欠落部分αの情報は、右眼用画像における視覚的欠落部分αの周辺部分の情報により充填され難くなると推測される。すなわち、被検者の脳は、右眼用画像における視覚的欠落部分αの周辺部分の情報から、視覚的欠落部分αでの充填知覚がし難くなると考えられる。以上のことから、高速で右眼用画像と左眼用画像とを交互に呈示させたときには、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じ易くなる。 On the other hand, in the present embodiment, the right eye image and the left eye image are alternately presented at high speed (for example, 60 Hz). Therefore, the time for which the right image and the left image are continuously projected to the right eye and the left eye is shortened (that is, the image projected to the right eye and the left eye is short). Since it is in a blinking state), for example, the time for the right eye image to be continuously projected to the right eye having a visual field abnormality is shortened. Then, in the subject's brain, the information of the visually missing portion α that is difficult for the subject to recognize in the right eye image due to the visual field abnormality is the information of the peripheral portion of the visually missing portion α in the right eye image. It is presumed that it will be difficult to fill with. That is, it is considered that it is difficult for the subject's brain to perceive filling in the visually missing portion α from the information in the peripheral portion of the visually missing portion α in the image for the right eye. From the above, when the image for the right eye and the image for the left eye are presented alternately at high speed, a difference is likely to occur between the abnormal visual field portion and the portion other than the abnormal visual field portion in the image that the subject is aware of. Become.

また、高速で右眼用画像と左眼用画像とを交互に呈示させたときには、被検者は画像の切り替えを自覚し難く画像のチラつきを感じ難くなるので、この画像のチラつきの影響を受け難く、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分との差分を自覚し易くなる。 In addition, when the right-eye image and the left-eye image are presented alternately at high speed, the subject is less likely to notice the switching of the image and is less likely to feel the flicker of the image, and is therefore affected by the flicker of this image. It is difficult for the subject to be aware of the difference between the abnormal visual field portion and the portion other than the abnormal visual field portion in the image that the subject is aware of.

以上のように、本実施形態では、高速で右眼用画像と左眼用画像とを交互に呈示させるので、被検者が自覚した画像において、視野異常部分と視野異常部分以外の部分とで差分が生じ易くなる。そのため、被検者は、前記のように差分が生じた部分を、同時呈示制御が行われることにより自覚した融像画像との見え方が異なる部分として認識し易くなる。 As described above, in the present embodiment, the image for the right eye and the image for the left eye are alternately presented at high speed. Therefore, in the image that the subject is aware of, the abnormal visual field portion and the portion other than the abnormal visual field portion are displayed. Differences are likely to occur. Therefore, the subject can easily recognize the portion where the difference occurs as described above as a portion that looks different from the fusion image that he / she is aware of by performing the simultaneous presentation control.

そして、被検者が「○○の箇所が見えにくく感じた」のように特定の場所の見え方が異なった（見え方に違和感を覚えた）と検者に伝えた場合は、検者は「両眼のどちらかの眼の特定の場所に視野異常が存在しているおそれがあるので、さらに精密な視機能検査を行う必要がある。」と診断して、検査は終了する。このようにして、右眼または左眼のいずれかに視野異常が存在していることを検出できる。一方、被検者が「特に見え方に違和感を覚える場所は無かった」と検者に伝えたときには、検者は「被検者の両眼において視野異常が存在しない」と診断して、検査は終了する。 Then, if the subject tells the examiner that the appearance of a specific place is different (the appearance is uncomfortable), such as "I felt that the part of XX was difficult to see", the examiner The diagnosis is completed with the diagnosis, "Because there is a possibility that a visual field abnormality exists in a specific place in either eye of both eyes, it is necessary to perform a more precise visual function test." In this way, the presence of visual field abnormalities in either the right eye or the left eye can be detected. On the other hand, when the subject told the examiner that "there was no place where he felt something was wrong with his appearance," the examiner diagnosed that "there was no visual field abnormality in both eyes of the subject," and the examination was conducted. Is finished.

