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72 results about "Eye chart" patented technology
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An eye chart is a chart used to measure visual acuity. Eye charts are often used by health care professionals, such as optometrists, physicians or nurses, to screen persons for vision impairment. Ophthalmologists, physicians who specialize in the eye, also use eye charts to monitor the visual acuity of their patients in response to various therapies such as medications or surgery.
Subjective optometry prediction method combining wavefront aberration and optical signal
The invention provides a subjective optometry prediction method combining wavefront aberration and optical signals. According to the method, eyeball wavefront aberration data are measured through a wavefront sensor, cornea, crystal and retina biological parameters are obtained by combining multi-view-field scanning of a galvanometer system, and after high-credibility data points are screened, a gradient refractive index eyeball three-dimensional model is constructed by adopting an NURBS algorithm; using finite element analysis to optimize cornea stress distribution, iteratively correcting the model through a deformation energy function, and dynamically compensating eyeball motion errors based on eye movement tracking data; and generating a multi-field-angle visual chart image through ray tracing simulation, and predicting a subjective optometry result in combination with an image quality evaluation algorithm. According to the method, high-precision modeling, dynamic error suppression and intelligent simulation technologies are fused, the optometry prediction accuracy, the personalized adaptation degree and the dynamic scene adaptability are remarkably improved, and an efficient and reliable solution is provided for refraction correction.
Owner:HUNAN HUOYAN MEDICAL TECH CO LTD
Method for detecting near vision based on adaptive technology
The invention relates to a method for detecting near vision based on an adaptive technology, and the method comprises the steps: S1, carrying out the initialization of a program, and obtaining a device DPI; s2, turning on a camera, acquiring focal length information of the camera, controlling parameters of the camera of the mobile phone to remain unchanged, and detecting whether a human face is in a state of being parallel to a screen and centered or not in real time; if it is detected that the face is not parallel to the screen or not located in the center of the screen, the program pauses detection and guides the user to adjust the position of the face, and then the step S2 is executed again until it is detected that the face is parallel to the screen and located in the center of the screen; s3, entering an interpupillary distance measurement program, and measuring the interpupillary distance; s4, starting a near vision detection program, calculating a detection distance according to the interpupillary distance, and dynamically adjusting the sighting mark size of the visual chart according to the detection distance; and S5, performing near vision detection, and recording a near vision detection result. By dynamically adjusting the size of the sighting mark, the detection error is effectively avoided, and the objectivity and accuracy of the detection result are improved.
Owner:GUANGDONG GENERAL HOSPITAL +1
Anti-memorizing logarithmic visual chart
Owner:ZHANGJIAGANG XINFEI MEDICAL EQUIPMENT CO LTD
Ophthalmologic apparatus and visual target presenting device
An ophthalmologic apparatus includes a first visual target presenting unit that presents a first eye chart including a visual target, at a first examination distance, to an examinee's eye of which a trial lens is disposed ahead, and a second visual target presenting unit that presents a second eye chart including a visual target, at a second examination distance different from the first examination distance, wherein the first eye chart and the second eye chart are presented adjacently in plan view in a presentation region in which no influence of aberration of the trial lens is present, within a range viewable by the examinee's eye through the trial lens.
Owner:TOPCON CORPORATION
Portable foldable far-measuring visual chart
The utility model discloses a portable foldable far-vision testing chart, which comprises a dial plate member, the dial plate member is provided with an inclined plane, and testing scales are arranged on the inclined plane; a supporting frame body is arranged above the dial piece, the bottom end of the supporting frame body is fixedly connected with the dial piece, the two sides of the top end of the supporting frame body are rotationally connected with a first reflection assembly and a second reflection assembly, a first reflection mirror is arranged in the first reflection assembly, and a second reflection mirror is arranged in the second reflection assembly; the first reflecting mirror is located between the dial plate piece and the second reflecting mirror and reflects the test scales on the dial plate piece to the second reflecting mirror, and the second reflecting mirror is located above the first reflecting mirror and reflects the test scales reflected to the second reflecting mirror to the eyes of a tested person. According to the utility model, the indoor space occupied by the test distance is effectively shortened; vision testing work can be carried out in a small indoor space, and the using effect of the visual chart is improved.
