KR101966164B1 - System and method for ophthalmolgic test using virtual reality - Google Patents

Abstract

According to the present invention, an HMD device (110) for ophthalmologic examination worn by an examinee for ophthalmologic examination; And an image providing unit (120) for providing a 3D virtual reality image for an ophthalmologic examination to the HMD for ophthalmologic examination, wherein the HMD for ophthalmologic examination comprises three dimensional And an eyeball monitoring module (112) for monitoring a change in an eyeball corresponding to a three-dimensional virtual reality image displayed on the inspection image display, wherein the visual observation display unit (111) An ophthalmologic examination system using reality, and an ophthalmologic examination method using the same are provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic examination system using a virtual reality,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic examination technique, and more particularly, to an inspection system capable of performing various ophthalmic tests using a virtual reality and an inspection method using the same.

As an ophthalmologic examination, strabismus test, binocular test, ocular circuit test, stereoacuity test, binocular test, diplopia test, pupil test, nystagmus test and visual field test are performed. There are many cases where it is inaccurate, and a relatively large inspection space is required in some cases.

For example, conventional strabismus examination requires a minimum of 6 m of examination space, and it is impossible to accurately measure the strabismus at rest with strabismus of more than 50 prism diopters. In the binocular test, The result is inaccurate because the degree of turning the head is not consistent. During the visual field test, the examinee must keep an eye on the front face continuously. The reliability of the test is degraded.
(Patent Document 1) KR10-2015-0110475 A
(Patent Document 2) KR10-2009-0024097 A

It is an object of the present invention to provide an ophthalmologic examination system and method which can be accurately performed in an inspection space in which various ophthalmic examinations are reduced.

According to an aspect of the present invention,

An HMD device (110) for ophthalmologic examination worn by an examinee for ophthalmologic examination; And an image providing unit (120) for providing a 3D virtual reality image for an ophthalmologic examination to the HMD for ophthalmologic examination, wherein the HMD for ophthalmologic examination comprises three dimensional And an eyeball monitoring module (112) for monitoring a change in an eyeball corresponding to a three-dimensional virtual reality image displayed on the inspection image display, wherein the visual observation display unit (111) An ophthalmologic examination system using reality is provided.

Wherein the eye monitoring module comprises first and second eye monitoring units (113, 114) independently of each eye of the examinee, and each of the first and second eye monitoring units comprises infrared rays A camera and a gaze tracking unit for tracking the gaze of the corresponding eyeball.

The ophthalmologic examination system may further include a controller 130 for controlling the image provider.

According to another aspect of the present invention, in order to achieve the above object of the present invention,

An ophthalmologic examination method using the ophthalmic examination system, the method comprising: displaying an image of a three-dimensional virtual reality image for eye examination through the image display unit; And an eyeball monitoring step of monitoring the state of the eyeball changing corresponding to the 3D virtual reality image for eyeball displayed through the image display step using the eyeball monitoring module. do.

In the image display step, the distant and near target images are alternately displayed on the right eye and the left eye so that strabismus inspection can be performed.

When the eye movement is detected in the eyeball monitoring step, the image corresponding to a single eye is moved in the image display step to move to a point where the eye movement does not occur, and the distance difference of the binaural target is measured So that the dead time can be measured.

In the eyeball monitoring step, the target image is imaged in the front, top, bottom, left, right, upper left, lower left, upper right, and lower right positions and the position of the corresponding eyeball is observed in the eyeball monitoring step, .

According to the present invention, all of the objects of the present invention described above can be achieved. Specifically, the HMD device 110 for an ophthalmologic examination worn by an examinee for ophthalmologic examination; And an image providing unit (120) for providing a 3D virtual reality image for an ophthalmologic examination to the HMD for ophthalmologic examination, wherein the HMD for ophthalmologic examination comprises three dimensional And an eyeball monitoring module (112) for monitoring a change in an eyeball corresponding to a three-dimensional virtual reality image displayed on the inspection image display, wherein the visual observation display unit (111) Since the ophthalmologic examination system and method using the reality are provided, it is possible to perform various ophthalmologic examinations accurately, and the examination space is remarkably reduced as compared with the conventional one.

