203 results about "Vision testing" patented technology

An apparatus and method for measuring the key elements of human primary health is disclosed. The apparatus is in the form of a medical diagnostics unit capable of measuring Electrocardiogram (ECG), height, weight, body mass index (BMI), body temperature, hearing efficiency, lung function, pulse, blood oxygen levels, blood pressure, urology and vision testing. The medical diagnostics unit includes an enclosure with a data card and/or fingerprint entry. The enclosure includes medical measuring devices which allow a patient to follow instructions on a touch screen visual display unit to conduct the desired tests and obtain the patient's health information. This information is stored locally as well as being transmitted to a doctor for review and evaluation. The automated medical diagnostics unit reduces the staffing requirements to obtain a patient's basic health information.

Unified vision testing and/or training kiosk may utilize display devices and input devices to administer a number of visual testing and/or training tasks to an individual. One or more display devices may provide desired resolution, geometry, and/or touch sensitivity. One or more input devices may receive inputs of different types from different positions relative to a display device. Methods of visual testing and/or training may utilize the one or more display devices, one or more input devices, and/or other types of equipment to evaluate and/or improve the visual abilities of an individual.

An adjustable and foldable device for visual field testing or treatment includes a computer display mounted on a base and presents visual stimuli to the patient. An associated head support assembly with a chinrest supports and positions the head of the subject with respect to the display. An articulated arm joins the base and the head support assembly. The arm will resist a given downward force supplied by the head, and is foldable toward the display to create a more compact and portable device. Additional articulations may allow the head support assembly to fold upon arm, and the arm to fold upon the base. The device may include a locking mechanism that secures the device in a folded or unfolded configuration.

A method for testing a person's vision is disclosed. The method includes providing, for display to the person, one or more sequences of test images, each test image including one or more test symbols. For each test image, a target symbol is identified to the person. The person then views each test image in the sequence and activates a control in response to recognising a test symbol that replicates the shape of the target symbol. At the completion of the sequence, a parameter value associated with the activations is processed and correlated with a vision metric. A system for testing a person's vision is also disclosed.

A method and apparatus for detecting leaks in blister packages wherein a package is supported with a support chamber and a flexible and imperforate bladder is placed over the package after which at least a partial vacuum pressure is applied and a measure made to determine if any leakage is detected while an image of the bladder is detected, such as by a camera, with the image being used to provide a visual indication of the location of a failure in the blister package.

A vision testing system and method to assess vision function. In one embodiment, the vision testing system comprises: (1) a display; (2) a computer coupled to the display and configured to provide dynamic images, each including a substantially constant fixed point of fixation; and (3) a human input device coupled to the computer, wherein responses from a test subject are fed back to the computer to assess the test subject's vision function.

Vision testing methods and apparatuses are disclosed, the methods including measuring the modulation to a wavefront of light imparted by a contact lens, determining the wavefront modulation necessary to emulate the optical properties of the lens as worn on a patient's eye, generating a static or dynamic image viewable by a patient, modulating the wavefront of the image remote from the patient to attain the wavefront necessary to emulate the optical properties of the lens as worn on a patient's eye, and relaying the wavefront to a plane nearby, on, or within the patient's eye. The apparatuses include devices for measuring the modulation to a wavefront of light imparted by a contact lens, determining the wavefront modulation necessary to emulate the optical properties of the lens as worn on the patient's eye, generating a static or dynamic image viewable by a patient, modulating the wavefront of the image remote from the patient to attain the wavefront necessary to emulate the optical properties of the lens as worn on the patient's eye, and relaying the wavefront to a plane nearby, on, or within the patient's eye.

The invention relates to a vision testing and training system based on virtual reality. The vision testing and training system comprises a head-wearing device, an image processing device in communication connection with the head-wearing device, an intelligent control device in communication connection with the head-wearing device and the image processing device, as well as a dizziness-preventing device and a remote terminal device which are in communication connection with the intelligent control device, wherein the head-wearing device comprises an image display device, an audio play device and a motion sensing device; the dizziness-preventing device is used for receiving the control of the intelligent control device so that the conversion angle of a vision testing image or a vision care image received by a user and the head position and angle shifting motion state of a user are synchronous, thus no dizzy feeling is generated during testing and health care, and therefore, the real sense of immediacy and sense of reality are achieved.

The embodiment of the invention relates to a method, a device and a terminal for testing vision. The method comprises the following steps: acquiring position information of a tested person relative to a display screen for displaying optotypes; determining a display method of the optotypes based on the position information; displaying the optotypes on the display screen according to the display method; receiving a judgment result for the optotypes input by the tested person; and determining a vision testing result of the tested person based on the judgment result. With the adoption of the method, the device and the terminal for testing vision, a user can conveniently test the vision condition of the user without a special device, the special environment, a professional or the help of others, therefore, the vision testing process is simplified, and the intelligence level of vision testing is improved; and meanwhile, the functions of the terminal device are also enhanced.

The invention is applicable to the field of mobile terminal, and provides a method, a system and a mobile terminal for adjusting and displaying font size. The method comprises the following steps: detecting the vision ability data of a current user; calculating font size corresponding to the vision ability data of the current user according to a preset corresponding relation between the vision ability data and the font size; and displaying font according to the corresponding font size. The method, the system and the mobile terminal for adjusting and displaying font size can calculate the size of the required font according to the vision ability data of the current user, which is tested by a vision testing sensor, can be widely applied, and have higher accuracy.

A system and associated methods for animated image vision testing is disclosed. In at least one embodiment, a vision test includes at least one animated dynamic optotype image for measuring the visual acuity of a subject. The animated image vision test takes advantage of the ability of the human eyes to detect both distance and motion. Moving images, such as rotating segmented circles, let the eyes detect motion as to the size, distance, and rotation direction of that moving image. That motion detection is much more precise than the interpretation of multiple static letters or static images. Using rotating images for vision testing rather than static images creates an acuity test more accurate than current tests, a test that is faster to use, and a test that does not require the ability to read.

