WO2015190660A1 - 자동 시력 검사기 및 자동 시력 검사 방법 - Google Patents
자동 시력 검사기 및 자동 시력 검사 방법 Download PDFInfo
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- WO2015190660A1 WO2015190660A1 PCT/KR2014/012040 KR2014012040W WO2015190660A1 WO 2015190660 A1 WO2015190660 A1 WO 2015190660A1 KR 2014012040 W KR2014012040 W KR 2014012040W WO 2015190660 A1 WO2015190660 A1 WO 2015190660A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
- A61B3/0033—Operational features thereof characterised by user input arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
- A61B3/0041—Operational features thereof characterised by display arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
Definitions
- the present invention relates to an automatic eyesight tester and an automatic eyesight test method, and more particularly, to an automatic eyesight tester and an automatic eyesight test method enabling accurate eyesight test with a simple user input by utilizing a new eyesight table different from an existing eyesight table.
- Visual acuity examinations are done in ophthalmology, opticians, and health screenings. Visual acuity examinations are usually performed by an optometrist or nurse in a room with an illumination table at the height of the subject's eye, with the illumination of the visual acuity table at 200 lux in an evenly lit room. The subject looks at the eyesight table in front of a certain distance (5m), covers the left eye with a blindfold, and measures the eyesight of the right eye, and then measures the left eye in the same manner. Visually, the smaller number of readings from the larger indication is read and the corresponding number of minimum readings (or indicators) that can be read becomes the vision.
- Existing visual acuity test is basically to receive the guidance of the optician or nurse in order to test the eyesight of the subject, and the vision test is performed by notifying the optician, etc. in response to the indications directed by the optician or nurse.
- Existing visual acuity tables may include Randolph ring or Snellen targets, which require minimal human behavior or intellectual ability. For example, when using the Landolt Ring Spectrum, the Landolt Ring is broken in the 360 degree direction, so that accurate responses cannot be obtained from infants or the elderly who are inexperienced or lacking intellectual ability, and thus the accuracy is not guaranteed. Accordingly, a separate visual acuity chart should be provided for infants and others.
- the present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic vision tester and an automatic vision test method that enables a unified vision test regardless of the type of subjects such as children, the elderly and the like. .
- an object of the present invention is to provide an automatic eye tester and an automatic eye test method for automatically performing an eye test according to a simple user input.
- an object of the present invention is to provide an automatic vision tester and an automatic vision test method that can simultaneously perform a long-distance and short-range visual inspection.
- an object of the present invention is to provide an automatic vision tester and an automatic vision test method for efficiently performing an eye test using a simple user input under a limited input / output environment of an automated device.
- Another object of the present invention is to provide an automatic visual acuity tester and an automatic visual acuity test method, which can reduce a measurement deviation of an inspector and reduce labor costs and examination time required for a visual acuity test.
- the automatic visual acuity analyzer includes a display unit for displaying a target image including a first figure represented by a line and a second figure represented by a line inside the line of the first figure. And an input unit configured to receive a user input in response to the target image, wherein an interval between a first point of the line representing the first figure and a corresponding point of the line representing the second figure is equal to a second point of the line representing the first figure; It is narrower than the space
- the automatic visual acuity detector may further include a controller configured to generate a target image including a first figure and a second figure, wherein the controller is configured to generate the first figure and the first figure represented by the line in response to a user input received through the input unit.
- a subsequent figure image including a second figure represented by a line inside the line and different from the previously generated target image, and outputting the generated subsequent target image to the display unit, and generating the first figure and first image of the previously generated target image
- the size of the two figures and the size of the first figure and the second figure of the subsequent target image are different, and the sizes of the first figure and the second figure of the subsequent target image are determined by user input.
- the previously generated target image corresponds to the first visual acuity value and the subsequent target image corresponds to a second visual acuity value different from the first visual acuity value.
- the automatic vision tester further includes an optical unit including a plurality of lenses and an output unit for outputting an eye test result
- the control unit uses a plurality of lenses of the optical unit to link the user's input in the long-distance or near-field mode with a user input. And outputs the visual acuity test result to the output unit.
- first figure and the second figure are ring-shaped figures, and the controller outputs only the subsequent target image to the display in response to a user input, and the user input corresponds to a single target image corresponding to the first visual acuity value. It is a response to the shape of the target image visually recognized by the user.