このようにして、本実施形態では、被検者の右眼と左眼について、同時に視機能検査を行うことができる。また、右眼用画像と左眼用画像とを同時に呈示させ、かつ、右眼用画像と左眼用画像とを交互に呈示させるだけでよいので、簡易な手法で検査を済ませることができる。そのため、短時間（例えば、１分以内）で視野異常が存在するか否かの検査が可能になる。したがって、本実施形態の視機能検査装置１によれば、定期健診のような日常的な検査の中で、視野異常が存在するか否かを検査することができる。また、簡易な装置構成により製造コストを低減できるので、安価にすることができる。さらに、被検者に対して複雑なタスクは要求しないので、検査結果が被検者の年齢や学習効果によって変動し難い。そのため、被検者の慣れなどによる検査結果の信頼性への影響が生じ難く、１回の検査で診断を済ませることができる。 In this way, in the present embodiment, the visual function test can be performed simultaneously on the right eye and the left eye of the subject. Further, since it is only necessary to present the image for the right eye and the image for the left eye at the same time and the image for the right eye and the image for the left eye alternately, the examination can be completed by a simple method. Therefore, it is possible to inspect whether or not there is a visual field abnormality in a short time (for example, within 1 minute). Therefore, according to the visual function test device 1 of the present embodiment, it is possible to inspect whether or not there is a visual field abnormality in a daily examination such as a regular medical examination. In addition, the manufacturing cost can be reduced by a simple device configuration, so that the cost can be reduced. Furthermore, since no complicated task is required for the subject, the test result is unlikely to fluctuate depending on the age of the subject and the learning effect. Therefore, the reliability of the test result is unlikely to be affected by the habituation of the subject, and the diagnosis can be completed with one test.

なお、右眼用画像と左眼用画像は、立体画像を生成するために互いに視差を有する画像としてもよい。例えば、右眼用画像と左眼用画像は、図４に示すような花の立体画像を生成するため画像とする。これにより、画像呈示制御部２２が同時呈示制御を行ったときに、被検者は、右眼用画像と左眼用画像とを融像させた融像画像として、全体に亘って立体感を覚える立体画像を自覚する。そして、被検者眼において視野異常が存在する場合には、被検者は、同時呈示制御を行うことにより自覚した融像画像と、交互呈示制御を行うことにより被検者が自覚した画像との見え方が異なる部分として、例えば、視野異常部分に相当する部分において立体感が感じられなくなる。これにより、右眼または左眼のいずれかに視野異常が存在することを検出できる。 The image for the right eye and the image for the left eye may be images having parallax with each other in order to generate a stereoscopic image. For example, the image for the right eye and the image for the left eye are images for generating a three-dimensional image of a flower as shown in FIG. As a result, when the image presentation control unit 22 performs simultaneous presentation control, the subject gives a stereoscopic effect as a fusion image obtained by fusing the right eye image and the left eye image. Be aware of the stereoscopic images you remember. When there is a visual field abnormality in the subject's eye, the subject has a fusion image that he / she is aware of by performing simultaneous presentation control and an image that the subject is aware of by performing alternate presentation control. As a portion where the appearance of the image is different, for example, a stereoscopic effect cannot be felt in a portion corresponding to an abnormal visual field portion. This makes it possible to detect the presence of visual field abnormalities in either the right eye or the left eye.

また、右眼用画像と左眼用画像は、形状同一で色の異なる画像であるとしてもよい。このとき、例えば、右眼用画像と左眼用画像は、図５に示すように複数の模様が配置された画像であって同じ位置に配置される模様について形状が同一であるが色が異なる画像（例えば、一方の画像が赤色で、他方の画像が青色）とする。これにより、画像呈示制御部２２が同時呈示制御を行ったときに、被検者は、右眼用画像と左眼用画像とを融像させた融像画像として、全体に亘って２つの色を混ぜたような色（例えば、紫色）、あるいは、２つの色とは異なる無彩色の模様の画像を自覚する。 Further, the image for the right eye and the image for the left eye may be images having the same shape but different colors. At this time, for example, the image for the right eye and the image for the left eye are images in which a plurality of patterns are arranged as shown in FIG. 5, and the patterns arranged at the same position have the same shape but different colors. An image (for example, one image is red and the other image is blue). As a result, when the image presentation control unit 22 performs simultaneous presentation control, the subject can obtain two colors as a fusion image obtained by fusing the image for the right eye and the image for the left eye. You will be aware of an image that looks like a mixture of colors (for example, purple) or an achromatic pattern that is different from the two colors.