A visual acuity testing apparatus capable of performing visual acuity testing under substantially uniform conditions even when a test distance and an installation distance vary has a projection optical unit including a disk whereon a chart is placed, an illumination light source, and variable projection lenses which are moved so as to change an image-forming position and an image size of an image of the chart, an input unit into which an installation distance between the screen and the visual acuity testing apparatus and a test distance between the screen and an examinee are inputted, a projection lens driving unit which moves the variable projection lenses based on the installation distance and the test distance, and a light intensity adjusting unit which adjusts light intensity based on the installation distance and the test distance so that brightness of the chart image falls within a predetermined reference range.

The invention discloses an array substrate, a driving method thereof and a display panel. The array substrate at least comprises sub pixels distributed in an array mode, a plurality of first light-emitting control signal wire groups and a plurality of second light-emitting control signal wire groups, each first light-emitting control signal wire group comprises at least one first light-emitting control signal wire, and each second light-emitting control signal wire group comprises at least one second light-emitting control signal wire; in the sub pixels in each line, the colors of the sub pixels connected with the first light-emitting control signal wires are the same. The driving method includes the steps that first signals are applied to the first light-emitting control signal wire groups one group by one group, and meanwhile second signals are applied to the other light-emitting control signal wire groups so that the sub pixels connected with the first light-emitting control signal wire groups can be displayed, and the sub pixels connected with the other light-emitting control signal wire groups can not be displayer. By means of the driving method, testing of the display performance of the array substrate in the vision testing phase can be achieved.

The invention discloses an electronic vision detecting system adopting double-blind design. The electronic vision detecting system adopting the double-blind design is characterized by comprising hardware and software, wherein the hardware mainly includes a blindfold plate, an infrared ray transmitter, an infrared ray receiver, a handheld controller, a processor, a bar code reader and a sighting mark displayer. The software installed in the processor mainly includes an identity recognition module, a sighting mark displaying module, a sighting mark progressive module, a dynamic distance measuring module, a vision conversion module and a storage module. The electronic vision detecting system displays different sighting marks through the sighting mark displayer, a tested person can freely select the distinguishing time and a checking distance within a certain range without participation of a doctor and meanwhile cannot know a specific vision vale represented by a vision line being detected in the detection process, and information difference of a testing person and the tested person is eliminated. The electronic vision detecting system adopts the double-blind design, automatically performs sighting mark selection/vision testing through the controller and accordingly reflects the real vision of the tested person accurately.

The invention discloses a portable terminal capable of visual acuity measurement and a measurement method thereof, which belong to the scope of visual acuity detection tools and detection technology. The portable terminal for visual acuity measurement is composed of a distance measurement unit, a memory unit, a voice recognition unit and a display unit respectively connected to a control unit. The perception process of measuring the distance between the portable terminal and the vision tester by the distance measurement part; the vision measurement process of storing the vision measurement value formed by text and graphics and the sound data corresponding to the vision measurement value in the memory part; The process of recognizing the voice response of the above-mentioned visual acuity measurement value; the control unit controls all the actions of the above-mentioned visual acuity measurement; the display unit displays the display process of the visual acuity measurement value according to the control of the above-mentioned control unit, and displays the visual acuity of the tester based on the visual acuity measurement . Therefore, there is an effect of improving usability. Furthermore, it is possible to continuously check changes in the examiner's vision through the mobile terminal.

The invention discloses an interactive vision detection system and a vision detection method thereof. The purpose of the interactive vision detection system of the present invention is to provide an interactive vision detection method and system for the shortcomings of the vision detection method and system. The left eye, right eye or both eyes can be specified for testing. The specific method is: the testee wears polarized glasses, and the display that puts the visual target displays the polarized visual target. According to the principle of filtering different polarized light according to the difference between the left and right lenses of the polarized glasses , the left eye can be seen by the left eye, the right eye can be seen by the right eye, and the binocular eye can be seen by both eyes, thus achieving the purpose of specifying the left eye, right eye or both eyes for testing; at the same time, this The method does not need to cover the left and right eyes of a person, which is a more natural vision detection method than covering; this makes the system have the ability of monocular and binocular positioning testing.

The invention provides a children visual acuity testing device and a testing method, used for detecting visual acuity of a tested object. The children visual acuity testing device comprises a display unit, an image pickup unit and a processing unit (10), wherein the display unit is used for displaying a testing pattern; the image pickup unit is used for shooting the testing image observed by the tested object so as to acquire a shot image; and the processing unit is connected to and is used for controlling the display unit and the image pickup unit, and the processing unit is used for storing the shot image and for computing and analyzing so as to obtain the visual acuity of the tested object. The testing device and the testing method disclosed by the invention, by automatically shooting the face of the tested object by virtue of the image pickup unit and by analyzing eye actions, can improve visual acuity testing efficiency, and moreover the visual acuity testing can be more objective.

A vision testing method and apparatus are disclosed, the method including generating an image, modulating the wavefront of the image remote from the patient, relaying the modulated wavefront to a plane nearby, on, or within the patient's eye, varying the modulation of the wavefront based upon patient or operator response, and conveying the value of the wavefront modulation to the operator. The apparatus includes devices for generating an image, modulating the wavefront of the image that is physically remote from the patient, optically relaying the modulated wavefront of the image to a plane nearby, on, or within a patient's eye, varying the modulation of the wavefront of the image based upon patient or operator response, and conveying the value of the continuously modulated wavefront to the operator.