Lancaster test system and method using HMD, and application using same

Abstract

Provided are a Lancaster test system and method using an HMD, and an application using same. A Lancaster test system using an HMD according to an embodiment of the present invention comprises: a display unit which has a screen independently output to each of two pupils of a body, and is formed to output a green visual target onto one pupil through the screen and output a red visual target onto the other pupil; a Lancaster test performing unit which performs a Lancaster test of the two pupils by using the visual targets, and outputs a Lancaster test result; and a test result output unit which outputs the Lancaster test result to a subject or a tester, wherein the Lancaster test includes a visual target position measurement test and a visual target alignment measurement test, and the Lancaster test result includes a visual target position measurement result and a visual target alignment measurement result.

Description

Lancaster inspection system, method, and application using HMD

[0001] The present invention relates to a Lancaster examination system and method using an HMD and an application using the same, and more particularly, to a Lancaster examination system and method using an HMD and an application using the same, which can more easily perform a Lancaster examination by outputting different indicators to each pupil of a subject through a head-mounted display and preventing the indicators output to each pupil from being recognized by other pupils, using an HDM device that can be worn on the human body by a user, such as a VR or MR device, and which can emit a screen to the pupils.

[0002] The Lancaster test is a useful test for identifying the paretic muscle in acute paralytic strabismus with normal retinal correspondence, and is also useful for assessing ocular rotation. The Lancaster test measures the angle of strabismus by applying different stimuli to the two pupils, asking the patient to match the two stimuli, and observing the results.

[0003] This Lancaster test was previously a subjective cover test that measured binocular, dissociative strabismus at a preset diagnostic location. It output a laser that generated red and green lines that projected lines 4 to 6 inches in length at a distance of 1 meter. The subject wore red glasses for the right eye and green glasses for the left eye, and then identified the mark and drew it on the test paper. In this method, even if the subject identified the mark normally, there may be cases where the mark was not drawn in the correct shape on the test paper, which may cause a problem of reducing the accuracy of the test results.

[0004] In order to solve the problems of the prior art as described above, one embodiment of the present invention provides a Lancaster examination system, method and application using the same using an HMD that can examine strabismus by having the examinee directly match the two stimuli by providing different stimuli to the two eyes, and can provide examination results with higher accuracy than the existing subjective cover test regardless of the examinee's skill level by performing a digital examination.

[0005] According to one aspect of the present invention for solving the above-described problem, a Lancaster test system using an HMD is provided. The Lancaster test system using the HMD includes a display unit having a screen that outputs independently to each of two pupils of the body, and configured to output a green target to one pupil and a red target to the other pupil through the screen; a Lancaster test performing unit that performs a Lancaster test on the two pupils using the target and outputs a Lancaster test result; and a test result output unit that outputs the Lancaster test result to a subject or an examiner, wherein the Lancaster test includes a target position measurement test and a target line measurement test, and the Lancaster test result includes a target position measurement result and a target line measurement result.

[0006] The display unit includes a display output module that independently outputs the green display or the red display to the two pupils; and a screen separation module that is formed to separate the display output modules so that the two pupils do not recognize different display signals; wherein the green display and the red display are formed in the same shape, and either display signal among the two displays can be output by being rotated by a preset angle.

[0007] The Lancaster test performing unit may include an inspection order determining module that sets inspection points for performing the Lancaster test and determines an inspection order of the inspection points; an eye position measurement inspection performing module that performs the eye position measurement inspection at the inspection points and outputs the eye position measurement result; and an eye line measurement inspection performing module that performs the eye line measurement inspection when the eye position measurement result is output at the inspection points and outputs the eye line measurement result.

[0008] The above-described inspection order determination module outputs the indicator at a preset distance from the subject, and creates a square with a side length of 2N and a square with a side length of 4N based on the center point of a plane formed based on the preset distance, and sets the vertex of the square and the point intersecting the xy-axis of the plane as the inspection point, and the inspection point can be formed for each pupil.

[0009] The above-mentioned target position measurement test execution module is configured to fix a secondary target, which is a target of the secondary pupil, which is not a subject of examination, and to allow the subject to directly move the primary target, which is a target of the primary pupil, which is a subject of examination, using an input device. When it is determined that the subject has moved the primary target so that the center point of the secondary target overlaps the center point of the primary target, and a completion signal is input through the input device, the target position measurement result including the position information of the primary target and the secondary target in the corresponding state can be output.

[0010] One of the above indicators may be formed in a cross (+) shape including the center point, and the other indicator may be formed in an X shape including the center point.