1 is a block diagram showing the configuration of an ophthalmologic examination system using a virtual reality according to an embodiment of the present invention.
Fig. 2 is a view showing a schematic configuration of the head-mounted display device shown in Fig. 1. Fig.

Hereinafter, the configuration and operation of an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an ophthalmologic examination system using a virtual reality according to an embodiment of the present invention. 1, an ophthalmologic examination system 100 using a virtual reality according to an exemplary embodiment of the present invention includes a head mounted display (HMD) apparatus for an ophthalmologic examination, An image providing unit 120 for providing a three-dimensional virtual reality image for an ophthalmologic examination with an HMD unit 110 for ophthalmologic examination, An eyeball image display unit 140 for displaying an eye image of a subject acquired from the HMD device 110 for eye examination to an examiner, an HMD device 110 for ophthalmologic examination, And a storage unit 150 for storing an eye image of the examinee acquired from the subject and the examination result. The ophthalmologic examination system 100 performs various ophthalmologic examinations such as strabismus examination, binocular exercise test, ocular circuit examination, stereopsis examination, diplopia examination, pupillary examination, nystagmus test, and visual field examination using the virtual reality . Although not shown, the HMD device 100 for ophthalmologic examination can be configured to enable remote inspection by being connected to other configurations by a network such as the Internet.

The HMD device 110 for ophthalmologic examination is a device to be worn on the head by a testee for ophthalmologic examination. The HMD device for ophthalmologic examination 110 displays a 3D virtual reality image for ophthalmologic examination provided from the image data providing unit 120 to the examinee and provides the ocular image of the examinee to the examinee. An example of the configuration of the HMD device 110 for ophthalmologic examination for this purpose is shown in FIG. 2, the HMD device for ophthalmologic examination 110 includes an inspection image display unit 111 for displaying a three-dimensional virtual reality image for ophthalmologic inspection provided from the image providing unit 120, And an eyeball monitoring module 112 for monitoring a change in an eyeball corresponding to a three-dimensional virtual reality image displayed on the display unit 111. [

The inspection image display unit 111 displays the 3D virtual reality image for the ophthalmologic examination provided from the image providing unit 120 to the testee wearing the HMD apparatus 110 for ophthalmologic examination. The three-dimensional virtual reality image displayed through the image display unit for inspection 111 can be controlled by the inspector through the controller 130 according to the type of eye examination.

The eyeball monitoring module 112 monitors the state of the eyeball corresponding to the three-dimensional virtual reality image displayed on the image display unit 111 for inspection. The eye-monitoring module 112 includes a first eye-monitoring unit 113 and a second eye-monitoring unit 114 that independently monitor each eye of the examinee. Each of the first eye monitoring unit 113 and the second eye monitoring unit 114 includes an infrared camera for capturing an image of a corresponding eyeball and a gaze tracking unit for tracking the gaze of the corresponding eyeball. For example, EOG sensor, a coil system, and an eye tracking method using an infrared camera image can be used as the eye tracking unit. Accordingly, both the eyeball and the eyeball images of the testee are obtained by the eyeball monitoring module 112, and the obtained image and eyeball information are provided to the eyeball image display unit 140 and the storage unit 150 .

Although not shown, the HMD device for ophthalmologic examination 110 may include a gyro sensor to acquire and output rotation information of the subject's head. In addition, the HMD device 110 may include all the components and functions used in a general HMD.

The video data providing unit 120 provides the 3D virtual reality image required for the type of ophthalmologic examination to the image display unit 111 for inspection of the HMD device 110. The video data providing unit 120 is controlled through the control unit 130.

The control unit 130 controls the image providing unit 120 by being operated by an examiner. The inspector controls the image providing unit 120 using the control unit 130 to provide the necessary 3D virtual reality image to the eye examining HMD apparatus 110 according to the type of eye examination.

The eyeball image display unit 140 displays images of both eyes of the examinee and sight line information obtained by the eyeball monitoring module 112 of the HMD device for eyeball examination 110 to the examiner. The examiner is diagnosed using the captured image and eye line information of both eyes of the examinee, which is viewed through the eye image display unit 140. The eyeball image display unit 140 may display an image provided in real time from the eyeball monitoring module 112 of the HMD device for eyeball examination 110 but may also display basic test information stored in the storage unit 150 .

