# US 11,110,027 B2 · Vision training device for improving fusional vergence > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,027 B2 - Document ID: US11110027B2 - Status: Granted - Kind: B2 - Application number: 16/439,599 - Filed: 2019-06-12 - Published: 2019-09-26 - Granted: 2021-09-07 - Earliest claimed: 2016-12-15 - Assignees: Edenlux Corporation - Applicants: Edenlux Corporation - Inventors: Sungyong Park - Web page: https://patentgrep.com/patent/US11110027B2 ## CPC - A61H 5/00: Exercisers for the eyes - A61B 3/032: Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence) - A61B 3/04: Trial frames; Sets of lenses for use therewith - A61B 3/08: for testing binocular or stereoscopic vision, e.g. strabismus - A61F 9/022: {Use of special optical filters, e.g. multiple layers, filters for protection against laser light or light from nuclear explosions, screens with different filter properties on different parts of the screen; Rotating slit-discs (optical filters per se G02B5/20)} - A61F 9/027: {Straps; Buckles; Attachment of headbands} - A61F 9/029: {Additional functions or features, e.g. protection for other parts of the face such as ears, nose or mouth; Screen wipers or cleaning devices} - A61H 2201/123: Linear drive - A61H 2201/149: rotation-linear or vice versa - A61H 2201/1604: Head - A61H 2201/5007: computer controlled - A61H 2201/5043: Displays - A61H: PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY (electrotherapy, magnetotherapy, radiation therapy or ultrasound therapy A61N) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract At least one of the first display and a second display move at least one of the left eye image and the right eye image such that a distance between the left eye image and the right eye image is increased. A separation confirmation signal is received indicating that the image focuses of the image do not coincide with each other in terms of fusion. Fusional amplitude information is stored indicating a separation distance between the left eye image and the right eye image when the image separation confirmation is input. ## Claims ### Claim 1 A vision training device, comprising: a first display configured to provide a left eye image corresponding to a left eye of a user; a second display configured to provide a right eye image corresponding to a right eye of the user; and a controller configured to control at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that image focuses of the left and right eye images coincide with each other in terms of fusion, control at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that a distance between the left eye image and the right eye image is increased, receive a separation confirmation signal indicating that the image focuses do not coincide with each other in terms of fusion, and store, as fusional amplitude information, information indicating a separation distance between the left eye image and the right eye image when the separation confirmation signal is received. ### Claim 2 (depends on 1) The vision training device according to claim 1, further comprising a display unit that includes the first display and the second display. ### Claim 3 (depends on 1) The vision training device according to claim 1, further comprising a partition disposed between the first display and the second display, the partition being configured to block the left eye of the user from viewing the second display and to block the right eye of the user from viewing the first display. ### Claim 4 (depends on 1) The vision training device according to claim 1, wherein the first display is distinct from the second display. ### Claim 5 (depends on 1) The vision training device according to claim 1, wherein the controller is configured to control at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that a distance between the left eye image and the right eye image is reduced, and receive a focus consistency confirmation signal indicating that the image focuses coincide with each other in terms of fusion. ### Claim 6 (depends on 1) The vision training device according to claim 1, wherein a single display unit includes the first display and the second display, and the vision training device further comprises a separation filter configured to provide the left eye image and the right eye image to the left eye and the right eye, respectively. ### Claim 7 (depends on 6) The vision training device according to claim 6, wherein the separation filter includes at least one of a color filter and a polarizer. ### Claim 8 (depends on 1) The vision training device according to claim 1, wherein the controller is configured to set a training range in which fusional vergence training is performed based on the fusional amplitude information of the user, and control at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that the distance between the left eye image and the right eye image is reduced or increased within the set training range. ### Claim 9 (depends on 8) The vision training device according to claim 8, wherein the controller is configured to set the training range to include the separation distance corresponding to the fusional amplitude information. ### Claim 10 A vision training method, comprising: displaying, on a first display, a left eye image corresponding to a left eye of a user; displaying, on a second display, a right eye image corresponding to a right eye of the user; controlling at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that image focuses of the left and right eye images coincide with each other in terms of fusion; controlling at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that a distance between the left eye image and the right eye image is increased; receiving a separation confirmation signal indicating that the image focuses do not coincide with each other in terms of fusion; and storing, as fusional amplitude information, information indicating a separation distance between the left eye image and the right eye image when the separation confirmation signal is received. ### Claim 11 (depends on 10) The vision training method according to claim 10, wherein a display unit includes the first display and the second display. ### Claim 12 (depends on 10) The vision training method according to claim 10, wherein a partition is disposed between the first display and the second display, the partition being configured to block the left eye of the user from viewing the second display and to block the right eye of the user from viewing the first display. ### Claim 13 (depends on 10) The vision training method according to claim 10, wherein the first display is distinct from the second display. ### Claim 14 (depends on 10) The vision training method according to claim 10, further comprising: controlling at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that the distance between the left eye image and the right eye image is reduced; and receiving a focus consistency confirmation signal indicating that the image focuses coincide with each other in terms of fusion. ### Claim 15 (depends on 10) The vision training method according to claim 10, wherein a single display unit includes the first display and the second display, and a separation filter provides the left eye image and the right eye image to the left eye and the right eye, respectively. ### Claim 16 (depends on 15) The vision training method according to claim 15, wherein the separation filter includes at least one of a color filter and a polarizer. ### Claim 17 (depends on 10) The vision training method according to claim 10, further comprising: setting a training range in which fusional vergence training is performed based on the fusional amplitude information of the user; and controlling at least one of the first display and the second display to move at least one of the left eye image and the right eye image such that a distance between the left eye image and the right eye image is reduced or increased within the set training range. ### Claim 18 (depends on 17) The vision training method according to claim 17, wherein the setting the training range includes setting the training range to include the separation distance corresponding to the fusional amplitude information.