- the automatic vision test method for achieving the above object is to (a) display a target image including a first figure represented by a line (line) and a second figure represented by a line inside the line of the first figure; And (b) receiving a user input in response to the displayed target image, wherein an interval between a first point of the line representing the first figure and a corresponding point of the line representing the second figure is determined by the first figure.
- the distance between the second point of the line to represent and the corresponding point of the line to represent the second figure is narrower.
- the automatic visual inspection method further comprises the step of (c) displaying a target image including a first figure represented by a line in response to a user input and a second figure represented by a line inside the line of the first figure;
- the size of the first figure and the second figure included in the target image of step (a) and the size of the first figure and the second figure included in the target image of step (c) are different from each other.
- the sizes of the first figure and the second figure are determined by user input.
- the target image of step (a) also corresponds to the first visual acuity value and the target image of step (c) corresponds to a second visual acuity value that is different from the first visual acuity value.
- the user input is also a response to the target image visually recognized by the user with respect to the first point of the line representing the first figure and the corresponding point of the line of the second figure.
- the user input may be an input indicating whether the first figure and the second figure visually overlap with respect to the point corresponding to the first point, or an input indicating a direction recognized by the user with respect to the point corresponding to the first point.
- first figure and the second figure are ring-type figures, and step (a) displays only a single target image corresponding to the first visual acuity value, and step (c) shows a single visual image corresponding to the second visual acuity value. And displays only the target image of, and step (b) receives as a user input a response to the shape of the target image that the user visually recognizes with respect to a single target image corresponding to the first visual acuity value.
- the automatic vision tester and the automatic vision test method according to the present invention as described above have the effect of enabling a unified vision test regardless of the type of subject, such as children, the elderly and the like.
- the automatic vision tester and the automatic vision test method according to the present invention as described above has the effect of automatically performing a visual inspection according to a simple user input.
- the automatic vision tester and the automatic vision test method according to the present invention as described above has the effect of allowing the long-distance and near vision at the same time.
- the automatic visual inspection device and the automatic visual inspection method according to the present invention has the effect of efficiently performing the visual inspection with a simple user input by using a limited timetable under the limited input and output environment of the automated device.
- the automatic visual inspection device and the automatic visual inspection method according to the present invention can reduce the measurement deviation of the examiner and has the effect of reducing the labor cost and examination time required for visual inspection.
- FIG. 1 is a diagram illustrating an exemplary appearance of an automatic visual inspection machine.
- FIG. 2 illustrates an exemplary block diagram of an automatic vision tester.
- FIG. 3 is a diagram illustrating an exemplary target image used in the present invention and displayed through a display unit.
- FIG. 4 is a diagram illustrating an exemplary configuration inside an automatic visual acuity analyzer for visual acuity in a circle / near mode.
- FIG. 5 is a diagram illustrating a flowchart for visual inspection.
- FIG. 6 is a flowchart illustrating a binocular, left or right eye visual acuity using a target according to the present invention and through a simple user input.
- sensing unit 111 display unit
- control unit 119 connection
- FIG. 1 is a diagram illustrating an exemplary appearance of an automatic vision tester 100.
- the automatic eye tester 100 includes a jaw holder and an eye test stand, and includes a direction stick and one or more buttons.
- the direction stick or one particular button may be omitted depending on the variant.
- the jaw holder is a device for seating the jaw of the face during the vision test, and the eye test stand is configured to accommodate both eyes and is referred to as one eye ('monocular') through the eye test stand. ) Or an image that is exposed to both eyes (also called 'binocular') is displayed.
- the direction stick is configured to indicate a particular direction of the image displayed via the vision test table.
- the direction stick outputs a signal indicating the left, right, up, and down directions to the automatic vision analyzer 100.
- the button is used to input the subject's response to the displayed image in the same way as the direction stick.
- the button is used to indicate the shape of the figures of the image visually recognized by the subject to the automatic vision inspector 100.
- one button is used by the subject to indicate whether the figures of the image overlap, and the other button is used by the subject to indicate that the figures of the image are separated (not overlapped). It is not necessary to have two or more buttons, and a single button may indicate the perception form of the figure shown in these images.
- buttons can be used for the visual acuity test, only the direction sticks can be used, or both can be used. Depending on the type of vision test used, the buttons or direction sticks may be omitted.
- the button is a push type button or a touch type button.