Owner:HENAN HONG HUI MEDICAL TECH CO TD
Mirror surface paperboard flatness detector
The mirror surface paperboard flatness detector comprises a base, a glass white board, a lifting assembly and a clamping assembly, the paperboard needing to be detected is fixed in two sets of fixing grooves in the glass white board, the paperboard is fixed in the fixing grooves, a light source lamp box standard visual chart is vertically hung on a wall, patterns are arranged on the light source lamp box standard visual chart, and the clamping assembly is arranged on the base. The method comprises the following steps: arranging a standard visual chart from top to bottom and from large to small, turning on a light source, moving a to-be-detected card paper fixed on a glass white board, enabling a person to stand between the standard visual chart of the light source lamp box and the card paper, starting to read visual chart values reflected on the card paper, and recording data; the flatness of the card paper is judged by repeatedly adjusting data read by the distance and height between the standard visual chart of the light source lamp box and the card paper, flatness detection is carried out on the card paper, and effective detection efficiency and detection precision are achieved.
Owner:GUANGZHOU JINSHENG NEW MATERIAL TECHNOLOGY CO LTD
Recitation-preventing visual chart lamp box
The utility model discloses an anti-reciting visual chart light box which comprises a box body, an observation window is arranged on one side of the box body, a transparent plate is fixedly connected in the observation window, adjusting rods are rotationally connected to the two sides in the box body, adjusting cylinders are installed on the outer surfaces of the adjusting rods in a sleeved mode, and locking rings are connected to the surfaces of the adjusting rods in a threaded mode. The surface of one side of the locking ring is connected to the end of the adjusting cylinder in a pressed mode, an annular belt is rotationally connected to the outer surface of the adjusting cylinder, a visual chart is printed on the surface of the annular belt, the surface of one side of the annular belt is attached to the surface of one side of the transparent plate, and lamp columns are fixedly installed on the two sides of the interior of the box body. The lamp post is located on one side of the annular belt, a hand wheel is fixedly connected to the surface of one end of the adjusting rod, watching is facilitated, meanwhile, the adjusting position can be rotated, alphabets in different directions can be displayed, temporary switching can be achieved in the checking process, recitation is prevented, combined use is facilitated, and adaptability is high.
Owner:JIANGXI HUBICHI MEDICAL TECHNOLOGY CO LTD
Synchronous mirror image control vision examination auxiliary system for infrared remote control visual chart
The invention discloses an infrared remote control visual chart-oriented synchronous mirror image control vision examination auxiliary system, which comprises an infrared receiving and transmitting device and a PC terminal, the infrared receiving and transmitting device comprises a development board, an infrared receiving module and an infrared transmitting module, and the PC terminal comprises a PC and is equipped with a bar code or two-dimensional code scanning gun and a bar code thermal printer. The PC is connected to an internal network and is connected with the development board; a signal pin of the infrared receiving module is connected with a digital pin D3 of the development board, a signal pin of the infrared transmitting module is connected with a digital pin D2 of the development board, and power supply pins of the infrared receiving module and the infrared transmitting module are respectively connected with a 5V pin and a GND pin of the development board; coding analysis software for infrared remote control of the visual chart and synchronous mirror image software for the infrared remote control visual chart are written in the PC, an infrared signal analysis database is established through the coding analysis software, and the software receives and sends infrared coding data through a COM port and an infrared receiving and emitting device.
Owner:MINGDE DOCTOR GROUP (SHENZHEN) CO LTD
Vision detection device
The invention relates to the technical field of vision detection equipment, in particular to a vision detection device. The internal projection device comprises a display assembly used for projecting a visual chart, an imaging support movably connected with the display assembly, an internal projection base arranged below the imaging support and used for being matched with the display assembly, a driving assembly used for changing the projection angle of the display assembly and a connecting rod assembly. And the imaging bracket is internally and movably connected with a rotary reflector assembly which is matched with the inner projection base and is used for changing a projection light path of the display assembly. The method has the advantages that the problem that the visual function detection equipment is difficult to efficiently switch the detection state in the same scene is solved, and the flexibility of the detection equipment is improved.
