RU2637170C2 - Vision training device - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: vision training device contains an electronic computer, a body with eyepieces, a device for diagnostics of the patient's vision organs state, a lens system designed to vary the optical power, and a test image housed in the body. The lens system configured to change the optical power is represented by two rows of lenses arranged one behind the other, provided with stepping motors controlled by an electronic computer.

EFFECT: application of this invention will improve the effectiveness of training over a longer period of time.

4 cl, 1 dwg

Description

 The invention relates to the field of ophthalmology, and in particular to devices for training and correcting the vision of people with developing myopia and presbyopia.

A known method of wireless control of such devices for the diagnosis of vision, such as, for example, an automatic refractometer and phoropter, using a laptop computer, which transmits diagnostic data and data on the state of the organs of vision. [US 9241621B2, priority date 01/23/2014, publication date 01/26/2016, IPC А61В 3/00, А61В 3/02, А61В 3/028].

A device for training and correcting vision, having two eyepieces for the eyes and the diaphragm, characterized in that it contains a housing with two light channels isolated from each other, and a screen with two symmetrical identical images, while the diaphragm is made with two identical holes, and the centers of the eyepiece, the holes in the diaphragm and the conditional center of the image on the screen are located on each of two intersecting axial lines on which two fixed optical axes of the device are made, coinciding with the opt other axes of the eye [RU 2370246, priority date 12/24/2007, publication date 09/20/2009, IPC A61F 9/00].

The disadvantages of the known devices is the lack of a diagnostic function of the state of the visual apparatus, which does not allow you to track the state of the organs of vision during training and adjust the training program in real time. In this case, manual adjustment of the optical power of the lenses used for training is carried out, which does not provide the necessary smoothness of the change in optical power during the training, the tension and relaxation of the organs of vision occurs sharply, which contributes to overstrain. Another disadvantage is the small range of changes in the distance to the test image, which is limited by the dimensions of the device’s body, which does not allow to achieve a sufficient amplitude of the voltage of the organs of vision when focusing on the image near and at its distance.

As a prototype, a device for training vision was selected, which contains an electronic computer, a case with eyepieces, a device for diagnosing the state of the patient’s organs of vision, a lens system with the ability to change the optical power, which is represented by two liquid lenses, and a test image placed in the case [US 8668334, priority date 02/27/2006, publication date 03/11/2014, IPC АВВ 3/10].

The disadvantages of the prototype is the low quality of the image transmission of liquid lenses due to the fact that there is a high probability of their darkening over time and the manifestation of permanent deformation, and therefore, changes in parameters and the inability to fine-tune, which can lead to a decrease in the efficiency of training of the organs of vision and require frequent replacement of liquid lenses .

The technical problem is to improve the operational characteristics of the device for training vision.

The technical result is the provision of the possibility of automatic training and diagnostics of the state of the organs of vision while maintaining high accuracy for a longer period of time.

The essence of the claimed device is as follows.

The device for training vision includes an electronic computer, a case with eyepieces, a device for diagnosing the state of the patient’s organs of vision, a lens system with the possibility of changing optical power and a test image located in the case. In contrast to the prototype, the lens system with the ability to change the optical power is two rows of lenses arranged one after another, equipped with stepper motors controlled by an electronic computer.

Two rows of successive lenses equipped with stepper motors provide the ability to change the optical power of the lens by moving the lenses relative to each other using stepper motors. Stepper motors, in turn, are connected to an electronic computer, which transmits commands to change the distance between the lenses depending on the state of the patient’s organs of vision and training goals. Each row of lenses includes at least two lenses, at least one of which is equipped with a stepper motor. The step of changing the optical power of diopters can be up to 0.01 dtpr and is regulated by changing the number of lenses and stepper motors in each row.

The test image is a symbol on which the patient concentrates his gaze during training. The image may be presented on a display or on any other digital or paper medium capable of reproducing the image. The device can be additionally equipped with a second test image, which will allow the device to be used for patients with different indicators of the state of the organs of vision in each eye and gradually compare the indicators. The image is fixed, while the symbol is visually for the patient at a distance of 2 m in accordance with the well-known principles of visometry. Visual separation of the image can be achieved by reducing the test image or by using 2 convex lenses for eyepieces and biconcave lenses, while the diameter of the lenses for eyepieces is less than the diameter of the lenses in the lens system, the image is visually flipped for the patient, flipping in the opposite direction by physical image flipping or using a system of plexiglass prisms.

The diagnostic device may be an infrared emitter or a laser that emits infrared images in the form of vertical and horizontal lines on the retina, two dividing prisms and a photodetector that reads the image distorted by the visual organs for transmission to an electronic computer in order to determine the nature and degree of diseases. In this case, the device is connected to an electronic computer, and the diagnostic result is obtained by analyzing the image of the electronic computer. An infrared emitter may be located between the eyepieces and the lens system or between the lens system and the test image, with the prism located between the eyepieces and the lens system. If an infrared emitter or laser is located between the lens system and the test image, it is additionally calibrated in accordance with the degree of distortion of the emitted and read image by the lenses.