- FIG. 2 is a diagram illustrating an exemplary block diagram of an automatic vision tester 100.
- the automatic eye tester 100 includes an input unit 101, a storage unit 103, an external interface unit 105, an output unit 107, a sensing unit 109, a display unit 111, and an illumination unit 113. ), An optical unit 115, a control unit 117, and a connection unit 119. Some of the blocks included in FIG. 2 may be omitted, and other blocks not included may be further included in this block diagram.
- the input unit 101 receives a user input from the subject.
- the input unit 101 includes a direction stick, one or more buttons, receives an input by a subject from the direction stick and / or a button, and outputs the input to the control unit 117.
- the user input received through the input unit 101 is used to indicate the shape of the image recognized by the subject in response to the image displayed through the vision test table.
- the input unit 101 may also receive an input indicating setting data by an optometrist or a nurse who performs an eye test through the automatic eye tester 100.
- the input unit 101 may include a setting switch in addition to a button or a directional stick used by a subject, and may be used in a remote mode (for example, 5 m) or a near mode (for example, 50 cm) used for visual inspection according to the setting value of the setting switch. To be set.
- the storage unit 103 stores various data and programs.
- the storage unit 103 includes a mass storage medium such as a volatile memory, a nonvolatile memory, and / or a hard disk.
- the storage unit 103 is used in the automatic vision tester 100 and includes the data of the visual acuity table according to the present invention, and includes a program for performing a visual acuity test using the visual acuity data and the result of the visual acuity test.
- the data representing the visual acuity table consists of visual image values and corresponding visual image.
- the data of the visual acuity table includes a plurality of visual acuity values and corresponding target images, and the visual acuity of the seventh, nineth, or thirteenth stages can be examined according to the number.
- the target images corresponding to each stage preferably include two figures, and the size of the figures of one particular stage is different from the size of the figures of the images of the other stage.
- the eyesight test is performed by the automatic eyesight checker 100, and the eyesight test result is output.
- the figure shape of the displayed image will be described with reference to FIG. 3.
- the target image stored in the storage 103 does not necessarily need to be represented or stored as color data (for example, RGB, YUV or black and white data).
- the target image of the storage unit 103 is sufficient to generate data to be output through the display unit 111. Therefore, the target image includes color data to be output to the display 111 or data capable of generating color data.
- the external interface 105 is an interface for interworking with a device external to the automatic vision analyzer 100.
- the external interface 105 may perform short-range communication for interworking with a remote controller, a fax machine, a personal PC, and the like.
- the external interface 105 includes an interface for an infrared remote control signal or a communication interface for Ethernet, Bluetooth, or fax, and transmits a vision test result or receives control data according to the control of the controller 117 so that the controller 117 receives the control data.
- the operation according to the control data can be performed.
- the output unit 107 outputs the visual acuity test result determined by the control unit 117.
- the output unit 107 may be a display module such as a liquid crystal display (LCD), a light emitting diode (LED), or the like, a printer module that may be embedded in a case (mechanism) of the automatic vision analyzer 100, and / or an external printer. It includes an interface for interfacing.
- the output unit 107 may further include a speaker.
- the speaker may not only output a voice indicating the visual acuity test result, but may also output a guide comment for guiding the visual acuity test of the subject under the control of the controller 117.
- the sensing unit 109 recognizes the subject of the vision test. According to the subject's recognition by the sensing unit 109, the vision test may be started by the controller 117.
- the sensing unit 109 is a pressure sensor for detecting the pressure applied to the jaw holder, a temperature sensor for detecting the body temperature of the subject detected by the vision test table, an infrared sensor for recognizing the subject, the pressure applied to the jaw holder And a circuit for outputting a changing signal.
- the signal sensed by the sensing unit 109 is output to the control unit 117 and the control unit 117 may start an eye test.
- the display 111 displays an image.
- the display 111 includes one or more display modules.
- the display unit 111 includes two display modules.
- One display module (hereinafter referred to as the left eye display module) displays an image for checking the vision of the left eye (hereinafter referred to as the left eye) and the other display module (hereinafter referred to as the right eye display module). Displays an image for examining the vision of the right eye (hereinafter also referred to as 'right eye').
- a corresponding left eye display module is used to check left eye vision
- a corresponding right eye display module is used to check right eye vision
- both display modules are used to test binocular vision.
- the display module may be an LCD module or an LED module.