Owner:NINGBO MING SING OPTICAL R & D
Optical imaging data analysis method and system based on artificial intelligence
ActiveCN119151870Aimprove accuracyImprove efficiencyImage enhancementImage analysisAlgorithmImaging data
The embodiment of the invention relates to the technical field of image data processing, in particular to an optical imaging data analysis method and system based on artificial intelligence, and provides an image analysis thought based on a liquid crystal imaging wavelet descriptor. The embodiment of the invention aims to improve the accuracy and efficiency of liquid crystal visual chart quality inspection. Meanwhile, through an innovative algorithm debugging strategy, the intelligent level of the automatic quality inspection system is further improved, and powerful technical support is provided for technical progress and industrial upgrading of the liquid crystal display industry.
Owner:GUANGZHOU YISHIYOU TECH CO LTD
Trajectory analysis method, device and storage medium based on self-test vision chart
The present invention relates to the technical field of eye chart trajectory generation, and specifically discloses a trajectory analysis method, device, and storage medium based on a self-test eye chart. The method comprises: determining a trainable range on the self-test eye chart based on a user's vision data; generating a training trajectory on the self-test eye chart based on the trainable range; controlling the self-test eye chart to perform a corresponding sight mark indication action based on a preset training time and the training trajectory; obtaining training feedback information from the user regarding the sight mark indication action; and storing the training feedback information. By determining the trainable range based on the user's vision data, a personalized training plan can be formulated based on each user's actual vision condition, making the training more targeted and improving the training effect.
Owner:SICHUAN HEALTHSUN VISION PHARMA TECH DEV CO LTD
Height adjusting support for electronic visual chart
ActiveCN222278121UEasy to disassembleImprove stabilityStands/trestlesMechanical engineeringThreaded rod
The utility model belongs to the technical field of height adjusting supports, and particularly relates to an electronic visual chart height adjusting support which comprises a supporting seat, wheels are installed at the bottom end of the supporting seat, an adjusting rod is connected to the top end of the supporting seat, and an electronic visual chart body is arranged on one side of the top end of the adjusting rod. A butt joint block is connected to the back end of the electronic visual chart body, a fixing block is installed at the top end of the adjusting rod, a two-way threaded rod is installed in the fixing block, a bearing is connected to one end of the two-way threaded rod, and a protruding block is in threaded connection to the surface of the two-way threaded rod; according to the utility model, through the cooperation between the convex block and the bidirectional threaded rod, the convex block can drive the positioning column to be embedded with the butt joint block, so that the installation work of the electronic visual chart body is completed, the installation efficiency is improved, the disassembly work of the electronic visual chart body is also facilitated, and the subsequent cooperation between the supporting column and the fixing column is facilitated. The supporting column descends to be in contact with the ground, so that the use stability of the supporting seat is improved.
Owner:SHANXI AIER EYE HOSPITAL CO LTD
Pendant (Chinese character heart, little bird, stone tablet, eye chart)
1. Name of the design product: Pendant (Chinese character heart, little bird, stone tablet, eye chart). 2. Use of the design product: The design product is used for wearing and decoration. 3. Design key points of the design product: The combination of shape and pattern. 4. Picture or photo that best shows the design key points: 3D view of Design 3. 5. Design 1 is designated as the basic design. 6. Other situations that need to be explained: The reference figure of the usage state of Design 1 is the state when the Design 1 pendant is worn with a necklace in daily life, the reference figure of the usage state of Design 2 is the state when the Design 2 pendant is worn with a necklace in daily life, and the reference figure of the usage state of Design 3 is the state when the Design 3 pendant is worn with a necklace in daily life. Design 1, Design 2, and Design 3 are similar designs of the same design.