[0011] The above-mentioned target position measurement inspection performing module, if it is determined that both the target position measurement result and the target line measurement result are included at the inspection point, can check the inspection order and perform the target position measurement inspection at the next inspection point in the order to output the target position measurement result.

[0012] The above-mentioned optometry line measurement test execution module is configured to fix the sub-optometry, which is the optometry of the secondary pupil, which is not the subject of the test, and to allow the subject to directly rotate the main optometry, which is the optometry of the primary pupil, which is the subject of the test, using an input device. When it is determined that the subject has rotated the main optometry so that the sub-optometry and the primary optometry overlap, and a completion signal is input through the input device, the optometry line measurement result including angle information of the primary optometry and the secondary optometry in the corresponding state can be output.

[0013] The above test result output unit may include a completion confirmation module for confirming whether the Lancaster test has been completed; and a Lancaster test result output module for visualizing and outputting the Lancaster test result when it is confirmed that the Lancaster test has been completed.

[0014] The above completion confirmation module can check whether the Lancaster inspection result exists for all set inspection points, and if it does not exist for all inspection points, it can check that the Lancaster inspection is not completed and generate an inspection continuation signal so that the Lancaster inspection performing unit can continue performing the Lancaster inspection.

[0015] According to one aspect of the present invention, a Lancaster test method using an HMD is provided. The Lancaster test method using the HMD includes a display step configured to have a screen independently output to each of two pupils of a body using a display unit, and to output a green target to one pupil and a red target to the other pupil through the screen; a Lancaster test performing step of performing a Lancaster test on the two pupils using the target in a Lancaster test performing unit and outputting a Lancaster test result; and a test result output step of outputting the Lancaster test result to a subject or a tester using a test result output unit; wherein the Lancaster test includes a target position measurement test and a target line measurement test, and the Lancaster test result includes a target position measurement result and a target line measurement result.

[0016] According to one aspect of the present invention, an application utilizing a Lancaster test method using an HMD is provided. The application utilizing the Lancaster test method using the HMD comprises: a display step configured to have a screen independently output to each of two pupils of a body, and to output a green target to one pupil and a red target to the other pupil through the screen; a Lancaster test performing step of performing a Lancaster test on the two pupils using the target and outputting a Lancaster test result; and a test result output step of outputting the Lancaster test result to a subject or an examiner; and the Lancaster test includes a target position measurement test and a target line measurement test, and the Lancaster test result includes a target position measurement result and a target line measurement result.

[0017] The Lancaster test system, method and application using the same using an HMD according to one embodiment of the present invention can test strabismus by having the subject directly match the two stimuli by providing different stimuli to the two eyes, and can provide test results with higher accuracy than the existing subjective cover test regardless of the subject's skill level by performing a digitalized test.

[0018] FIG. 1 is a block diagram of a Lancaster inspection system using an HMD according to an embodiment of the present invention.

[0019] Figure 2 is a block diagram of the display unit of Figure 1.

[0020] Figure 3 is a block diagram of the Lancaster inspection performing unit of Figure 1.

[0021] Fig. 4 is a block diagram of the inspection result output unit of Fig. 1.

[0022] Figure 5 is a flowchart of a Lancaster inspection method using an HMD according to an embodiment of the present invention.

[0023] Figure 6 is a flowchart of step S13 of Figure 5.

[0024] Figure 7 is a flowchart of step S15 of Figure 5.

[0025] FIG. 8 is an exemplary diagram of a) a target used in a target position measurement test and b) a target used in a target line measurement test according to one embodiment of the present invention.

[0026] Figure 9 is an example of a screen on which test results are output according to one embodiment of the present invention.

[0027] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to exemplary drawings. When adding reference numerals to components in each drawing, identical components may have the same numerals as much as possible even if they are shown in different drawings. In addition, when describing the present embodiments, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the technical idea of ​​the present invention, the detailed description may be omitted. When "includes," "has," "consists of," etc. are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, it may include a case in which the plural is included unless specifically stated otherwise.

[0028] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present disclosure. These terms are only intended to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by the terms.

[0029] In a description of the positional relationship of components, when it is described that two or more components are "connected," "combined," or "connected," it should be understood that the two or more components may be directly "connected," "combined," or "connected," but that the two or more components may also be further "interposed" with another component to be "connected," "combined," or "connected." Here, the other component may be included in one or more of the two or more components that are "connected," "combined," or "connected" to each other.

[0030] In the description of the temporal flow relationship related to components, operation methods, or manufacturing methods, for example, when the temporal or flow relationship is described as “after”, “following”, “next to”, “before”, etc., it may also include cases where it is not continuous, unless “immediately” or “directly” is used.