- the display module receives image data from the controller 117 through the promised interface and displays the received image data.
- FIG. 3 is a diagram illustrating an exemplary target image used in the present invention and displayed through the display 111.
- the target image is stored in the storage unit 103.
- Each target corresponds to a specific visual acuity value.
- 3 shows four images corresponding to specific visual acuity values.
- One of the four images is displayed through the display module of the display 111.
- the target image includes two figures.
- the two figures are the same shape.
- the two figures are, for example, rectangular, triangular, elliptical, and ring (circular) types. Each figure is represented by a line.
- An image including two figures is displayed on the display 111.
- one of the two figures is larger in size than the other, and one figure (hereinafter, referred to as an "outer figure") is called another figure (hereinafter, referred to as an "inside figure").
- an outer figure is called another figure (hereinafter, referred to as an "inside figure”).
- Inside the line the distance between one point of the line representing the outline figure and the corresponding point of the line of the outline figure is sized (length) according to the corresponding visual acuity value and is different for each point.
- the interval between corresponding points of the internal figure at a specific point is the narrowest (see 1 in FIGS. 3A to 3D, hereinafter ' Also referred to as 'first point', the spacing between corresponding points of the internal figure at different points (see (a) and (c) of FIG. 3) is the widest.
- the distance between the other points is wider than the distance between at least the narrowest point (first point).
- the shape of the interval between points may vary depending on the shape of the figure, but at least the interval at the first point is designated according to the corresponding visual acuity value and is configured to be narrower than the distance between other points (hereinafter also referred to as 'second point'). . Accordingly, the present invention is configured so that the eyesight can be examined by user recognition of the distance at the first point.
- the interval at the first point in the figure corresponding to visual acuity value 1.5 is designated so that a subject having a resolution of visual acuity value 1.5 can recognize the interval
- the interval at the first point corresponding to visual acuity value 0.1 is The interval is specified so that a subject with a resolution of visual acuity of 0.1 can visually recognize it.
- the reaction of the examinee may be simplified. Since the size of the target image is different according to each visual acuity value, the shape of the image between the shapes recognized by the subject's eyes is different.
- Vision is the ability to distinguish objects, and vision has the resolution to recognize two points apart from the amount of light perceived by the eye according to the criteria for classification.
- the target can measure the latter resolution.
- the subject may recognize that the first point and the corresponding point overlap or may be recognized as being separated.
- the present invention performs the visual acuity test utilizing the point-to-point resolution of the subject.
- the subject does not need to specify a direction such as a randold ring, but simply indicates whether they are overlapped or separated.
- the target image according to the present invention provides a structure that can further display the direction of the first point and the corresponding point. Accordingly, a simple user interface can be provided to infants or children, and there is no need to provide a separate schedule.
- the distance between the corresponding point of the inner figure corresponding to the first point of the outer figure and the distance between the corresponding point of the inner figure corresponding to the second point of the outer figure is different. It need not be limited to this, and the size of the gap at the first point and the gap at the second point may be the same.
- the spacing (at size) at least at the first point is set to be able to check the resolution of the eye.
- the automatic visual acuity tester 100 may perform the visual acuity test by receiving a user response indicating whether only one figure or two figures are visible using only a button without using a direction stick. It may be.
- the display 111 displays an image including two figures represented by lines.
- the lighting unit 113 outputs light to the display unit 111.
- the lighting unit 113 may include a plurality of white LEDs to maintain a constant brightness with respect to the image displayed on the display module of the display unit 111.
- the optical unit 115 may include one or more lenses and a reflector to allow the eye of the examinee to recognize an image of the display 111.
- the optical unit 115 preferably includes two lenses, and one lens is superimposed on another lens according to the vision test mode set by the controller 117 to allow the subject to recognize the target image.
- FIG. 4 is a diagram illustrating an exemplary configuration inside the automatic vision inspector 100 for visual inspection in a circle / near mode.
- FIG. 4A illustrates the structure of the optical unit 115 for visual inspection in the remote mode
- FIG. 4B illustrates the structure of the optical unit 115 for visual inspection in the near mode.
- the eye perceives light of an image displayed on the display 111 through two lenses and through a reflector.
- the superimposition of the two lenses allows the subject to perceive a far-field target image.
- the remote mode provides a vision test environment, such as a subject viewing an eye chart at a distance of 5 m, for example.
