A binocular fusion fixation training method

Abstract

The application discloses a binocular fusion fixation training method, which adopts a binocular fusion frame, an intermediate connecting frame and a Haidinger brush generating device, the intermediate connecting frame is used for connecting the binocular fusion frame and the Haidinger brush generating device together in front and back, the binocular fusion frame comprises a rotating frame, binocular eyepieces, a baffle and a mirror, the binocular eyepieces are arranged on a front plate of the rotating frame, a light-transmitting window is arranged on a back plate of the rotating frame, the baffle is arranged in front of the visual line of one of the eyepiece holes of the binocular eyepieces, and the mirror is arranged on the baffle in front of the visual line of the eyepiece hole, a light-transmitting channel is formed in the intermediate connecting frame, and a trainer can see the Haidinger brush generating device through the unshielded eyepiece hole of the binocular eyepieces, the light-transmitting window and the light-transmitting channel, so that the Haidinger brush is observed. The device can establish a corresponding relationship between the macula fovea of the two eyes in the binocular simultaneous vision and harmony, and improve the fixation accuracy of the two eyes.

Description

Technical Field

[0001] This invention relates to the field of vision training technology, and in particular to a method for training binocular fusion fixation. Background Technology

[0002] The Haidinger's brush fixation training device is a vision training device based on the instantaneous Haidinger's brush effect: when the patient fixates on a strong light through a rotating blue polarized glass plate, a brush-like effect can be continuously seen. This brush effect only appears on the fovea centralis—the most visually sensitive area. The brush effect is a form of "internal vision," where polarized light (with the same polarization direction) creates a unique connection with the fibers of the fovea centralis, resulting in a brush-shaped dark image in the visual cortex. This dark brush corresponds to the macula, the physiological structure of the fundus. The size of the brush corresponds to a 3-4 degree visual angle, roughly equivalent to the width of an adult's outstretched thumbnail forming an image in the eye. By utilizing the principle that the physiological structure corresponding to the light brush is the macula and the center point of the light brush (the bottleneck of the hourglass) corresponds to the fovea of ​​the macula, amblyopic trainees who are using eccentric fixation, eccentric fixation, or peripheral fixation (these non-central fixations are broadly referred to as "eccentric fixation" in clinical practice) can focus on the light brush, thereby strengthening the visual presence of the fovea of ​​the macula. After training, eccentric fixation will be converted into central fixation.

[0003] Currently, existing Haidinger brush fixation training devices (such as patent number 2021214566180) typically include a rotating polarizing disc, a light source, and a visual chart. The light source is located on the back of the rotating polarizing disc, and the visual chart is located at the front of the rotating polarizing disc. The visual chart is made of a translucent material and has patterns on it. When in use, the light source is turned on, and the rotation speed of the rotating polarizing disc can be adjusted according to the trainee's condition. In a dark room, the training device is used with an eyepiece. The trainee fixates on the training device with one eye and can see a rotating brush—that is, a light brush—in the center of the training device. The trainee is made to feel the presence of the light brush (for amblyopic trainees with eccentric fixation, the perceived position of the light brush is off-center from the center of the visual field). Then, the trainee controls the movement of the light brush, allowing the trainee to control the movement of the light brush between the patterns on the visual chart. The subjective "control" of the amblyopic trainee, coupled with the increasingly clear correspondence between the fovea and the light brush, will help the eccentric fixation trainee to locate the fovea as the center of the visual field and transform into central fixation.

[0004] Existing Haidinger brush fixation training devices only train one eye at a time, resulting in limited effectiveness. Therefore, this invention presents a binocular fusion fixation training method that establishes a harmonious correspondence between the fovea centers of both eyes while simultaneously focusing, thereby improving binocular fixation accuracy. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a binocular fusion fixation training method that can establish a harmonious correspondence between the fovea centers of both eyes while simultaneously focusing on each other, thereby improving the accuracy of binocular fixation.

[0006] This invention is achieved through the following technical solution:

[0007] A binocular fusion fixation training method, which uses a binocular fusion frame, an intermediate connecting frame and a Haidinger brush generating device, wherein the intermediate connecting frame is used to connect the binocular fusion frame and the Haidinger brush generating device together.

[0008] The binocular fusion frame includes a rotating frame, binocular eyepieces, a baffle, and a reflector. The binocular eyepieces are mounted on the front plate of the rotating frame, and a light-transmitting window is provided on the back plate of the rotating frame. The baffle is tilted and blocks the line of sight in front of one of the lens openings of the binocular eyepieces. A reflector is provided on the baffle in front of the line of sight of the lens opening. A mounting slot for mounting a vision training pattern card is provided on the side plate of the rotating frame on the side of the reflector.

[0009] A light-transmitting channel is provided on the intermediate connecting frame, allowing trainees to see the Haidinger brush generating device through the unobstructed lens holes, light-transmitting windows, and light-transmitting channels of the eyepieces, thereby observing the Haidinger brush.