そして、被検者眼において視野異常が存在する場合には、画像呈示制御部２２が同時呈示制御と交互呈示制御を行うことにより、被検者は、同時呈示制御を行うことにより自覚した融像画像と、交互呈示制御を行うことにより被検者が自覚した画像との見え方が異なる部分として、視野異常部分に相当する部分が他の部分と色合いが異なっていると感じる。例えば、被検者は、「全体的には紫色であるが、○○の箇所だけが赤色や青色に近い色になっており色合いが異なっている」、または、「全体的には赤色（青色）であるが、○○の箇所だけが青色（赤色）になっており色合いが異なっている」と感じる。これにより、右眼または左眼のいずれかに視野異常が存在することを検出できる。 Then, when there is a visual field abnormality in the subject's eye, the image presentation control unit 22 performs simultaneous presentation control and alternate presentation control, so that the subject is aware of the fusion by performing the simultaneous presentation control. As a part in which the appearance of the image and the image that the subject perceives by performing the alternate presentation control are different, it is felt that the part corresponding to the abnormal visual field part has a different hue from the other parts. For example, the subject said, "It is purple overall, but only the part XX is a color close to red or blue and the hue is different", or "Overall red (blue). ), But only the part of ○○ is blue (red) and the hue is different. " This makes it possible to detect the presence of visual field abnormalities in either the right eye or the left eye.

なお、画像呈示制御部２２が同時呈示制御と交互呈示制御を行う順序は特に限定されず、画像呈示制御部２２は、交互呈示制御を行った後に、同時呈示制御を行ってもよい。 The order in which the image presentation control unit 22 performs the simultaneous presentation control and the alternate presentation control is not particularly limited, and the image presentation control unit 22 may perform the simultaneous presentation control after performing the alternate presentation control.

また、右眼用画像と左眼用画像は、静止画像に限られず、説明し易いストーリー性を有する動画映像であってもよい。ここで、右眼用画像と左眼用画像が例えば図２に示すような格子図柄の静止画像である場合には、格子図柄の格子枠内に視野異常部分が位置する（つまり、格子図柄の線と視野異常部分とが重ならない）と、患者は、視野異常部分を自覚し難くなると考えられる。これに対し、右眼用画像と左眼用画像が動画映像である場合には、像は一定でないため、視野異常部分に何かしらの図柄が位置する可能性があり、患者は視野異常部分を自覚し易いと考えられる。そして、このとき、右眼用画像と左眼用画像は、例えば、同一動画映像とすることが望ましい。また、呈示部１２は、１つのディスプレイで形成されており、当該ディスプレイに仕切りを設けておき、仕切りの両側に各々右眼用画像と左眼用画像が呈示されるものとしてもよい。 Further, the image for the right eye and the image for the left eye are not limited to the still image, and may be a moving image having a story that is easy to explain. Here, when the image for the right eye and the image for the left eye are still images of the grid pattern as shown in FIG. 2, for example, the visual field abnormality portion is located in the grid frame of the grid pattern (that is, the grid pattern If the line and the abnormal visual field do not overlap), the patient may not be aware of the abnormal visual field. On the other hand, when the image for the right eye and the image for the left eye are moving images, the image is not constant, so some pattern may be located in the abnormal visual field, and the patient is aware of the abnormal visual field. It is considered easy to do. At this time, it is desirable that the right-eye image and the left-eye image are, for example, the same moving image. Further, the presentation unit 12 may be formed of one display, and a partition may be provided on the display so that an image for the right eye and an image for the left eye are presented on both sides of the partition, respectively.

以上のように、本実施形態の視機能検査装置１において、画像呈示制御部２２は、被検者に右眼用画像と左眼用画像とを融像させた融像画像を自覚させるために同時呈示制御を行う。そして、さらに、画像呈示制御部２２は、前記の融像画像と、呈示部１２にて右眼用画像と左眼用画像とを交互に呈示させることにより被検者が自覚した画像との見え方の異なる部分の有無を検査するために交互呈示制御を行う。 As described above, in the visual function test device 1 of the present embodiment, the image presentation control unit 22 makes the subject aware of the fusion image obtained by fusing the image for the right eye and the image for the left eye. Simultaneous presentation control is performed. Further, the image presentation control unit 22 displays the fusion image and the image that the subject is aware of by alternately presenting the right eye image and the left eye image on the presentation unit 12. Alternate presentation control is performed to inspect the presence or absence of different parts.