- FIG. 4 (b) shows the structure of the optical unit 115 for visual inspection in the short range mode, in which only one lens is positioned between the eye and the reflector of the subject and the other lens according to the setting of the setting switch.
- the eye of the subject through the optical unit 115 is positioned outside the optical path for recognizing the target image.
- the near-field mode of FIG. 4B provides an eye examination environment, such as a subject viewing an eye table at a distance of 50 cm, for example.
- the controller 117 controls the respective blocks of the automatic vision analyzer 100.
- the controller 117 controls the other blocks by processing the data according to the program using the program and the data stored in the storage 103.
- the controller 117 reacts according to the input of the examinee through the input unit 101 or the manager of the automatic visual acuity analyzer 100, processes the data according to the input, and outputs the result to the output unit 107.
- the controller 117 may include an execution unit capable of executing code of a program and may be a so-called processor, microcomputer, CPU, MPU, or the like.
- the controller 117 sets the remote or near mode according to the setting data received through the input unit 101 and controls the optical unit 115 according to the setting. For example, the controller 117 may change the position of one lens of the plurality of lenses. In addition, the controller 117 may perform various types of control according to the control data received through the external interface unit 105 and output the result to the external interface unit 105. In addition, the controller 117 may output a visual acuity test guidement through a speaker of the output unit 107 as a voice.
- the controller 117 recognizes the subject through the sensing unit 109, loads a program stored in the storage unit 103, and performs an eye test.
- a visual inspection method executed by the controller 117 will be described with reference to FIGS. 5 and 6.
- connection unit 119 may transmit and receive data / control data between blocks.
- the connection unit 119 is composed of one or more combinations of a parallel bus, a serial bus, a general purpose input output (GPIO), and the like.
- FIG. 5 is a diagram illustrating a flowchart for visual inspection.
- the visual inspection flowchart of FIG. 5 is performed by the automatic visual inspection apparatus 100 and is preferably performed by the controller 117 controlling other blocks using a program stored in the storage 103.
- the vision test according to the present invention provides at least three test modes according to the use environment.
- One test mode is a mode for examining both binocular and monocular which can be used in public places such as an optician (hereinafter referred to as' first mode ') and the other test mode is a monocular test mode which can be used in ophthalmology (hereinafter' And another test mode (hereinafter, referred to as a 'third mode') that can be utilized in a physical examination.
- Each of these first to third modes may also have a far / near mode.
- the automatic visual acuity analyzer 100 inspects the binocular vision to determine a reference visual acuity (S110).
- the controller 117 displays the target image on both the left eye display module and the right eye display module for examination of binocular vision.
- the examinee may input a response to the displayed image using a button of the input unit 101 or further, a direction stick.
- Step S110 may be performed a plurality of times, for example, by repeating four times to determine each of four binocular visions.
- the stages of the visual acuity table utilized in each iteration may be different, for example seven visual acuity tables are used in the first iteration and 13 visual acuity tables are used after the second iteration.
- Each target image in the vision table of step 7 or 13 corresponds to a specific vision value. Therefore, the stage 7 visual acuity table is used for a simple visual acuity test and the stage 13 visual acuity table is used for an accurate visual acuity test. You can also use a more detailed visual acuity table for a more accurate visual acuity test.
- the automatic visual acuity analyzer 100 determines a reference visual acuity in step S120.
- the automatic visual acuity detector 100 may determine the binocular vision determined through matching binocular vision or multiple binocular vision or probability among the binocular vision determined from the plurality of binocular examinations as the reference visual acuity.
- the reference visual acuity is the visual acuity examined with at least both eyes, and this standard visual acuity is then used as a reference point in the visual inspection of the right or left eye. Examination of baseline vision has a variety of purposes. For example, the reference vision test is used to allow the subject to adapt to the automatic vision tester 100 and then to filter the results of the vision test in the right eye, left eye and binocular vision test.
- the automatic visual acuity analyzer 100 displays a target image on the right eye display module of the display unit 111 to test the right eye's vision (S130).
- the target image is not displayed on the left eye display module, and further, the corresponding LED of the lighting unit 113 that outputs the light to the left eye display module may also not output the light. .
- Examination of the right eye visual acuity is performed using a 13-stage visual acuity table, for example, and multiple times. For example, the right eye vision test is performed twice.
- a visual acuity test can determine one visual acuity value for the right eye.