[0031] Meanwhile, when numerical values ​​or corresponding information (e.g., levels, etc.) for components are mentioned, even without separate explicit description, the numerical values ​​or corresponding information may be interpreted as including an error range that may occur due to various factors (e.g., process factors, internal or external impact, noise, etc.).

[0032] FIG. 1 is a block diagram of a Lancaster inspection system using an HMD according to an embodiment of the present invention, FIG. 2 is a block diagram of a display unit of FIG. 1, FIG. 3 is a block diagram of a Lancaster inspection performing unit of FIG. 1, and FIG. 4 is a block diagram of a inspection result output unit of FIG. 1. Hereinafter, a Lancaster inspection system (1) using an HMD according to an embodiment of the present invention will be described in detail using FIGS. 1 to 4.

[0033] A Lancaster test system (1, hereinafter referred to as a test system for convenience) using an HMD according to one embodiment of the present invention can be configured to output indications to the two eyes (pupils) of a human body according to conditions using an HMD, and when a subject performs an examination on the output indications through an input device, output the results as Lancaster test results after the examination is completed.

[0034] To this end, an inspection system (1) according to one embodiment of the present invention can be formed including a display unit (11), a Lancaster inspection performing unit (13), and an inspection result output unit (15) as illustrated in FIG. 1.

[0035] In one embodiment of the present invention, a display unit (11) is formed to have a screen that outputs independently to each of the two pupils of the body, and to output a green indicator to one pupil and a red indicator to the other pupil through the screen. The display unit (11) may correspond to the display unit of the HMD in one embodiment of the present invention. The HMD is basically formed to have a screen (display unit) in front of the user's eyes to output a screen to the user, and to show the user desired information through the screen. Therefore, in one embodiment of the present invention, an indication for performing a Lancaster test can be output using the display unit (11), and this display unit (11) may be replaced with a display of the HMD if the conditions described below are included.

[0036] The display unit (11) of the present invention may include a time signal output module (111) and a screen separation module (113) as shown in FIG. 2.

[0037] The optotype output module (111) is configured to output green optotypes or red optotypes independently to the two pupils. The optotype output module (111) may be configured to output optotypes of different colors to the two pupils, respectively. Here, the green optotype and the red optotype are configured to have the same shape and size, and either optotype may be output by being rotated by a preset angle.

[0038] The screen separation module (113) is formed to separate the two pupils from each other by separating the two pupil output modules (111) so that the two pupils cannot recognize different pupils. The screen separation module (113) is preferably formed between the pupil output modules (111) so that the pupils, which are output to the left pupil or the right pupil, cannot be recognized by the right pupil or the left pupil, respectively.

[0039] Through this structure, each pupil can independently check only the screen injected into that pupil, and the pupil can be checked for abnormalities using the Lancaster test performing unit (13) described later.

[0040] The Lancaster test performing unit (13) is configured to perform the Lancaster test of two pupils using a target and output the Lancaster test results. Here, the Lancaster test includes a target position measurement test and a target rotation measurement test, and the Lancaster test results may include a target position measurement result and a target rotation measurement result.

[0041] Referring to FIG. 3, the Lancaster inspection performing unit (13) according to one embodiment of the present invention is formed to include an inspection order determination module (131), a sight position measurement inspection performing module (133), and a sight line measurement inspection performing module (135).

[0042] The inspection order determination module (131) is configured to set inspection points for performing the Lancaster inspection and determine the inspection order of the inspection points. Here, the inspection order determination module (131) outputs a test mark at a preset distance from the subject, and generates a square with a side length of 2N and a square with a side length of 4N based on the center point of a plane formed based on the preset distance, and sets the vertices of the squares and the points intersecting the xy axes of the plane as inspection points, and the inspection points can be formed for each pupil. Here, N can be the distance between the center point and one side of the square.

[0043] In one embodiment of the present invention, a target is output at a space 1 m away from the camera (z=1: 1 meter), and the target is output at locations 0.2 m and 0.4 m away from the center point of the xy plane at that location, thereby achieving the same effect as a conventional visual inspection.

[0044] The optotype position measurement inspection performing module (133) is configured to perform optotype position measurement inspection at an inspection point and output the optotype position measurement result. The optotype position measurement inspection performing module (133) is configured to fix the sub-optotype, which is the optotype of the secondary pupil, which is not the subject of inspection, and to allow the subject to directly move the main optotype, which is the optotype of the primary pupil, which is the subject of inspection, using an input device. When it is determined that the subject has moved the main optotype so that the center point of the sub-optotype overlaps the center point of the primary optotype and a completion signal is input through the input device, the optotype position measurement result including the position information of the primary optotype and the sub-optotype in the corresponding state is output.