[0010] Step 1: First, connect the binocular fusion frame and the Haidinger brush generating device together through the intermediate connecting frame, and install the vision training pattern card on the mounting slot of the side plate of the rotating frame.

[0011] Step 2: The trainee observes through the binoculars with both eyes. One eye observes the reflector on the baffle and reflects the vision training pattern card. At the same time, the other eye sees the Haidinger brush generating device through the light-transmitting window and channel and observes the Haidinger brush. The scenes observed by the two eyes are thus merged. The trainee controls the Haidinger brush to move along the pattern on the vision training pattern card, keeping the Haidinger brush clear during the movement, and performs fixation training.

[0012] Step 3: Disconnect the connection between the intermediate connecting frame and the binocular fusion frame, then rotate the rotating frame of the binocular fusion frame horizontally by 180 degrees, and then reconnect the intermediate connecting frame and the binocular fusion frame. Repeat the steps to allow the trainee to switch between the two eyes for fixation training.

[0013] In the above technical solution, the rotating frame is a rectangular frame structure formed by a front plate, two side plates and a back plate.

[0014] In the above technical solution, the rotating frame is set on two side support plates, and the rotating frame can rotate on the side support plates to achieve a 180-degree flip.

[0015] In the above technical solution, the front and back sides of the intermediate connecting frame are respectively provided with slots. The front side of the intermediate connecting frame is connected to the back plate of the rotating frame of the binocular fusion frame through the slots, and the back side of the intermediate connecting frame is connected to the Haidinger brush generating device through the slots.

[0016] In the above technical solution, the Haidinger brush generating device is a box structure, which contains a driven rotating polarizing disc and a light source.

[0017] In the above technical solution, the Haidinger brush generating device includes a driven rotating polarizing disc and a light source. The light source and the rotating polarizing disc are respectively set in two independent boxes, which makes the distance between the light source box and the rotating polarizing disc box adjustable, thereby adjusting the effect of the Haidinger brush.

[0018] The advantages and beneficial effects of this invention are as follows:

[0019] This invention enables trainees to perform binocular simultaneous vision training. One of the trainees' eyes observes a reflective mirror on a baffle, reflecting the vision training pattern card. Simultaneously, the other eye observes the Haydinger brush generator through a light-transmitting window and channel. The scenes observed by both eyes are thus fused. The trainee controls the Haydinger brush to move along the pattern on the vision training pattern card, keeping it as clear as possible during the movement, thus performing fixation training. During the training, because it involves binocular simultaneous vision, a harmonious correspondence between the fovea centers of both eyes can be established, improving the accuracy of binocular fixation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the binocular fusion frame and intermediate connecting frame of the binocular fusion fixation training device of the present invention.

[0021] Figure 2 This is a schematic diagram of the binocular fusion frame and intermediate connecting frame of the binocular fusion fixation training device of the present invention from another perspective.

[0022] Figure 3 This is a schematic diagram of the binocular fusion fixation training device of the present invention in use.

[0023] For those skilled in the art, other related figures can be obtained from the above figures without any creative effort. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.

[0025] A binocular fusion fixation training device, such as Figures 1-3 As shown, it includes a binocular fusion frame 1, an intermediate connecting frame 2, and a Haidinger brush generating device 3. The intermediate connecting frame 2 is used to connect the binocular fusion frame 1 and the Haidinger brush generating device 3 together.

[0026] The binocular fusion frame 1 includes a side support plate 1.1, a rotating frame 1.2, binocular eyepieces 1.3, a baffle 1.4, and a reflector 1.5. The rotating frame 1.2 is a rectangular frame structure formed by a front plate 1.21, two side plates 1.22, and a back plate 1.23. The two side support plates 1.1 are located on both sides of the rotating frame 1.2, allowing the rotating frame 1.2 to rotate 180 degrees on the side support plates 1.1. The binocular eyepieces 1.3 are located on the front plate 1.21 of the rotating frame 1.2, which has two corresponding through holes to allow the trainee to see the back plate 1.23 of the rotating frame 1.2 through the binocular eyepieces 1.3. The back plate 1.23 also has a transparent... A light window 1.6; the baffle 1.4 is inclined and blocks the line of sight of one of the lens openings of the binoculars 1.3. A reflector 1.5 is provided on the baffle 1.4 in front of the line of sight of the lens opening. A mounting groove 1.7 for mounting a vision training pattern card is provided on the inner wall of the side plate 1.22 of the rotating frame 1.2 on the side of the reflector 1.5. In use, a vision training pattern card 1.8 is installed in the mounting groove 1.7. One of the trainees' eyes observes the reflector 1.5 on the baffle 1.4 through the blocked lens opening. The reflector 1.5 reflects the vision training pattern card 1.8, so that one of the trainees' eyes can see the vision training pattern card 1.8.