このように、本実施形態では、同時呈示制御により被検者に右眼用画像と左眼用画像とを融像させた融像画像を自覚させるとともに、交互呈示制御が行われる。ここで、交互呈示制御にて右眼用画像と左眼用画像とを交互に呈示させるときには、被検者の脳に対して右眼用画像と左眼用画像の両画像の情報が同時に入っていない状態になる。このとき、例えば、右眼（左眼）に視野異常が存在する場合に、被検者が視野異常により右眼用画像（左眼用画像）において認識できない部分の情報を、左眼用画像（右眼用画像）の情報で十分に充填し難くなる。そのため、交互呈示制御により右眼用画像と左眼用画像とを交互に呈示させることにより被検者が自覚する画像において、視野異常部分と視野異常部分以外の部分とで差分が生じる。したがって、被検者は、前記の差分が生じた部分を、同時呈示制御により自覚した融像画像との見え方が異なる部分として認識できるので、右眼または左眼のいずれかに視野異常が存在することを検出できる。 As described above, in the present embodiment, the simultaneous presentation control makes the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, and the alternate presentation control is performed. Here, when the image for the right eye and the image for the left eye are alternately presented by the alternate presentation control, the information of both the image for the right eye and the image for the left eye is simultaneously input to the brain of the subject. It will be in a state where it is not. At this time, for example, when there is a visual field abnormality in the right eye (left eye), the information of the portion that the subject cannot recognize in the right eye image (left eye image) due to the visual field abnormality is obtained in the left eye image (left eye image). It becomes difficult to fully fill with the information of the right eye image). Therefore, in the image that the subject is aware of by alternately presenting the right eye image and the left eye image by the alternate presentation control, a difference occurs between the visual field abnormal portion and the portion other than the visual field abnormal portion. Therefore, the subject can recognize the part where the above difference occurs as a part that looks different from the fusion image that he / she noticed by the simultaneous presentation control, so that there is a visual field abnormality in either the right eye or the left eye. Can be detected.

このようにして、本実施形態では、右眼と左眼について同時に、右眼または左眼のいずれかに視野異常が存在するか否かについての視機能検査を行うことができる。また、右眼用画像と左眼用画像とを同時に呈示させ、かつ、右眼用画像と左眼用画像とを交互に呈示させるだけでよいので、簡易な手法で検査を済ませることができる。そのため、短時間で視野異常が存在するか否かの検査が可能になる。したがって、定期健診のような日常的検査において視野異常が存在するか否かを検査することができるので、例えば緑内障の疾患がある患者に早期段階で緑内障の発症に伴って生じる暗点や感度低下による視野欠損を自覚させることができる。そして、このようにして、緑内障などの疾患の早期発見を促進させることができる。また、簡易な装置構成で検査を行うことができるので、装置の製造コストを低減させることができる。 In this way, in the present embodiment, it is possible to simultaneously perform a visual function test on the right eye and the left eye as to whether or not there is a visual field abnormality in either the right eye or the left eye. Further, since it is only necessary to present the image for the right eye and the image for the left eye at the same time and the image for the right eye and the image for the left eye alternately, the examination can be completed by a simple method. Therefore, it is possible to inspect whether or not there is a visual field abnormality in a short time. Therefore, it is possible to examine whether or not visual field abnormalities are present in routine examinations such as regular medical examinations, and thus, for example, scotoma and sensitivity that occur with the onset of glaucoma at an early stage in patients with glaucoma disease. It is possible to be aware of visual field defects due to deterioration. In this way, early detection of diseases such as glaucoma can be promoted. Further, since the inspection can be performed with a simple device configuration, the manufacturing cost of the device can be reduced.

そして、右眼用画像と左眼用画像は、同一画像とする。これにより、呈示部１２にて呈示される右眼用画像と左眼用画像との間には元々差異が存在しないので、交互呈示制御を行うことにより被検者が自覚した画像において視野異常部分と視野異常部分以外の部分とで差分が強調され易くなる。そのため、安定した検査を行うことができる。 Then, the image for the right eye and the image for the left eye are the same image. As a result, since there is originally no difference between the image for the right eye and the image for the left eye presented by the presentation unit 12, the visual field abnormality portion in the image that the subject is aware of by performing the alternate presentation control. The difference is likely to be emphasized between the part and the part other than the abnormal visual field part. Therefore, a stable inspection can be performed.