[0045] In one embodiment of the present invention, one of the indicators may be formed in a cross (+) shape including a center point, and the other indicator may be formed in an X shape including a center point.

[0046] FIG. 8 is an exemplary diagram of a) a target used in a target position measurement test and b) a target used in a target line measurement test according to one embodiment of the present invention.

[0047] Referring to FIG. 8a, in one embodiment of the present invention, when measuring a position, if the same shape is used as a marker, the marker may appear misaligned if the line is off, so a cross and X-shaped marker are used, and the center point is marked large on the marker so that the center can be aligned.

[0048] In addition, the test point position measurement inspection execution module (133) can be configured to check the inspection order and perform a test point position measurement inspection at the next inspection point to output the test point position measurement result when it is determined that both the test point position measurement result and the test point line measurement result are included at the inspection point.

[0049] The optometry line measurement inspection performing module (135) is configured to perform an optometry line measurement inspection when an optometry position measurement result is output from an inspection point, and to output the optometry line measurement result. Here, the optometry line measurement inspection performing module (135) is configured to fix a sub-optometry mark, which is a mark of a secondary pupil that is not a subject of inspection, and to allow the subject to directly rotate the main optometry mark, which is a mark of a primary pupil that is a subject of inspection, using an input device, and when it is determined that the subject has rotated the main optometry mark so that the sub-optometry mark and the primary optometry mark overlap, and a completion signal is input through the input device, the optometry line measurement result including angle information of the primary optometry mark and the secondary optometry mark in the corresponding state can be output.

[0050] FIG. 8 is an exemplary diagram of a) a target used in a target position measurement test and b) a target used in a target line measurement test according to one embodiment of the present invention.

[0051] Referring to FIG. 8b, in one embodiment of the present invention, since the position of the time signal for which position measurement has been completed is used when measuring a line, if the line measurement test is performed in a state where the position measurement is misaligned, the line measurement may also proceed in a state where the position is misaligned.

[0052] The test result output unit (15) of the present invention can be configured to output the Lancaster test results to the subject or examiner. To this end, the test result output unit (15) according to one embodiment of the present invention is configured to include a completion confirmation module (151) and a Lancaster test result output module (153), as illustrated in FIG. 4.

[0053] The completion confirmation module (151) is configured to confirm whether the Lancaster test is completed. The completion confirmation module (151) confirms whether the Lancaster test results exist for all set test points, and if they do not exist for all test points, it confirms that the Lancaster test is not completed, and can generate a test continuation signal so that the Lancaster test execution unit continues to perform the Lancaster test.

[0054] The Lancaster test result output module (153) can be configured to visualize and output the Lancaster test result when it is confirmed that the Lancaster test is completed. Fig. 9 is an example of a screen on which test results are output according to an embodiment of the present invention. As in the example of Fig. 9, the Lancaster test result output module (153) of the present invention can display result data (OS) when a moving target is seen by the left eye and result data (OD) when a moving target is seen by the right eye. The OS and OD show the results of measuring the position and rotation of the target in the left eye and the results of measuring the position and rotation of the target in the right eye, respectively. In the example of Fig. 9, the measurement results of each target are shown for 9 test points provided in a square with each side of 80 cm based on the center point. In each graph, 1 grid means 5 cm. Here, since the positions of the fixed targets are -0.4, 0, 0.4, etc., when the corresponding values ​​are entered, the ratio for displaying them in the large square is calculated, and in the example of Fig. 9, each result value is set to be applied to the corresponding position by multiplying it by 400.

[0055] Meanwhile, as explained with the example of Fig. 9, the Lancaster test result output module (153) of the present invention can output the test result for one point as three objects. Here, the three objects can include the position of a fixed target, the position & inclination of a moving target, and the deviation value & inclination text of a moving target.

[0056] The position of the fixed target is indicated by a black dot, and the x-coordinate and y-coordinate values ​​of the fixed target in the result data are output.

[0057] The position and inclination of the moving target are indicated by green (red) bars, and are output using the x-coordinate, y-coordinate, and line values ​​of the moving target in the result data.

[0058] The deviation and inclination text of the moving target are displayed as text characters and are output using the x-coordinate of the moving target - the x-coordinate of the fixed target, the y-coordinate of the moving target - the y-coordinate of the fixed target, and the line value of the moving target of the result data.

[0059] Meanwhile, connecting lines between inspection points connect moving targets, and are connected by lines extending up, down, left, and right from the center and border of a large square. The points for connection can be numbered sequentially from the upper left to the right, and can have numbers from 0 to 8. In this case, point 0 can be connected to points 1 and 3, and point 4 can be connected to points 1, 3, 5, and 7. Furthermore, the connecting lines can also be expressed as the length and angle between two points.