- the visual acuity test 100 is compared with the reference visual acuity of a plurality of times, the automatic visual acuity analyzer 100 determines the right eye acuity (S140). If the right eye visual acuity (values) are within a certain threshold range from the reference visual acuity, it can be regarded as a reliable test result and the right eye visual acuity can be determined as the average of one right eye or right eye visual acuity.
- the process may proceed to step 130 to re-examine right eye vision.
- the automatic visual acuity tester 100 checks the left eye visual acuity (S150).
- the left eye display module of the display unit 111 is utilized, and the target image is not displayed on the right eye display module.
- the corresponding LED of the lighting unit 113 for outputting light to the right eye display module may not output light.
- Examination of the left eye visual acuity is performed using a 13-stage visual acuity table, for example, and multiple times. For example, the left eye vision test is performed twice. The left eye vision test may determine one vision value for the left eye.
- the automatic visual acuity checker 100 determines the left eye visual acuity by comparing the left eye visual acuity tested a plurality of times with the reference visual acuity (S160). If the examined left eye visual acuity (value) is within a certain threshold and the reference visual acuity (value), it can be regarded as a reliable test result and the left eye visual acuity can be determined as an average of one left eye or left eye visual acuity.
- the process may proceed to step 150 to re-examine the left eye's vision.
- the automatic visual acuity analyzer 100 outputs the visual acuity test result through the output unit 107 (S170), and transmits the result to the external device through the external interface unit 105, and then ends (S200).
- the binocular vision may be examined a plurality of times after step S160, and the binocular vision may be further determined and output.
- a simple visual acuity table may be utilized.
- the visual acuity table used in steps S130 and S150 may be a seventh visual acuity table.
- reference eyesight can be obtained and the correct eyesight of the subject can be examined using the reference eyesight.
- the flowchart of FIG. 5 shows the visual inspection flow in the remote mode or the near mode.
- the controller 117 may control the optical unit 115 to set the remote mode or the near mode.
- the controller 117 may control a motor (not shown) for changing the position of the lens or control a physical switch for changing the position to set a remote mode or a near mode and visual inspection in conjunction with a user input. Is performed according to the mode, and then the visual acuity test result is output.
- the controller 117 performs a visual inspection of the remote mode or the near mode in conjunction with a user input by using a plurality of lenses of the optical unit 115 and outputs the visual inspection result to the output unit 107.
- FIG. 6 is a flowchart illustrating a binocular, left or right eye visual acuity using a target according to the present invention and through a simple user input.
- the flowchart of FIG. 6 is performed at least in steps S110, S130, and S150 of FIG. 5 and is configured to respond to display of the target image and thus user input. Therefore, when step S110, step S130, or step S150 of FIG. 5 is performed, the flowchart of FIG. 6 starts (S300).
- the flowchart of FIG. 6 is also performed by the automatic vision tester 100 and preferably by the controller 117 using a program.
- the flowchart of FIG. 6 describes a flow of performing an eye test using a user input linked with a target image.
- the controller 117 selects one target data from the visual acuity table of designated steps stored in the storage 103 (S301).
- Target data includes, for example, a target image and further includes a visual acuity value corresponding to the target image. Thereafter, the control unit 117 generates an image for visual inspection using the target data (S303).
- the generated image includes two figures represented by lines.
- the generation of the image here means the generation of an image to be output to the display 111 from the target data of the storage unit 103, for example, from the copy of the target image of the storage unit 103 to the frame buffer or from the target image.
- the target data selected is randomly selected or intermediate data among the stages of the visual acuity table or visual data of the visual acuity corresponding to the result (eg, reference visual acuity) determined in the previous visual acuity test.
- the controller 117 outputs an image including two figures represented by lines to the display 111, and displays the image on the display 111.
- the controller 117 may output an image to the left eye display module and / or the right eye display module to display an image for a left eye vision test, a right eye test, or a binocular vision test to a subject.
- the image displayed on the display module of the display 111 is recognized by the examinee.
- the subject recognizes the image through one or more lenses.
- the displayed image displays the outline figure and the outline figure displayed in the line of the outline figure as a line.
- the outer figure and the inner figure may be a ring type, a rectangle, a triangle, an ellipse, or the like, or may have any other shape.
- the outer figure and the inner figure may have the same shape.