Owner:张秋霞
Vision testing graphical user interface for electronic devices
1. Name of the product of this design: Graphical user interface for vision test of electronic equipment. 2. Purpose of this design product: used in an electronic device. 3. The design key points of this appearance design product are: the graphical user interface content. 4. The picture or photo that best illustrates the key points of the design: main view. 5. The electronic equipment is of conventional design, and the rear view, left view, right view, top view and bottom view are omitted. 6. Uses of Graphical User Interface: Used for vision testing. 7. Description of the changing states of the graphical user interface: Click "E-shaped Eye Chart" in the main view to enter Changing State Diagram 1; click "Start Test" in Changing State Diagram 1 to enter Changing State Diagram 2; set the test method in Changing State Diagram 2, and click "OK" to enter Changing State Diagram 3. In Changing State Diagram 3, click the answer to the question in the floating window in the lower right corner to display the next question; after completing the answers to the questions in Changing State Diagram 3, enter Changing State Diagram 4. 8. Other situations that require explanation: The X in the view is text content; the filled area is the content screen.
Owner:NEW SINGULARITY INT TECHN DEV
Eye chart projector
1. The name of this design product: Eye chart projector. 2. Purpose of this design product: This design product is used for vision testing or screening of the eyes. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.
Owner:ZHEJIANG MUCHANG MEDICAL TECHNOLOGY CO LTD
Visual chart capable of being automatically adjusted according to sitting posture height of patient
ActiveCN222444077UGuaranteed identityeasy to operateEye diagnosticsPhysical medicine and rehabilitationElectric machinery
A visual chart capable of being automatically adjusted according to the height of the sitting posture of a patient structurally comprises a fixing frame, an adjusting groove with openings in the front end, the rear end and the lower end is formed in the fixing frame, a visual chart board is arranged in the adjusting groove in a sliding mode, and the visual chart structure capable of being automatically adjusted according to the height of the sitting posture of the patient is adopted, so that the sight angles of all the patients watching the visual chart are effectively basically the same; during examination, the optometry frame is worn, in order to ensure that horizontal light emitted by a laser lamp on the optometry frame is located at the 1.0 vision value position on the visual chart board, a winding motor is controlled through a remote controller, when the horizontal light is too low, the winding motor drives a winding wheel to rotate clockwise, the winding wheel synchronously winds two winding wires, and the two winding wires are wound synchronously; the winding wire drives the visual chart board to slide upwards through the sliding block, on the contrary, the winding motor drives the winding wheel to rotate anticlockwise, the visual chart board slides downwards along with releasing of the winding wire and under the gravity cooperation of the balancing weight, and operation is convenient.
Owner:LINGSHUI LI AUTONOMOUS COUNTY PEOPLES HOSPITAL (LINGSHUI LI AUTONOMOUS COUNTY PEOPLES HOSPITAL MEDICAL COMMUNITY GENERAL HOSPITAL)
Methods and Systems for Obtaining, Aggregating, and Analyzing Vision Data to Assess a Person's Vision Performance
PendingUS20250060816A1Input/output for user-computer interactionMedical automated diagnosisMixed realityComputer graphics (images)
The present specification describes methods and systems for modifying a media, such as Virtual Reality, Augmented Reality, or Mixed Reality (VR / AR / MxR) media based on a vision profile and a target application. In embodiments of the specification, a Sensory Data Exchange (SDE) is created that enables identification of various vision profiles for users and user groups. The SDE may be utilized to modify one or more media in accordance with each type of user and / or user group.
Owner:SPHAIROS INC
Eye chart box
Owner:WANNAN MEDICAL UNIVERSITY
Fast calibration of gaze tracking method
ActiveCN117218701BCharacter and pattern recognitionBiological modelsComputer graphics (images)Radiology
The application discloses a kind of fast calibration sight line tracking methods, comprising: by accessing camera, extract each frame image in real-time video, obtain the image of face area;Image pre-processing module is used to the image pre-processing of obtained picture, and the pupil center point coordinate is obtained;Diagonal line two-point calibration is used, and the functional relationship between screen diagonal line L and the w and h of screen is constructed;Calibration module is set to be able to immediately enter standby calibration state when camera continuous multiple frames are not detected face, and after detecting face again, it will immediately start calibration module and carry out human eye calibration work;The mapping function between the center point of the center point between the pupils of two eyes and computer cursor is constructed by the eye chart data obtained in calibration work process, and then the eye chart data of any moment is substituted into mapping function, and the gaze point coordinate on screen at this moment can be obtained and mouse movement and single-click operation are controlled.The sight line tracking method calibration speed is fast, and time is saved.