[0060] If an inspection point goes outside the result screen, the point is not output, and the connecting line between the points is also not output. In one embodiment of the present invention, if a moving target (mark) deviates more than 75 cm from the center point, the target at that location is not output, and the connecting line can only be output up to a position where the x or y value is within 75 cm.

[0061] Meanwhile, FIGS. 5 to 7 illustrate a Lancaster inspection method using an HMD according to an embodiment of the present invention. FIG. 5 is a flowchart of a Lancaster inspection method using an HMD according to an embodiment of the present invention, FIG. 6 is a flowchart of step S13 of FIG. 5, and FIG. 7 is a flowchart of step S15 of FIG. 5. Hereinafter, a Lancaster inspection method (10) using an HMD according to an embodiment of the present invention will be described in detail, and for the convenience of explanation, the system of FIG. 1 will be described. However, this system is only one embodiment for the convenience of explanation, and the present invention may be performed using various systems or devices.

[0062] A Lancaster test method using an HMD according to one embodiment of the present invention (10, hereinafter referred to as a test method for convenience) can be configured to output a display according to conditions to both eyes (pupils) of a human body using an HMD, and when a subject performs a test on the output display through an input device, output the result as a Lancaster test result after the test is completed.

[0063] To this end, an inspection method (10) according to one embodiment of the present invention can be formed including a display step (S11), a Lancaster inspection performance step (S13), and an inspection result output step (S15), as illustrated in FIG. 5.

[0064] The display step (S11) of the present invention can independently output different indicators to two pupils using a design output module and a screen separation module.

[0065] The optotype output module is configured to output green or red optotypes independently to the two pupils. The optotype output module may be configured to output optotypes of different colors to the two pupils, respectively. Here, the green optotype and the red optotype are configured to have the same shape and size, and either optotype may be output rotated by a preset angle.

[0066] The screen separation module is formed to separate the two pupils from each other by separating the two pupil output modules, thereby preventing the two pupils from recognizing different pupils. The screen separation module is preferably formed between the pupil output modules, so that the pupils of the right and left pupils cannot see the pupils of the left and right pupils, respectively.

[0067] Through this structure, each pupil can independently check only the screen injected into that pupil, and the pupil can be checked for abnormalities using the Lancaster test execution step (S13) described later.

[0068] The Lancaster test performance step (S13) is configured to perform the Lancaster test of two pupils using a target in the Lancaster test performance unit and output the Lancaster test results. Here, the Lancaster test includes a target position measurement test and a target rotation measurement test, and the Lancaster test results may include a target position measurement result and a target rotation measurement result.

[0069] Referring to FIG. 6, the Lancaster test execution step (S13) according to one embodiment of the present invention is formed to include an inspection order determination step (S131), a sight position measurement test execution step (S133), and a sight line measurement test execution step (S135).

[0070] The inspection order determination step (S131) ​​is configured to set inspection points for performing the Lancaster test and determine the inspection order of the inspection points. Here, the inspection order determination step (S131) ​​outputs a test mark at a preset distance from the subject, and generates a square with a side length of 2N and a square with a side length of 4N based on the center point of a plane formed based on the preset distance, and sets the vertices of the squares and the points intersecting the xy axes of the plane as inspection points, and the inspection points can be formed for each pupil. Here, N may be the distance between the center point and one side of the square.

[0071] In one embodiment of the present invention, a target is output at a space 1 m away from the camera (z=1: 1 meter), and the target is output at locations 0.2 m and 0.4 m away from the center point of the xy plane at that location, thereby achieving the same effect as a conventional visual inspection.

[0072] The step of performing the optotype position measurement test (S133) is configured to perform the optotype position measurement test at the test point and output the optotype position measurement result. The step of performing the optotype position measurement test (S133) is configured to fix the sub-optotype, which is the optotype of the secondary pupil, which is not the subject of the test, and to allow the subject to directly move the main optotype, which is the optotype of the primary pupil, which is the subject of the test, using an input device. When it is determined that the subject has moved the main optotype so that the center point of the sub-optotype overlaps the center point of the primary optotype, and a completion signal is input through the input device, the step of performing the optotype position measurement including the position information of the primary optotype and the sub-optotype in the corresponding state is configured to output the optotype position measurement result.

[0073] In one embodiment of the present invention, one of the indicators may be formed in a cross (+) shape including a center point, and the other indicator may be formed in an X shape including a center point.

[0074] FIG. 8 is an exemplary diagram of a) a target used in a target position measurement test and b) a target used in a target line measurement test according to one embodiment of the present invention.