- the point-to-point spacing corresponding to the first point of one target image (e.g., (a), (b), (c) or (d) of FIG. 3) displayed as can be seen through FIG. It has a constant magnitude of interval according to the value and is preferably different from and narrowest to the interval between points corresponding to the second point.
- the examinee inputs a user input using a direction stick and / or a button, and the controller 117 receives a user input in response to the image displayed through the input unit 101 (S307).
- the user input is a response to the displayed image visually recognized by the subject (user) with respect to the first point of the line representing the outline figure and the corresponding point of the line of the outline figure.
- user input may be input to indicate that the shapes are visually superimposed (attached) by a point corresponding to the first point using a single or two buttons or from a center of the outer shape using a direction stick.
- the target image displayed according to the invention may be used to indicate whether it is superimposed or used to indicate a direction. Therefore, children can be provided with a simple input interface, and adults can have more detailed visual inspection.
- the controller 117 determines an end condition of the vision test (S309).
- the termination condition may be the number of repetitions of the image display S305, whether to obtain an accurate visual inspection result according to a user input, and the like.
- step S400 the process transitions to step S400 and the controller 117 ends the flowchart of FIG. 6.
- the controller 117 selects a subsequent target from the visual acuity table of the storage 103 (S311). Subsequent target data is determined at least by user input.
- the controller 117 may have a smaller visual acuity value (e.g., 1.0--) than the corresponding target data of the image displayed in step S305. > 0.5) Select the target.
- the control unit displays a target having a larger visual acuity value (e.g., 1.0-> 1.5) than the corresponding target data of the image displayed in step S305. Choose.
- the selection of subsequent targets in response to user input need not be sequentially selected for the staged targets of the visual acuity table.
- the visual acuity table consists of visual acuity values of 0.1, 0.3, 0.5, 0.7, 1.0, 1.5, 2.0, etc.
- the subsequent visual acuity is 0.5 or not 0.7 upon receipt of an input indicating that the visual acuity image is attached to the 1.0 visual image. 0.3 may be selected.
- control unit 117 repeats steps S303 to S309. Accordingly, the controller 117 may display the regenerated image in response to the user input in step S305, which is repeatedly performed, and receive the user input again in step S307.
- the image to be displayed again includes figures represented by lines and is different from the image displayed in step S305 before the repetition and the sizes of the figures of the image are determined to be larger or smaller by user input.
- the visual acuity test is performed by simple user input using a simple image without using multiple images. It is also possible to automate visual acuity by generating subsequent images in response to input.
- the automatic vision tester 100 and the automatic vision test method of the present invention can solve various problems caused by the conventional vision test method.
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Abstract
Description
Claims (11)
- (a) 선(line)으로 표현되는 제1 도형 및 상기 제1 도형의 선 내부에서 선으로 표현되는 제2 도형을 포함하는 시표 이미지를 디스플레이하는 단계; 및(b) 디스플레이된 시표 이미지에 응답한 사용자 입력을 수신하는 단계;를 포함하고,상기 제1 도형을 표현하는 선의 제1 지점과 상기 제2 도형을 표현하는 선의 대응하는 지점간 간격은 상기 제1 도형을 표현하는 선의 제2 지점과 상기 제2 도형을 표현하는 선의 대응하는 지점간 간격보다 좁은,자동 시력 검사 방법.
- 제1항에 있어서,(c) 상기 사용자 입력에 응답하여 선(line)으로 표현되는 제1 도형 및 상기 제1 도형의 선 내부에서 선으로 표현되는 제2 도형을 포함하는 시표 이미지를 디스플레이하는 단계;를 더 포함하며,상기 단계 (a)의 시표 이미지에 포함된 제1 도형 및 제2 도형의 크기와 상기 단계 (c)의 시표 이미지에 포함된 제1 도형 및 제2 도형의 크기는 상이하고 상기 단계 (c)의 제1 도형 및 제2 도형의 크기는 사용자 입력에 의해서 결정되는,자동 시력 검사 방법.
- 제2항에 있어서,상기 단계 (a)의 시표 이미지는 제1 시력값에 대응하고 상기 단계 (c)의 시표 이미지는 상기 제1 시력값과는 상이한 제2 시력값에 대응하는,자동 시력 검사 방법.
- 제1항에 있어서,상기 사용자 입력은 상기 제1 도형을 표현하는 선의 제1 지점과 상기 제2 도형의 선의 대응하는 지점에 대해서 사용자에 의해 시각적으로 인식되는 상기 시표 이미지에 대한 반응인,자동 시력 검사 방법.