The storage unit 150 stores shot images and sight line information of both eyes of the examinee obtained by the eye monitor module 112 of the HMD device for eyeball examination 110. After the test, (140). ≪ / RTI >

Now, an ophthalmologic examination method using the ophthalmic examination system 100 described above will be described. An ophthalmologic examination method according to an embodiment of the present invention includes an image display step of displaying a three-dimensional virtual reality image for eye examination through an image display unit 111 for inspection of an HMD device for eyeball examination 110, An eyeball monitoring step for monitoring a state of an eyeball changing corresponding to a three-dimensional virtual reality image for eyeball displayed through the eyeball monitoring step, and a diagnostic step for analyzing and diagnosing an eyeball state acquired through the eyeball monitoring step. The ophthalmologic examination method using the ophthalmologic examination system 100 can be performed by monitoring the eye condition of the examinee while controlling the examiner in real time. Alternatively, the ophthalmologic examination method using the ophthalmologic examination system 100 may be displayed on the examination image display unit 111 without real- According to the instructions, the testee performs the test himself, and the examiner can check the result later. Hereinafter, the ophthalmologic examination method will be described in more detail according to a specific examination type.

Strabismus examination

In the image display step, the distant (6m) and near (33cm) target images are alternately displayed in the right eye and left eye at intervals of 2 to 3 seconds, and eye movement is observed through the eye monitoring step. In the case of strabismus, the motion of the eye is detected. When the motion of the eye is detected, the target image of the eye is moved to the point where the motion of the eye does not appear. When the motion of the eye is not observed, And the deviation time is measured. This is a clinical application of the alternate blindness test. When the visual acuity of one eye is very bad, it is necessary to look at a single light source, check the difference in the position of the reflex points on the cornea, and then move the light source to find the position of the light source have. This is a clinical application of the corneal reflex method.

It is possible to easily realize various target positions necessary for the strabismus examination and to observe the inclination of the HMD device 110 for ophthalmologic examination when the head is tilted and to examine the degree of coherent head tilting, ) Can also be measured.

In the conventional strabismus examination, a space of at least 6 m is required. However, according to the strap examination method of the present invention, the inspection space can be greatly reduced. In the conventional strabismus test, it is almost impossible to accurately measure the strabismus strabismus and strabismus strains having a diopter greater than 50 prism diopters, but the accuracy can be greatly improved according to the present invention. The corneal reflex point test is highly uncertain, but the test according to the present invention greatly improves accuracy.

In the strabismus examination, the observer may be measured by checking the movement of the eye according to the change of the position of the target in real time using the infrared camera, and the position of the target is moved according to the eye movement observed using the eye- The dead time may be measured automatically.

Binocular exercise test

When examining the movement of the eyes, it examines the nine directions of the front, top, bottom, left, right, upper left, lower left, right upper and lower right. In general tests, you see the target in the far front, then move the head to see the 9gaze direction, but the degree of turning the head is not consistent and the results are often inaccurate. VR can be used to realize a target at a certain position and monitor the position of the eye when viewing the target, so that the functional hyperactivity and the functional deterioration of each eye muscle can be discriminated. 9gaze can be measured in the direction of 9gaze using the deviation measurement method described in the strabismus examination while observing the target in the direction of the gaze.

 It is also possible to distinguish the position of each eye when the binocular position of the eye in 9-gaze is different (Lancaster red-green test implementation). It implements the right-eye view so that only the target signs of nine directions are visible, and the left-hand side displays only the indicators. At this time, the indicator allows the subject to move, and adjusts the target chart displayed as the right eye to overlap with the indicator displayed as the left eye. At this time, the position of the marker is shown as a result. Repeat the same test by changing the right eye and left eye.

Stereoscopic  inspection

If you display different images with different disparity in both eyes, you can feel it as a three-dimensional object, which can be implemented through VR, and you can create several different stereoscopic examinations with one device. The present stereoscopic vision test is a fixed target, but stereoscopic vision test using a moving target can also be implemented, and a new stereoscopic vision test can be developed.