[0075] Referring to FIG. 8a, in one embodiment of the present invention, when measuring a position, if the same shape is used as a marker, the marker may appear misaligned if the line is off, so a cross and X-shaped marker are used, and the center point is marked large on the marker so that the center can be aligned.

[0076] In addition, the step of performing the sight position measurement inspection (S133) can be configured to check the inspection order and perform the sight position measurement inspection at the next inspection point to output the sight position measurement result if it is determined that both the sight position measurement result and the sight line measurement result are included at the inspection point.

[0077] The step of performing the optometry line measurement test (S135) is configured to perform the optometry line measurement test when the optometry position measurement result is output from the test point, and output the optometry line measurement result. Here, the step of performing the optometry line measurement test (S135) is configured to fix the sub-optometry, which is the optometry of the secondary pupil, which is not the subject of the test, and to allow the subject to directly rotate the main optometry, which is the optometry of the primary pupil, which is the subject of the test, using an input device, and when it is determined that the subject has rotated the main optometry so that the sub-optometry and the primary optometry overlap, and a completion signal is input through the input device, the step of performing the optometry line measurement including angle information of the primary optometry and the secondary optometry in the corresponding state can be configured to output.

[0078] FIG. 8 is an exemplary diagram of a) a target used in a target position measurement test and b) a target used in a target line measurement test according to one embodiment of the present invention.

[0079] Referring to FIG. 8b, in one embodiment of the present invention, since the position of the time signal for which position measurement has been completed is used when measuring a line, if the line measurement inspection is performed in a state where the position measurement is misaligned, the line measurement may also proceed in a state where the position is misaligned.

[0080] The test result output step (S15) of the present invention can be configured to output the Lancaster test results to the examinee or examiner using the test result output unit. To this end, the test result output step (S15) according to one embodiment of the present invention is configured to include a completion confirmation step (S151) and a Lancaster test result output step (S153), as illustrated in FIG. 7.

[0081] The completion check step (S151) is configured to check whether the Lancaster test is completed. The completion check step (S151) checks whether the Lancaster test results exist for all set test points, and if they do not exist for all test points, the Lancaster test is determined to be incomplete, and the Lancaster test execution unit can generate a test continuation signal to continue performing the Lancaster test.

[0082] The Lancaster test result output step (S153) may be configured to visualize and output the Lancaster test result when it is confirmed that the Lancaster test is completed. Fig. 9 is an example of a screen on which the test result is output according to an embodiment of the present invention. As shown in the example of Fig. 9, the Lancaster test result output step (S153) of the present invention may display result data (OS) when a moving target is seen by the left eye and result data (OD) when a moving target is seen by the right eye. The OS and OD show the results of measuring the position and rotation of the target in the left eye and the results of measuring the position and rotation of the target in the right eye, respectively. In the example of Fig. 9, the measurement results of each target are shown for 9 test points provided in a square with each side of 80 cm based on the center point. In each graph, 1 grid means 5 cm. Here, since the positions of the fixed targets are -0.4, 0, 0.4, etc., when the corresponding values ​​are entered, the ratio for displaying them in the large square is calculated, and in the example of Fig. 9, each result value is set to be applied to the corresponding position by multiplying it by 400.

[0083] Meanwhile, as explained with the example of Fig. 9, the Lancaster test result output step (S153) of the present invention can output the test result for one point as three objects. Here, the three objects can include the position of a fixed target, the position & inclination of a moving target, and the deviation value & inclination text of the moving target.

[0084] The position of the fixed target is indicated by a black dot, and the x-coordinate and y-coordinate values ​​of the fixed target in the result data are output.

[0085] The position and inclination of the moving target are indicated by green (red) bars, and are output using the x-coordinate, y-coordinate, and line values ​​of the moving target in the result data.

[0086] The deviation and inclination text of the moving target are displayed as text characters and are output using the x-coordinate of the moving target - the x-coordinate of the fixed target, the y-coordinate of the moving target - the y-coordinate of the fixed target, and the line value of the moving target of the result data.

[0087] Meanwhile, connecting lines between inspection points connect moving targets, and are connected by lines extending up, down, left, and right from the center and border of a large square. The points for connection can be numbered sequentially from the upper left to the right, and can have numbers from 0 to 8. In this case, point 0 can be connected to points 1 and 3, and point 4 can be connected to points 1, 3, 5, and 7. Furthermore, the connecting lines can also be expressed as the length and angle between two points.

[0088] If an inspection point goes outside the result screen, the point is not output, and the connecting line between the points is also not output. In one embodiment of the present invention, if a moving target (mark) deviates more than 75 cm from the center point, the target at that location is not output, and the connecting line can only be output up to a position where the x or y value is within 75 cm.