- 제4항에 있어서,상기 사용자 입력은 상기 제1 지점과 상기 대응하는 지점에 대해 상기 제1 도형과 상기 제2 도형이 시각적으로 중첩되었는 지를 나타내는 입력이거나 상기 제1 지점과 상기 대응하는 지점에 대한 사용자에 의해 인식되는 방향을 나타내는 입력인,자동 시력 검사 방법.
- 제3항에 있어서,상기 제1 도형 및 제2 도형은 링(ring) 타입의 도형이며,상기 단계 (a)는 제1 시력값에 대응하는 단일의 시표 이미지만을 디스플레이하고 상기 단계 (c)는 제2 시력값에 대응하는 단일의 시표 이미지만을 디스플레이하며,상기 단계 (b)는 상기 제1 시력값에 대응하는 단일의 시표 이미지에 대하여 사용자가 시각적으로 인식하는 시표 이미지의 형태에 대한 반응을 사용자 입력으로 수신하는,자동 시력 검사 방법.
- 선(line)으로 표현되는 제1 도형 및 상기 제1 도형의 선 내부에서 선으로 표현되는 제2 도형을 포함하는 시표 이미지를 디스플레이하는 디스플레이부; 및디스플레이된 시표 이미지에 응답한 사용자 입력을 수신하는 입력부;를 포함하며,상기 제1 도형을 표현하는 선의 제1 지점과 상기 제2 도형을 표현하는 선의 대응하는 지점간 간격은 상기 제1 도형을 표현하는 선의 제2 지점과 상기 제2 도형을 표현하는 선의 대응하는 지점간 간격보다 좁은,자동 시력 검사기.
- 제7항에 있어서,제1 도형 및 제2 도형을 포함하는 상기 시표 이미지를 생성하는 제어부;를 더 포함하며,상기 제어부는 입력부를 통해 수신된 사용자 입력에 응답하여, 선으로 표현되는 제1 도형 및 상기 제1 도형의 선 내부에서 선으로 표현되는 제2 도형을 포함하고 이전에 생성된 시표 이미지와 상이한 후속 시표 이미지를 생성하고 생성된 후속 시표 이미지를 상기 디스플레이부로 출력하며,이전에 생성된 시표 이미지의 제1 도형 및 제2 도형의 크기와 후속 시표 이미지의 제1 도형 및 제2 도형의 크기는 상이하고, 후속 시표 이미지의 제1 도형 및 제2 도형의 크기는 상기 사용자 입력에 의해서 결정되는,자동 시력 검사기.
- 제8항에 있어서,상기 이전에 생성된 시표 이미지는 제1 시력값에 대응하고 상기 후속 시표 이미지는 상기 제1 시력값과는 상이한 제2 시력값에 대응하는,자동 시력 검사기.
- 제8항에 있어서,복수의 렌즈를 포함하는 광학부; 및 시력 검사 결과를 출력하는 출력부;를 더 포함하며,상기 제어부는 상기 광학부의 복수의 렌즈를 활용하여 원거리 모드 또는 근거리 모드의 시력 검사를 사용자 입력과 연동하여 수행하고 시력 검사 결과를 상기 출력부로 출력하는,자동 시력 검사기.
- 제9항에 있어서,상기 제1 도형 및 제2 도형은 링(ring) 타입의 도형이며,상기 제어부는 상기 사용자 입력에 응답하여 상기 후속 시표 이미지만을 디스플레이부로 출력하며,상기 사용자 입력은 상기 제1 시력값에 대응하는 단일의 시표 이미지에 대하여 사용자가 시각적으로 인식하는 시표 이미지의 형태에 대한 반응인,자동 시력 검사기.
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KR101652739B1 (ko) | 2016-03-23 | 2016-08-31 | (주) 뷰엠테크놀로지 | 시력 검사 방법, 시력 검사기 및 이 시력 검사 방법의 프로그램을 저장하는 다운로더 서버 |
USD938986S1 (en) | 2019-09-17 | 2021-12-21 | Lombart Brothers, Inc. | Display screen or portion thereof with graphical user interface |
US11779202B2 (en) | 2019-09-17 | 2023-10-10 | Lombart Brothers, Inc. | Systems and methods for automated subjective refractions |
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