The electronic computer is connected to a stepper motor system and a diagnostic device, further includes a device for input and output of data and is intended to control the training process taking into account manually entered user data, training time and goal, as well as received diagnostic data. A device for inputting and outputting data can be made in the form of a display with a keyboard or a touch screen and is designed to display information about the results of diagnostics, the state of the organs of vision during training, the results of the current training of a given patient, the history of changes in indicators and training, data on the forecast of training results process, as well as for entering parameters such as the time and purpose of the workout, and choosing a workout program. The internal memory of the electronic computer contains training programs, and for each particular case according to the diagnostic results, it is possible to manually adjust the training time, their frequency and quantity, time of tension and relaxation of the organs of vision in the training process.

The eyepieces can be made of a polymeric material, for example, rubber or any other material providing a tight fit of the eyepiece to the ocular space and the exclusion of light from the external environment.

Additionally, the device can be equipped with an emphasis for the patient’s forehead, located above the eyepieces, and a signal light located in the field of vision of the patient’s lateral vision, which allows the patient to determine the phase of the training process using lateral vision and track the start of a new phase.

The claimed invention is characterized by the following distinctive features:

- the lens system with the ability to change the optical power is two rows of successive lenses equipped with stepper motors, which eliminates the disadvantages of liquid lenses, which are manifested in the distortion of characteristics over time;

- stepper motors are controlled by an electronic computer, which provides the ability to fine tune the optical power when adjusting the training program.

The above essential features ensure the achievement of a technical result, which consists in providing the possibility of automatic training and diagnosis of the state of the organs of vision while maintaining high accuracy for a longer period of time.

Thus, the inventive device for training vision has new, previously unknown from available sources of information properties, which allows us to conclude that the claimed invention meets the criteria of patentability "novelty" and "inventive step".

The claimed invention can be made of known materials using known means, which allows to judge the compliance of the claimed invention with the patentability criterion of "industrial applicability".

The inventive device is illustrated by the following drawing.

FIG. 1 is a schematic illustration of a device in isometry.

The device for training vision includes a housing 1, a stand for the patient’s head 2, an emphasis for the patient’s forehead (not shown), two eyepieces 3, two rows of lenses 4 equipped with stepper motors 5, two test images with backlight 6, a control module containing electronic a computer 7 with a device for inputting and displaying data 8, and a diagnostic device containing two infrared emitters (not shown), two dividing prisms 9 and a photodetector (not shown). The eyepieces 3 are equipped with convex lenses with a diameter of 12 mm, and the rows of lenses 4 consist of biconcave lenses with a diameter of 35 mm. The housing 1 of the device is equipped with a warning light 10 located in the field of vision of the lateral vision of the patient.

The inventive device operates as follows.

The patient places the chin on a special stand 2, resting his forehead against the forehead support (not shown) so that the eyepieces 3 fit snugly against the peri-ocular space. A device for diagnosing by emitting an infrared image through dividing prisms 9 onto the patient’s retina and reading the reflected image by a photodetector (not shown) transmits information to an electronic computer 7, which determines the degree and nature of the patient’s disease and outputs information to the input and output device 8, after which the medical specialist selects a vision training program and adjusts it depending on the diagnostic results, and also sets the goal of the training. The electronic computer 7 adjusts the optical power of each row of lenses 4 with the help of stepper motors 5 so that the patient clearly sees the test image 6. In this case, the lens movement step is from 0.028 to 10 mm. After that, the signal light 10 notifies the patient about the beginning of the training process, the electronic computer 7 changes the optical power of each row of lenses 4 using stepper motors 5 so that the clarity of the image decreases, while the patient needs to maintain the initial clarity of the test images 6 by muscle tension organs of vision. The diagnostic device monitors changes in the state of the organs of vision and transmits data to the electronic computer 7 to adjust the training program for a specific patient, taking into account its physiology and condition of the organs of vision. After some time, the tension of the muscles of the organs of vision, the electronic computer 7 changes the optical power of each row of lenses 4 using stepper motors 5 so that the patient again clearly sees the test image 6, which is accompanied by relaxation of the muscles of the organs of vision of the patient. Depending on the chosen training program, several of the above cycles are performed with short intervals between them, after which rest is made with a long time interval for complete relaxation of the organs of vision and the necessary number of cycles, determined by the patient's capabilities, is repeated. At the end of the training, the device for inputting and outputting data 8 displays the results of the training, as well as a forecast of further progress, which determines the number of training sessions and their frequency to achieve the desired result.

Claims (5)

1. A device for training the vision, containing an electronic computer, a case with eyepieces, a device for diagnosing the state of the patient’s organs of vision, a lens system with the ability to change the optical power and a test image located in the case, characterized in that the lens system with the ability to change the optical power It consists of two rows of successive lenses equipped with stepper motors controlled by an electronic computer. 2. The device according to p. 1, characterized in that the eyepieces are convex  lenses. 3. The device according to claim 1, characterized in that biconcave lenses are installed in the lens system. 4. The device according to claim 1, characterized in that the diameter of the lenses for the eyepieces is less than the diameter of the lenses in the lens system.

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