また、右眼用画像と左眼用画像は、立体画像を生成するために互いに視差を有する画像としてもよい。これにより、被検者が自覚した画像において、視野異常部分に相当する部分において立体感が感じられなくなるので、右眼または左眼のいずれかに視野異常が存在することを検出できる。 Further, the right eye image and the left eye image may be images having parallax with each other in order to generate a stereoscopic image. As a result, in the image that the subject is aware of, the stereoscopic effect is not felt in the portion corresponding to the visual field abnormality portion, so that it is possible to detect the presence of the visual field abnormality in either the right eye or the left eye.

また、右眼用画像と左眼用画像は、形状同一で色の異なる画像としてもよい。これにより、被検者が自覚した画像において、視野異常部分に相当する部分において色合いが異なるように感じられるので、右眼または左眼のいずれかに視野異常が存在することを検出できる。 Further, the image for the right eye and the image for the left eye may be images having the same shape but different colors. As a result, in the image that the subject is aware of, the color tone seems to be different in the portion corresponding to the visual field abnormality portion, so that it is possible to detect the presence of the visual field abnormality in either the right eye or the left eye.

なお、呈示部１２は、右眼用画像と左眼用画像として、同一画像と、立体画像を生成するために互いに視差を有する画像と、形状同一で色の異なる画像のうちの少なくとも一つを選択して呈示できるようにしておけば、被検者に応じて画像を選択することができる。このとき、画像の選択は、被検者または検者が行うとしてもよい。これにより、被検者に応じた検査を行うことができるので、被検者に関わらず検査の精度を維持できる。また、交互呈示制御を行う際に画像を切り替える速さを表すスイッチング周波数（呈示切替周波数）を選択する機能を有することで、視野異常の程度や被検者の年齢などに応じた適切な検査が可能になる。 The presentation unit 12 serves as an image for the right eye and an image for the left eye at least one of the same image, an image having a difference in distance from each other in order to generate a stereoscopic image, and an image having the same shape but different colors. If it can be selected and presented, the image can be selected according to the subject. At this time, the image may be selected by the subject or the examiner. As a result, the inspection can be performed according to the subject, so that the accuracy of the inspection can be maintained regardless of the subject. In addition, by having a function to select a switching frequency (presentation switching frequency) that indicates the speed at which images are switched when performing alternate presentation control, an appropriate test can be performed according to the degree of visual field abnormality and the age of the subject. It will be possible.

また、変形例として、制御部１４に接続するメモリ（不図示）や制御部１４にて再生可能なディスク（不図示）などに記憶されるプログラムが、呈示部１２にて右眼用画像と左眼用画像とを同時に呈示させる同時呈示処理と、呈示部１２にて右眼用画像と左眼用画像とを交互に呈示させる交互呈示処理と、を制御部１４に備わるプロセッサ（不図示）に実行させるとしてもよい。このとき、当該プログラムは、被検者に右眼用画像と左眼用画像とを融像させた融像画像を自覚させるために同時呈示処理を制御部１４に備わるプロセッサに実行させ、さらに、融像画像と呈示部１２にて右眼用画像と左眼用画像とを交互に呈示させることにより被検者が自覚した画像との見え方の異なる部分の有無を検査するために交互呈示処理を制御部１４に備わるプロセッサに実行させる。 Further, as a modification, a program stored in a memory (not shown) connected to the control unit 14 or a disc (not shown) reproducible by the control unit 14 is displayed on the presentation unit 12 as an image for the right eye and left. A processor (not shown) provided in the control unit 14 is provided with a simultaneous presentation process for simultaneously presenting an eye image and an alternate presentation process for alternately presenting a right eye image and a left eye image at the presentation unit 12. It may be executed. At this time, the program causes the processor provided in the control unit 14 to execute a simultaneous presentation process in order to make the subject aware of the fused image obtained by fusing the image for the right eye and the image for the left eye. By alternately presenting the image for the right eye and the image for the left eye on the fusion image and the presentation unit 12, the alternate presentation process is performed to inspect the presence or absence of a portion different in appearance from the image that the subject is aware of. Is executed by the processor provided in the control unit 14.