Owner:AVIC EAST CHINA OPTOELECTRONICS CO LTD
Vision detection method and device, terminal, storage medium and electronic equipment
The invention provides a vision detection method and device, a terminal, a storage medium and electronic equipment, and relates to the technical field of human-computer interaction. The method comprises the following steps: acquiring eye position information of a user; according to the position information of the human eyes of the user, determining a display position of a detection sighting mark in a display area of a detection terminal and a display size of the detection sighting mark; randomly selecting a detection sighting mark from a detection visual chart, and displaying the detection sighting mark at the display position of the display area of the detection terminal according to the display size of the detection sighting mark; and determining the vision information of the user in response to the feedback of the user on the detection sighting mark. According to the method, the mode of randomly selecting the sighting marks for detection is adopted, compared with an original fixed visual chart mode for detection, the detection time can be greatly shortened, the detection speed can be greatly increased, the mode of randomly selecting the detection sighting marks is adopted, a user cannot predict the detection sighting marks in advance, and therefore the obtained user vision information is more accurate.
Owner:BOE TECHNOLOGY GROUP CO LTD
Vision detection system
The invention provides a vision detection system, and relates to the technical field of vision detection.The system comprises host equipment and remote control equipment, and the host equipment displays sighting marks in a visual chart through a display module and receives direction indication signals sent by the remote control equipment through a wireless signal receiving module; the host device is configured to collect operation behavior data of operating the remote control device by a subject, calculate a hesitation index according to the operation behavior data, prolong sighting mark display time of a current detection line or repeat a test of the current detection line when the hesitation index exceeds a first preset threshold value, and send the sighting mark display time to the host device when the hesitation index is lower than a second preset threshold value. The correct frequency condition for detecting line switching is reduced; the operation behavior data comprises the ratio of the wrong attempt times to the total key pressing times of the same sighting mark, the standard deviation of correct response time and the variance of the interval between adjacent keys. By applying the technical scheme of the invention, more effective vision detection can be realized in practical application.
Owner:BEIJING SHIJITAN HOSPITAL CAPITAL MEDICAL UNIVERSITY
Liftable visual chart
The utility model discloses a liftable visual chart which comprises a reverse plate, one side of the reverse plate is rotatably connected with a fixed base, two ends of the fixed base are provided with fixing lugs, a sliding block is arranged in the fixed base, the side edge of the fixed base is provided with a locking pulley, two sides of the locking pulley are provided with sliding grooves, and the locking pulley is provided with a sliding groove. A stopping block is connected to the sliding groove in a sliding manner; the visual chart can be hidden behind the decorative picture through the reversing plate and the fixed base and displayed when vision detection is needed, the attractiveness in families is improved, the height of the visual chart can be adjusted through the sliding block, and the visual chart is suitable for family members of different heights and universal.
Owner:SHENGJUE (SHANGHAI) TECH CO LTD
Intelligent vision detection method and system based on noninvasive brain-computer interface technology
The invention discloses an intelligent vision detection method and system based on a noninvasive brain-computer interface technology, and belongs to the field of medical diagnosis, and the system comprises a stimulation presentation module, a data acquisition module, a model building module and an online control module; the method comprises the steps that sighting marks of different sizes flicker at the frequency of 10 Hz to stimulate a visual system of a subject, a Neuroscan device is used for collecting electroencephalogram signals, after preprocessing such as filtering and artifact removal, frequency domain, time domain and time frequency features are extracted, and a three-level machine learning model is constructed; the offline experiment verifies the performance of the model, the online experiment collects data in real time through a TCP protocol and performs grading prediction, and a result is fed back to a display screen. According to the intelligent vision detection method and system based on the noninvasive brain-computer interface technology, subjective deviation of a traditional visual chart is avoided, the method and system are suitable for special crowds, an objective and dynamic new path is provided for vision detection, and research and development of portable intelligent equipment can be promoted.