[0027] The intermediate connecting frame 2 has slots 2.1 on both its front and back sides. The front side of the intermediate connecting frame 2 is connected to the back plate 1.23 of the binocular fusion frame 1 through the slots (the back plate 1.23 has a locking head 1.9 that mates with the slots 2.1). The back side of the intermediate connecting frame 2 is connected to the Haidinger brush generating device 3 through the slots (the Haidinger brush generating device 3 also has a locking head that mates with the slots). A light-transmitting channel 2.2 is provided on the intermediate connecting frame 2. This light-transmitting channel 2.2 is opposite to the light-transmitting window 1.6 on the back plate 1.23 of the binocular fusion frame 1. The trainee can see the Haidinger brush generating device 3 through the other lens opening of the binocular eyepiece 1.3 (i.e., the unobstructed lens opening), the light-transmitting window 1.6, and the light-transmitting channel 2.2, thereby observing the Haidinger brush.

[0028] Furthermore, the Haidinger brush generating device 3 is a box-shaped structure, inside which is a driven rotating polarizing disc and a light source. Alternatively, the light source and the rotating polarizing disc can be placed in two separate boxes, which allows the distance between the light source box and the rotating polarizing disc box to be adjusted, thereby adjusting the effect of the Haidinger brush.

[0029] The method for binocular fusion fixation training using the aforementioned binocular fusion fixation training device is as follows:

[0030] Step 1: First, connect the binocular fusion frame 1 and the Haidinger brush generating device 3 together via the intermediate connecting frame 2 (see...). Figure 3 And install the vision training pattern card 1.8 on the mounting slot 1.7 of the side plate 1.22 of the binocular fusion frame 1.

[0031] Step 2: The trainee observes through binocular eyepieces 1.3 with both eyes. One eye will see the reflector 1.5 on the baffle 1.4, reflecting the vision training pattern card 1.8. Simultaneously, the other eye will see the Haidinger brush generating device 3 through the light-transmitting window 1.6 and light-transmitting channel 2.2, observing the Haidinger brush. The scenes observed by both eyes are thus merged. The trainee controls the Haidinger brush to move along the pattern on the vision training pattern card 1.8, keeping it as clear as possible during the movement, thus performing fixation training. During the training, because it involves binocular simultaneous vision, a harmonious correspondence between the fovea centers of both eyes can be established, improving the accuracy of binocular fixation.

[0032] Step 3: Disconnect the connection between the intermediate connecting frame 2 and the binocular fusion frame 1, then rotate the rotating frame 1.2 of the binocular fusion frame 1 by 180 degrees horizontally, and then reconnect the intermediate connecting frame 2 and the binocular fusion frame 1. Repeat step 2 to enable the trainee to switch between the two eyes for fixation training.

[0033] The present invention has been described above by way of example. It should be noted that any simple modifications, alterations or other equivalent substitutions that can be made by those skilled in the art without creative effort without departing from the core of the present invention fall within the protection scope of the present invention.

Claims

1. A binocular fusion fixation training device, characterized in that: It includes a binocular fusion frame, an intermediate connecting frame, and a Haidinger brush generating device. The intermediate connecting frame is used to connect the binocular fusion frame and the Haidinger brush generating device together. The binocular fusion frame includes a rotating frame, binocular eyepieces, a baffle, and a reflector. The binocular eyepieces are mounted on the front plate of the rotating frame, and a light-transmitting window is provided on the back plate of the rotating frame. The baffle is tilted and blocks the line of sight in front of one of the lens openings of the binocular eyepieces. A reflector is provided on the baffle in front of the line of sight of the lens opening. A mounting slot for mounting a vision training pattern card is provided on the side plate of the rotating frame on the side of the reflector. A light-transmitting channel is provided on the intermediate connecting frame, through which the Hadinger brush generating device can be seen through the unobstructed lens holes, light-transmitting windows, and light-transmitting channels of the eyepieces. The rotating frame is a rectangular frame structure consisting of a front plate, two side plates, and a back plate. The rotating frame is set on two side support plates and can rotate on the side support plates to achieve a 180-degree flip. The intermediate connecting frame has slots on both its front and back sides. The front side of the intermediate connecting frame is connected to the back plate of the rotating frame of the binocular fusion frame through the slots, and the back side of the intermediate connecting frame is connected to the Haidinger brush generating device through the slots.

2. The binocular fusion fixation training device according to claim 1, characterized in that: The Haidinger brush generating device is a box-shaped structure, inside which is a driven rotating polarizing disc and a light source.

3. The binocular fusion fixation training device according to claim 1, characterized in that: The Haidinger brush generating device includes a driven rotating polarizing disc and a light source. The light source and the rotating polarizing disc are respectively set in two independent housings, so that the distance between the light source housing and the rotating polarizing disc housing is adjustable, which can adjust the effect of the Haidinger brush.

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