なお、上記した実施の形態は単なる例示にすぎず、本開示を何ら限定するものではなく、その要旨を逸脱しない範囲内で種々の改良、変形が可能であることはもちろんである。 It should be noted that the above-described embodiment is merely an example and does not limit the present disclosure in any way, and it goes without saying that various improvements and modifications can be made without departing from the gist thereof.

１ 視機能検査装置
１１ 筐体部
１２ 呈示部
１２Ｒ 右眼用呈示部
１２Ｌ 左眼用呈示部
１３ 光学系
１３Ｒ 右眼用光学系
１３Ｌ 左眼用光学系
１４ 制御部
２１ 通信部
２２ 画像呈示制御部
ＥＲ 右眼
ＥＬ 左眼
Ｍ 固視標
α 視覚的欠落部分 1 Visual function test device 11 Housing unit 12 Presentation unit 12R Right eye presentation unit 12L Left eye presentation unit 13 Optical system 13R Right eye optical system 13L Left eye optical system 14 Control unit 21 Communication unit 22 Image presentation control unit ER Right eye EL Left eye M Fixed target α Visual missing part

Claims (6)

被検者眼の視野異常の有無を検査する視機能検査装置であって、
前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、
前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、
前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、
前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、
前記右眼用画像と前記左眼用画像は、同一画像であること、
を特徴とする視機能検査装置。 A visual function tester that inspects the subject's eyes for visual field abnormalities.
An image for projecting to the right eye of the subject's eye, or a moving image for the right eye including an fixation target, and an image or moving image for projecting to the left eye of the subject's eye. An image for the left eye that is an image and includes a fixation target, and a presentation part that presents
Simultaneous presentation control in which the image for the right eye and the image for the left eye are simultaneously presented at the presentation unit, and alternate presentation in which the image for the right eye and the image for the left eye are alternately presented at the presentation unit. It has an image presentation control unit that controls and performs control.
The image presentation control unit performs the simultaneous presentation control in order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, and the fusion image and the presentation. By alternately presenting the image for the right eye and the image for the left eye in the unit, the alternate presentation control is performed in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. Yes,
The image presentation control unit repeats the processes of performing the simultaneous presentation control and the alternate presentation control a plurality of times.
The image for the right eye and the image for the left eye must be the same image.
A visual function test device characterized by. 被検者眼の視野異常の有無を検査する視機能検査装置であって、
前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、
前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、
前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、
前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、
前記右眼用画像と前記左眼用画像は、立体画像を生成するために互いに視差を有する画像であり、
前記同時呈示制御を行ったときに、前記被検者に、前記融像画像として、全体に亘って立体感を覚える立体画像を自覚させ、
前記交互呈示制御を行う際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、
を特徴とする視機能検査装置。 A visual function tester that inspects the subject's eyes for visual field abnormalities.
An image for projecting to the right eye of the subject's eye, or a moving image for the right eye including an fixation target, and an image or moving image for projecting to the left eye of the subject's eye. An image for the left eye that is an image and includes a fixation target, and a presentation part that presents
Simultaneous presentation control in which the image for the right eye and the image for the left eye are simultaneously presented at the presentation unit, and alternate presentation in which the image for the right eye and the image for the left eye are alternately presented at the presentation unit. It has an image presentation control unit that controls and performs control.
The image presentation control unit performs the simultaneous presentation control in order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, and the fusion image and the presentation. By alternately presenting the image for the right eye and the image for the left eye in the unit, the alternate presentation control is performed in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. ,
The image presentation control unit repeats the processes of performing the simultaneous presentation control and the alternate presentation control a plurality of times.
The right-eye image and the left eye image, Ri image der having a parallax for generating a stereoscopic image,
When the simultaneous presentation control is performed, the subject is made aware of a stereoscopic image that gives a stereoscopic effect as a whole as the fusion image.
When performing the alternate presentation control, the subject switches between the right eye image and the left eye image by setting a switching frequency indicating the speed at which the right eye image and the left eye image are switched. Alternately presenting the image for the right eye and the image for the left eye at a frequency that is difficult to notice.
A visual function test device characterized by. 被検者眼の視野異常の有無を検査する視機能検査装置であって、
前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像と、を呈示する呈示部と、
前記呈示部にて前記右眼用画像と前記左眼用画像とを同時に呈示させる同時呈示制御と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示制御と、を行う画像呈示制御部と、を有し、
前記画像呈示制御部は、被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示制御を行い、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示制御を行い、
前記画像呈示制御部は、前記同時呈示制御と前記交互呈示制御を行う処理を複数回繰り返して行い、
前記右眼用画像と前記左眼用画像は、形状同一で色の異なる画像であり、
前記同時呈示制御を行ったときに、前記被検者に、前記融像画像として、全体に亘って２つの色を混ぜたような色、あるいは、２つの色とは異なる無彩色の模様の画像を自覚させ、
前記交互呈示制御を行う際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、
を特徴とする視機能検査装置。 A visual function tester that inspects the subject's eyes for visual field abnormalities.
An image for projecting to the right eye of the subject's eye, or a moving image for the right eye including an fixation target, and an image or moving image for projecting to the left eye of the subject's eye. An image for the left eye that is an image and includes a fixation target, and a presentation part that presents
Simultaneous presentation control in which the image for the right eye and the image for the left eye are simultaneously presented at the presentation unit, and alternate presentation in which the image for the right eye and the image for the left eye are alternately presented at the presentation unit. It has an image presentation control unit that controls and performs control.
The image presentation control unit performs the simultaneous presentation control in order to make the subject aware of the fusion image obtained by fusing the right eye image and the left eye image, and the fusion image and the presentation. By alternately presenting the image for the right eye and the image for the left eye in the unit, the alternate presentation control is performed in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. ,
The image presentation control unit repeats the processes of performing the simultaneous presentation control and the alternate presentation control a plurality of times.
The right-eye image and the left eye image, Ri image der of different colors in the form same,
When the simultaneous presentation control is performed, the subject is given a color as the fusion image, which is a mixture of two colors as a whole, or an image of an achromatic pattern different from the two colors. Be aware of
When performing the alternate presentation control, the subject switches between the right eye image and the left eye image by setting a switching frequency indicating the speed at which the right eye image and the left eye image are switched. Alternately presenting the image for the right eye and the image for the left eye at a frequency that is difficult to notice.
A visual function test device characterized by. 被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、
呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、
被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、
前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、
前記右眼用画像と前記左眼用画像は、同一画像であること、
を特徴とする視機能検査用プログラム。 It is a program for visual function test to check the presence or absence of visual field abnormality in the subject's eye.
An image for projecting to the right eye of the subject's eye at the presentation portion, or an image for the right eye which is a moving image and includes a fixation target, and an image for projecting to the left eye of the subject's eye. Simultaneous presentation processing in which an image or a moving image and an image for the left eye including a fixation target are presented at the same time, and the image for the right eye and the image for the left eye are alternately presented at the presentation portion. It causes the processor to execute the alternate presentation process.
In order to make the subject aware of the fusion image obtained by fusing the image for the right eye and the image for the left eye, the processor is made to execute the simultaneous presentation process, and the fusion image and the presentation unit are used. By alternately presenting the image for the right eye and the image for the left eye, the alternate presentation process is executed on the processor in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. Let me
The simultaneous presentation process and the alternate presentation process are repeated a plurality of times to cause the processor to execute the process.
The image for the right eye and the image for the left eye must be the same image.
A program for visual function testing characterized by. 被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、It is a program for visual function test to check the presence or absence of visual field abnormality in the subject's eye.
呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、An image for projecting to the right eye of the subject's eye at the presentation portion, or an image for the right eye which is a moving image and includes a fixation target, and an image for projecting to the left eye of the subject's eye. Simultaneous presentation processing in which an image or a moving image and an image for the left eye including a fixation target are presented at the same time, and the image for the right eye and the image for the left eye are alternately presented at the presentation portion. It causes the processor to execute the alternate presentation process.
被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、In order to make the subject aware of the fusion image obtained by fusing the image for the right eye and the image for the left eye, the processor is made to execute the simultaneous presentation process, and the fusion image and the presentation unit are used. By alternately presenting the image for the right eye and the image for the left eye, the alternate presentation process is executed on the processor in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. Let me
前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、The simultaneous presentation process and the alternate presentation process are repeated a plurality of times to cause the processor to execute the process.
前記右眼用画像と前記左眼用画像は、立体画像を生成するために互いに視差を有する画像であり、The image for the right eye and the image for the left eye are images having parallax with each other in order to generate a stereoscopic image.
前記同時呈示処理を前記プロセッサに実行させたときに、前記被検者に、前記融像画像として、全体に亘って立体感を覚える立体画像を自覚させ、When the processor is made to execute the simultaneous presentation process, the subject is made aware of a stereoscopic image that gives a stereoscopic effect as a whole as the fusion image.
前記交互呈示処理を前記プロセッサに実行させる際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、When the processor is made to execute the alternate presentation process, the subject sets a switching frequency indicating the speed at which the image for the right eye and the image for the left eye are switched by the subject for the image for the right eye and the image for the left eye. Alternately presenting the image for the right eye and the image for the left eye at a frequency at which it is difficult to notice the switching of images.
を特徴とする視機能検査用プログラム。A program for visual function testing characterized by. 被検者眼の視野異常の有無を検査する視機能検査用プログラムであって、It is a program for visual function test to check the presence or absence of visual field abnormality in the subject's eye.
呈示部にて前記被検者眼の右眼に投影するための画像、または動画映像であって固視標が含まれる右眼用画像と、前記被検者眼の左眼に投影するための画像、または動画映像であって固視標が含まれる左眼用画像とを同時に呈示させる同時呈示処理と、前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させる交互呈示処理と、をプロセッサに実行させるものであり、An image for projecting to the right eye of the subject's eye at the presentation portion, or an image for the right eye which is a moving image and includes a fixation target, and an image for projecting to the left eye of the subject's eye. Simultaneous presentation processing in which an image or a moving image and an image for the left eye including a fixation target are presented at the same time, and the image for the right eye and the image for the left eye are alternately presented at the presentation portion. It causes the processor to execute the alternate presentation process.
被検者に前記右眼用画像と前記左眼用画像とを融像させた融像画像を自覚させるために前記同時呈示処理を前記プロセッサに実行させ、前記融像画像と前記呈示部にて前記右眼用画像と前記左眼用画像とを交互に呈示させることにより前記被検者が自覚した画像との見え方の異なる部分の有無を検査するために前記交互呈示処理を前記プロセッサに実行させ、In order to make the subject aware of the fusion image obtained by fusing the image for the right eye and the image for the left eye, the processor is made to execute the simultaneous presentation process, and the fusion image and the presentation unit are used. By alternately presenting the image for the right eye and the image for the left eye, the alternate presentation process is executed on the processor in order to inspect the presence or absence of a portion having a different appearance from the image that the subject is aware of. Let me
前記同時呈示処理と前記交互呈示処理を複数回繰り返して前記プロセッサに実行させ、The simultaneous presentation process and the alternate presentation process are repeated a plurality of times to cause the processor to execute the process.
前記右眼用画像と前記左眼用画像は、形状同一で色の異なる画像であり、The image for the right eye and the image for the left eye are images having the same shape but different colors.
前記同時呈示処理を前記プロセッサに実行させたときに、前記被検者に、前記融像画像として、全体に亘って２つの色を混ぜたような色、あるいは、２つの色とは異なる無彩色の模様の画像を自覚させ、When the simultaneous presentation process is executed by the processor, the subject is given a color as if the two colors are mixed throughout as the fusion image, or an achromatic color different from the two colors. Be aware of the image of the pattern of
前記交互呈示処理を前記プロセッサに実行させる際には、前記右眼用画像と前記左眼用画像を切り替える速さを表すスイッチング周波数を、前記被検者が前記右眼用画像と前記左眼用画像の切り替えを自覚し難い周波数にして、前記右眼用画像と前記左眼用画像とを交互に呈示させること、When the processor is made to execute the alternate presentation process, the subject sets a switching frequency indicating the speed at which the image for the right eye and the image for the left eye are switched by the subject for the image for the right eye and the image for the left eye. Alternately presenting the image for the right eye and the image for the left eye at a frequency at which it is difficult to notice the switching of images.
を特徴とする視機能検査用プログラム。A program for visual function testing characterized by.
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