Owner:TIANJIN UNIV
Movable vision detection equipment
The invention relates to the technical field of vision detection, in particular to movable vision detection equipment which comprises a detection mechanism and a remote controller used for controlling the detection mechanism, the detection mechanism comprises a flexible visual chart, a bottom box, a machine cover, a balance weight cylinder, a supporting assembly and a winding assembly, and the winding assembly is arranged in the bottom box. The upper end of the flexible visual chart is wound on the winding assembly, the lower end of the flexible visual chart penetrates through the bottom of the bottom box, the balance weight cylinder is connected to the lower end of the flexible visual chart, the supporting assembly is arranged on the rear sides of the two ends of the balance weight cylinder, the machine cover is buckled to the top of the bottom box, and the cleaning assembly is arranged in the machine cover and abuts against the flexible visual chart. The problems that in the prior art, vision detection equipment is not convenient to use and cannot meet the requirements of some patients who cannot leave the home or are inconvenient to go out, it is difficult to ensure that a visual chart is flatly and smoothly unfolded in the using process, stability and precision are low, the visual chart cannot be automatically cleaned, the workload of medical staff is easily increased, and the working efficiency is high are solved. And the working efficiency is poor.
Owner:JINAN PEOPLES HOSPITAL
A multifunctional remote-controlled ophthalmic vision chart
ActiveCN118614861Breduce the possibilityimprove objectivityEye diagnosticsMechanical engineeringOPHTHALMOLOGICALS
The present application relates to the technical field of vision charts, and in particular to a multifunctional remote-controlled ophthalmic vision chart, comprising a supporting tube, a connecting tube is arranged on one side of the supporting tube, a turntable is arranged on one end of the supporting tube, a perspective window is arranged on the turntable, a rotating ring is arranged for rotation in the supporting tube, a connecting disk is arranged for rotation in the rotating ring, a plurality of columns connected to the connecting tube are arranged on the connecting disk, and a vision detector is arranged on the rotating ring; during the random rotation process of the test characters of the present invention, only the perspective window can be observed, and the rotation process of the test characters is not visible, which eliminates the possibility of patients guessing the direction of the sight mark by memorizing the rotation mode, thereby improving the objectivity and accuracy of the test, and at the same time, the tester does not need to pay attention to the rotation process, but can focus more on the test itself, which helps to reduce the psychological pressure during the test and improve the comfort of the test.
Owner:JINAN MINGSHUI EYE HOSPITAL
Intelligent vision correction and management system
PendingCN120391990AEye exercisersCharacter and pattern recognitionVisual perceptionManagement system
The invention discloses an intelligent vision correction and management system, and relates to the technical field of vision training. The system comprises a vision detection unit, a rechecking unit, a correction training unit and a management unit, wherein the vision detection unit evaluates vision through a dynamic visual chart and gesture recognition; and the re-checking unit is combined with historical data to confirm the current vision level by an expert. The correction training unit adjusts and determines a new acousto-optic television force training scheme according to a confirmation result of an expert, and VR simulation, eye massage, ciliary muscle training and nursing light system assistance are combined. And the management unit is bound with a user account, visually displays vision changes and training schemes, and facilitates tracking and management. According to the invention, the vision detection efficiency can be improved, and the automation degree of vision training can be improved.
Owner:ZHEN VISION HEALTH IND TECH (WUHAN HUBEI) CO LTD
Ophthalmic treatment examination device and method
The present invention provides an ophthalmic treatment examination device and method, which relate to the field of vision examination technology, and include: a support unit, a controller, a power socket, a control button, a vision examination unit, a positioning unit and a control unit; the controller is installed on the rear side of the support unit; there are three control buttons, and the three control buttons are installed on the right side of the support unit, and the three control buttons are electrically connected to the controller; the vision examination units are provided in a row, and a row of vision examination units is installed on the support unit; the positioning unit is installed on the support unit, and the positioning unit is used to position the support unit; the control unit is installed on the support unit; the patient does not need to maintain a distance of about five meters from the eye chart, and is suitable for use in smaller clinics; it solves the problem that the patient generally needs to maintain a distance of about five meters from the eye chart, which is not suitable for use in smaller clinics.
Owner:THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV