SU766576A1 - Apparatus for studying eye movement - Google Patents

Description

The invention relates to medical technology, namely to ophthalmology, and is intended to investigate, evaluate and direct the action of the external muscles of the eye with diagnostic purposes. A device for examining eye movement is known that contains an infrared radiation source, an optical lens system, photoelectric converters, an electronic system for shifting reflected signals Q An infrared radiation flux, reflected from an eye block, passes through the optical system and enters a photoelectric converter connected to an electronic displacement system of reflected signals .. The angular movement of the eye block is correlated with a change in the angle of incidence of the infra red flux a on the photoelectric s transmitter, which ultimately leads to a change in the electric signal output from the photoelectric transducer, and working out the corresponding electronic system it confluency reflected signals. However, the duration of the study, which is associated with the difficulties of setting up the device before testing, and the lack of a comparative assessment of the oculomotor apparatus in binocular vision limit the use of such a device. A device for studying eye movement is known, which contains polarization glasses, two color test projectors, a projection screen and a C23 power source. The medical staff of the projector flashes at certain points of the screen control, color stimulus of red (green) color. The test student in polarization glasses with his projector combines a light. Test of green (red) color with a control one. The doctor visually determines the position of each control stimulus and test on the screen, transfers them to the form. According to the form, the state of the glauled motor is estimated. However, the known device has the disadvantages as follows: the workload of the medical staff is high; study duration; low accuracy of research and evaluation; the considerable weight and low reliability of the apparatus, which substantially impede children's studies.

The aim of the invention is to reduce the research time by increasing the accuracy and automating the assessment of the strength and direction of the external muscles of the eyes.

The goal is achieved by the fact that in the device containing polarization glasses and the screen are entered blocks of interfacing, fixed memory, addressing of fixed memory, scaling, identification of the screen identification being tested, generation of codes, Start key, output register, driver control codes, registration blocks, interface and input. Moreover, the screen is made in the form of a color television receiver, which is connected to the output of a permanent memory unit through an interface unit whose input is connected to the first output of the control codes, the second, third and fourth outputs through the serially connected scaling unit and addressing unit of the fixed memory. which are connected respectively to the control inputs of the interface unit, the registration unit and the output register, the other two inputs of which are connected to the outputs of the test identification unit and the block generating codes whose input through the screen identification block is connected to the second output of the subject's identification block, the third output of which is connected to the first input of the control code generator, the second input of which is connected to the output of the Start key, and the third input to the output of the input block, the first output of the output register and the second output of the code generation unit is connected to the inputs of the interface unit, and the second and third outputs of the output register are connected to the inputs of the registration unit and the interface interface.

The drawing shows a structural diagram of the device for the study of eye movement.

The device for examining eye movement contains a color television receiver 1, a conjugation unit 2, a permanent memory unit (PP), a permanent memory addressing unit 4, a scaling unit 5, a test identification unit b, a screen identification unit 7, a block 8 form. rovani codes, start button 9, output register 10, control code generator 11, registration block 12 interface block 13, input block 14.

The operation of the device is provided in two modes: in the mode of independent research and in the mode of remote examination by the doctor,

The self-test mode is set by block 14

input, With the help of the latter, the required diameter of the control stimuli, the color and the sequence of their presentation are also specified.

The patient omits the token in the test identification block 6. Identification b by one output starts block 7 of screen identification, and the second output starts the driver AND control codes. The latter forms a code combination for the launch of the scaling unit 5. The scaling unit 5 outputs the code in the permanent memory addressing unit 4. The last selects the coordinates of the color stimulus recorded in block 3 (PP) and outputs them to the entrance to block 2 of the interface with the television channel. On the screen of receiver 1, the first control stimulus is highlighted in the scaling block defined by block 5 and block 3 (PP) of the square of the screen of the corresponding color, for example red.

The patient in the floor of the goggles touches the floor of the false-panel of the screen identification block 7 with a finger. From the output of the screen identification unit 7, a signal is supplied to the code generation unit 8. Block 8 converts it into a control code. This code is fed to the input of block 2 mate. At the same time, a color test (green) with the center corresponding to the coordinates of the location of the finger on the false-panel field of the identification block 7 is displayed on the screen of the television receiver. Moving the patient's finger across the field of the false-panel of the identification block 7 corresponds to moving the color test across the screen field of the television receiver 1. The patient is asked to combine the color test with the control stimulus and press the Start button 9 when combined. With; In this case, the signal from the 9 Start key is fed to the driver 11 of the control codes. By this signal, the driver

11 will form a series of code combinations which, by entering the output register 10, will overwrite the positions of the color test from the formation unit 8 to the output register 10, and from the identification unit 6, the patient's identification data, at the input to the unit. 5 the next control stimulus is displayed on the screen of the receiver 1 on the scale of the scaling and further along the circuit the addressing block PP — block PP — block mapping 2. The consistency of patient testing with this stimulus is similar to that described above.

After checking for all control stimuli sewn into the PC, the driver of the control codes generates code combinations that affect: block 5 and the screen of the television receiver 1; to block input

Claims (2)

12 registrations; (in this case, the results of the study, the patient's identification data is copied from the register 10 output by the input by the registration unit 12, the block 12 stamps them on a blank of a common format) and the input of the block 13 and the interface sa.- (at the same time, the above information of the register 10 ; one is rewritten into interface block 13 for transfer to a shared-use trunk). To perform a visual comparative analysis, the doctor acts on the corresponding category of the input block 14. In this case, a signal from the output is input into the driver 11. The control code generator 11 generates code combinations that affect the output register 10. The results of the examination of the patient from the output register 10 through the interface unit 2 are output to the screen of the television receiver; Blocks 5, 4, 3, 2 are sequentially displayed on the screen of a television receiver and control stimuli and coordinate grid for direct evaluation. If careful patient examinations are necessary, the doctor acts on the corresponding key of the input block 14 and switches the device for examination: No eye movement in remote examination mode. In addition, each control stimulus is displayed on the screen of receiver 1 by the corresponding key of input block 14. The positive effect from the use of the proposed device is to reduce the time spent studying the oculomotor 1 "eye of the visual analyzer, increasing the objectivity of the research, expanding the function of the oval possibilities of automating the research processes and recording the results. The application of the invention in health care will reliably and quickly assess the strength and direction of the outer 1 'eyes, which is especially important for the topical diagnosis of squint and the choice of an adequate method of treatment. An apparatus for examining eye movement, comprising polarization glasses, and a screen, characterized in that, in order to reduce the investigation time by increasing accuracy and automating the assessment of the strength and direction of the external eye, the conjugation blocks are inserted into it. memory, addressing of permanent memory, scaling, identification of the subject, screen identification, forg 1 code, as well as output register, driver of control codes, registration blocks, interface and input, keys a Start, the screen being designed as a color television receiver, which is connected via an interface unit to the output of a permanent memory unit, the input of which is connected to the first output of the control codes through the serially connected scaling unit and addressing unit of the permanent memory, the second , the third and fourth outputs of which are connected respectively to the control inputs of the interface unit, the registration unit and the output register, the other two inputs of which are connected to the outputs of the identification unit will be tested Wow and the code generation unit, the input of which through the screen identification block is connected to the second output of the block idi (| 1 test data, the third output of which is connected to the first input of the driver control codes, the second input of which is connected to the output of the Start key, and the third input to the output of the input unit, the first output register output and the second output of the code shaping unit, and the second and third outputs of the output register are connected to the inputs of the registration unit K of the interface unit. Sources of information taken into account in examination 1, France Patent 2347020, cn, A 61 B 3/02, published. 1975. 2. Otoshimokorimetr OKM-1 Passport MT446-000-OPS, USSR, published. 1973 (prototype).