Eye line examination

It shows a horizontal line image of a white line and a red line in each eye. If there is an eye line and the images of the two eyes are inconsistent and inclined, the examinee adjusts the image so that the image is changed to match. It becomes the degree of the eye line.

Diplopia examination

Show the points of different colors in both eyes and adjust them to overlap each other. 9gaze direction, and the test results will show the positional relationship of the points and the distance away.

Pupillary examination

The pupil that views the virtual reality is photographed and monitored with an infrared camera, and the size of the pupil is measured. The degree of pupil reflex (diameter, reaction rate) that occurs when alternating light stimuli are applied to both eyes can be graphed. In the case of relative afferent pupillary disorder when optic nerve abnormality occurs, it is possible to quantify the extent of light stimulation in both eyes .

Nystagmus test

Graph the amplitude and the degree of the nystagmus by targeting the movement of the eyeball watching the virtual reality.

Visual field examination

During the visual field examination, the patient should keep an eye on the front face continuously while observing the light in the peripheral visual field. If the position of the frontal view changes according to the movement of the eye through the use of the virtual reality and the eye tracking technique, that is, if the patient follows the eye such that the patient can not see the center of the test screen, Can be minimized. In addition, the head should be fixed and examined in an uncomfortable posture throughout the examination time. This difficulty is also solved, and the examination space can be reduced.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited thereto. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

100: Ophthalmology inspection system
110: HMD device
120:
130:
140: eyeball image display unit
150:

Claims (13)

An HMD device (110) for ophthalmologic examination worn by an examinee for ophthalmologic examination; And
And an image providing unit 120 for providing a three-dimensional virtual reality image for ophthalmologic examination to the HMD for ophthalmologic examination,
The HMD for ophthalmologic examination comprises an image display unit 111 for displaying an image of a subject to be examined on a 3D virtual reality image for ophthalmologic examination provided from the image providing unit, And an eye monitoring module (112) for monitoring a change in an eyeball corresponding to the image,
Wherein the eye monitoring module includes first and second eye monitoring units (113, 114) for independently monitoring each eye of the examinee, and each of the first and second eye monitoring units captures an image of a corresponding eyeball And an eye tracking unit for tracking a line of sight of the corresponding eyeball. delete The method according to claim 1,
And a control unit (130) for controlling the image providing unit. An ocular examination method using the ophthalmic examination system according to claim 1,
An image display step of displaying a 3D virtual reality image for eye examination through the image display unit; And
And an eyeball monitoring step of monitoring the state of the eyeball changing corresponding to the 3D virtual reality image for eyeball displayed through the image display step using the eyeball monitoring module. The method of claim 4,
Wherein the distance and near target images are alternately displayed on the right eye and the left eye in the image display step to perform strabismus examination. The method of claim 5,
When the eye movement is detected in the eyeball monitoring step, the image corresponding to a single eye is moved in the image display step to move to a point where the eye movement does not occur, and the distance difference of the binaural target is measured And measuring an angle of deviation. The method of claim 4,
In the eyeball monitoring step, the target image is implemented in the front, top, bottom, left, right, upper left, lower left, upper right, and lower right positions and the position of the corresponding eyeball is observed in the eyeball monitoring step, Wherein the method comprises the steps of: The method of claim 4,
Wherein the stereoscopic vision is checked by displaying another image having various disparities in both eyes in the image display step. The method of claim 4,
A horizontal line image is displayed on each eye in the image display step,
Further comprising the step of adjusting the image so as to match the test subject when the images of the two eyes are inconsistent with each other due to the presence of an ocular circuit, thereby performing the ocular circuit test. The method of claim 4,
And displaying a point of different color in each of the eyes in the image display step and performing a double check to adjust the overlapping of the two points. The method of claim 4,
Wherein the pupil size is measured in the eyeball monitoring step and a pupil examination is performed. The method of claim 4,
Wherein the nystagmus amplitude and the degree of nystagmus are measured in the eyeball monitoring step to perform a nystagmus test. The method of claim 4,
And a visual field inspection is performed by adjusting the image so that the eye follows the eye in the image display step.

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