[0089] The Lancaster inspection method using an HMD according to the embodiments of the present invention described above can be implemented as an application (computer program) stored in a storage medium of a computer.

[0090] Here, the computer may include a Lancaster inspection system using an HMD.

[0091] The computer's operating system may be an operating system such as Windows or Macintosh, which is installed on general PCs such as desktops and laptops, or a mobile-only operating system such as iOS or Android, which is installed on mobile devices such as smartphones and tablet PCs.

[0092] The Lancaster inspection method using the HMD according to the embodiments of the present invention described above may be implemented as an application (i.e., a computer program) that is installed by default on a computer or installed by a user, and may be stored (recorded) on a computer-readable storage medium.

[0093] An application (computer program) that implements a Lancaster test method using an HMD according to embodiments of the present invention and is stored and executed in a storage medium of a computer may perform a display step in which a screen is independently output to each of two pupils of the body, and a green indicator is output to one pupil and a red indicator is output to the other pupil through the screen; a Lancaster test performing step in which a Lancaster test is performed on the two pupils using the indicators and a Lancaster test result is output; and a test result output step in which the Lancaster test result is output to a subject or a tester.

[0094] In this way, in order for a computer to read a program recorded on a storage medium and execute the Lancaster inspection method using an HMD according to the embodiments implemented as a program, the application (application program) described above may include code (Code) coded in a computer language such as C, C++, JAVA, or machine language that can be read by a computer processor (CPU).

[0095] Such code may include functional code related to functions defining the aforementioned functions, and may also include control code related to execution procedures required for the computer's processor to execute the aforementioned functions according to a predetermined procedure.

[0096] Additionally, such code may further include memory reference related code regarding where in the internal or external memory of the computer the additional information or media required for the computer's processor to execute the aforementioned functions should be referenced.

[0097] Additionally, if the computer's processor needs to communicate with any other computer or server, etc., located remotely in order to execute the functions described above, the code may further include communication-related code regarding how the computer's processor should communicate with any other computer or server, etc. located remotely, using the computer's communication module (e.g., wired and / or wireless communication module), and what information or media should be sent and received during the communication.

[0098] In addition, the functional program for implementing the present embodiments and the code and code segments related thereto may be easily inferred or changed by programmers in the technical field to which the present invention pertains, taking into consideration the system environment of the computer that reads the storage medium and executes the program.

[0099] Additionally, a computer-readable storage medium recording the aforementioned program can be distributed across network-connected computer systems, allowing the computer-readable code to be stored and executed in a distributed manner. In this case, one or more of the multiple distributed computers can execute some of the functions described above and transmit the results to one or more of the other distributed computers. The computer receiving the results can also execute some of the functions described above and provide the results to the other distributed computers.

[0100] As described above, a computer-readable storage medium that records an application for executing the Lancaster inspection method using an HMD according to embodiments of the present invention may include, for example, a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical media storage device, etc.

[0101] In addition, a computer-readable storage medium recording an application, which is a program for executing a Lancaster inspection method using an HMD according to embodiments of the present invention, may be a storage medium (e.g., a hard disk, etc.) included in an application provider server including an application store server, a web server related to an application or a corresponding service, or the application provider server itself, or another computer recording the program or its storage medium.

[0102] A computer capable of reading a storage medium recording an application program for executing a Lancaster inspection method using an HMD according to embodiments of the present invention may include not only general PCs such as general desktops or laptops, but also mobile terminals such as smart phones, tablet PCs, PDAs (Personal Digital Assistants), and mobile communication terminals, and should be interpreted as all devices capable of computing.

[0103] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate, rather than limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

[0104] The present invention relates to a Lancaster examination system and method using an HMD and an application using the same, and more particularly, to a Lancaster examination system and method using an HMD and an application using the same, which can more easily perform a Lancaster examination by outputting different indicators to each pupil of a subject through a head-mounted display and preventing the indicators output to each pupil from being recognized by other pupils, using an HDM device that can be worn on the human body by a user, such as a VR or MR device, and which can emit a screen to the pupils.

Claims

1. A display unit having a screen that outputs independently to each of the two pupils of the body, and formed to output a green indicator to one pupil and a red indicator to the other pupil through the screen; A Lancaster test performing unit that performs the Lancaster test of the two pupils using the above table and outputs the Lancaster test results; and Includes a test result output unit that outputs the Lancaster test results to the subject or the tester; The above Lancaster test A Lancaster test system using an HMD, comprising a target position measurement test and a target circuit measurement test, wherein the Lancaster test results include a target position measurement result and a target circuit measurement result.

2. In paragraph 1, The above display part, A time signal output module that outputs the green time signal or the red time signal independently to the two pupils; and A screen separation module formed to separate the above time signal output modules so that the two pupils do not recognize different time signals; A Lancaster examination system using an HMD in which the green and red indicators are formed in the same shape and one of the two indicators is output by being rotated by a preset angle.

3. In paragraph 1, The Lancaster Inspection Department above, An inspection order determining module that sets inspection points for performing the above Lancaster inspection and determines the inspection order of the inspection points; A test point position measurement inspection performing module that performs the test point position measurement inspection at the above test point and outputs the test point position measurement result; and A Lancaster inspection system using an HMD, comprising: a target line measurement inspection performing module that performs the target line measurement inspection when the target position measurement result is output from the above inspection point, and outputs the target line measurement result; 4. In paragraph 3, The above inspection order determination module is, A Lancaster examination system using an HMD, wherein the above indicator is output at a preset distance from the subject, a square with side lengths of 2N and a square with side lengths of 4N are generated based on the center point of a plane formed based on the preset distance, and the vertices of the squares and the points intersecting the xy axes of the plane are set as the examination points, and the examination points are respectively formed for each pupil.

5. In paragraph 3, The above-mentioned time signal position measurement inspection performing module is, A Lancaster examination system using an HMD, which is configured to fix a secondary ophthalmologist, which is a visual marker of a secondary pupil that is not a subject of examination, and to allow the examinee to directly move the primary ophthalmologist, which is a visual marker of the primary pupil that is a subject of examination, using an input device, and when it is determined that the examinee has moved the primary ophthalmologist to overlap the center point of the secondary ophthalmologist with the center point of the primary ophthalmologist and a completion signal is input through the input device, the system outputs the ophthalmologist position measurement result including the position information of the primary ophthalmologist and the secondary ophthalmologist in the corresponding state.

6. In paragraph 5, A Lancaster inspection system using an HMD, wherein one of the above indicators is formed in a cross (+) shape including the center point, and the other indicator is formed in an X (X) shape including the center point.

7. In paragraph 5, The above-mentioned time signal position measurement inspection performing module is, A Lancaster inspection system using an HMD that checks the inspection order, performs the eye position measurement inspection at the next inspection point in the order, and outputs the eye position measurement result, if it is determined that both the eye position measurement result and the eye line measurement result are included at the above inspection point.

8. In paragraph 3, The above time table circuit measurement inspection execution module is, A Lancaster examination system using an HMD, which is configured such that the subject can directly rotate the primary target, which is the target of the primary pupil, which is the target pupil of the examination, by using an input device, while fixing the secondary target, which is the target of the secondary pupil, which is not the subject of the examination, and when it is determined that the subject has rotated the primary target so that the secondary target and the primary target overlap and a completion signal is input through the input device, outputs the target rotation measurement result including angle information of the primary target and the secondary target in the corresponding state.

9. In paragraph 1, The above test result output section is, A completion check module that checks whether the above Lancaster test has been completed; and A Lancaster test system using an HMD, including a Lancaster test result output module that visualizes and outputs the Lancaster test results when it is confirmed that the above Lancaster test is completed.

10. In paragraph 9, The above completion confirmation module is, A Lancaster inspection system using an HMD that checks whether the Lancaster inspection result exists for all set inspection points, and if it does not exist for all inspection points, determines that the Lancaster inspection is not completed, and generates an inspection continuation signal so that the Lancaster inspection performing unit continues to perform the Lancaster inspection.

11. A display step having a screen that outputs independently to each of the two pupils of the body using a display unit, and configured to output a green indicator to one pupil and a red indicator to the other pupil through the screen; A Lancaster test performing step of performing the Lancaster test of the two pupils using the above chart in the Lancaster test performing unit and outputting the Lancaster test results; and A test result output step for outputting the Lancaster test result to a subject or a tester using a test result output section; The above Lancaster test A Lancaster test method using an HMD, comprising a target position measurement test and a target circuit measurement test, wherein the Lancaster test result includes a target position measurement result and a target circuit measurement result.

12. A display step having a screen that outputs independently to each of the two pupils of the body, and configured to output a green indicator to one pupil and a red indicator to the other pupil through the screen; A Lancaster test performing step of performing the Lancaster test of the two pupils using the above table and outputting the Lancaster test results; and To perform the test result output step of outputting the above Lancaster test result to the subject or the tester; stored in the storage medium of the digital terminal, The above Lancaster test An application comprising a test of a target position measurement and a test of a target circuit measurement, wherein the Lancaster test results include a test of a target position measurement and a test of a target circuit measurement.

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