Application of dual-lamp visual training system in the development of devices for treating accommodative myopia

Abstract

This invention discloses the application of a dual-lamp visual training system in the preparation of equipment for treating accommodative myopia, belonging to the field of ophthalmic treatment equipment technology. The system includes a processing host with a control screen, a first lamp panel, and a second lamp panel, each with multiple independently controllable light-emitting points. In use, the processing host controls the control screen at near distance, the first lamp panel at intermediate distance, and the second lamp panel at far distance. The processing host controls the first and second lamp panels to alternately present visual stimuli. After observing the lamp panels, the trainee moves their gaze back to the control screen to respond, causing the trainee's gaze to repeatedly switch between different real physical distances, allowing the ciliary muscle to adjust and relax accordingly. This invention, by alternately presenting task stimuli at different real physical distances, uses gamified tasks to drive the trainee to actively complete the shift between near and far gaze, leading to repeated contraction and relaxation of the ciliary muscle. This solves the problems of existing therapies, such as the inability of glasses to improve accommodative function, the side effects of medications, children's instinctive avoidance of looking into the distance, and the lack of real far-distance stimulation in software training.

Description

Technical Field

[0001] This invention relates to the field of ophthalmic treatment equipment technology, specifically to the application of a dual-lamp visual training system in the preparation of equipment for treating accommodative myopia. Background Technology

[0002] Accommodative myopia (commonly known as pseudomyopia) is one of the most common vision problems in children and adolescents, with its prevalence increasing steadily with school age. Its pathological mechanism involves prolonged close-range eye use (such as reading, writing, and using electronic screens) leading to sustained contraction and spasm of the ciliary muscle, resulting in decreased accommodative power of the lens, manifesting as blurred distance vision while near vision remains normal. At this stage, no organic changes have occurred in the refractive system, making it a reversible stage. However, if the ciliary muscle spasm is not addressed promptly, the continuous compensatory elongation of the axial length will develop into irreversible true myopia.

[0003] The shortcomings of existing intervention methods: (1) Wearing concave lenses – This only corrects the refractive error through optical means, allowing parallel light rays from a distance to focus on the retina, but it does not improve the contraction / relaxation function of the ciliary muscle itself. After wearing glasses, accommodation is still required when looking at near objects, the ciliary muscle spasm persists, and the degree of myopia may still increase year by year.

[0004] (2) Cycloplegic agents (such as atropine eye drops) – These work by blocking the cholinergic innervation of the ciliary muscle, thus forcibly paralyzing the ciliary muscle and causing it to relax. However, they have side effects such as photophobia, blurred near vision, and allergic reactions. Spasms may rebound after discontinuation of the drug, and the safety of long-term use remains controversial.

[0005] (3) Looking into the distance to relax – theoretically the most natural way to relax the ciliary muscle. However, children often feel uncomfortable because their distance vision is already blurred and they cannot see distant targets clearly, so they instinctively avoid looking into the distance. Simply looking into the distance without task guidance cannot guarantee the training duration and frequency, and the effect is difficult to evaluate.

[0006] (4) Visual training software - All visual stimuli are presented on a near screen (usually 30-40cm). The trainee's gaze is always in a near-focused state. There is a lack of real targets that require real-time adjustment, and effective near-far adjustment training cannot be achieved.

[0007] (5) Flipper – A commonly used clinical tool for training accommodation function. By alternately flipping a positive and negative lens, the trainee is forced to switch between the positive lens (relaxation of accommodation) and the negative lens (use of accommodation). Although the flipper can train the ciliary muscle's accommodation flexibility, it has the following limitations: The training process is carried out entirely at close range (usually 40cm), and the trainee's gaze is always focused on the near optotype card. It only involves lens-induced accommodation switching rather than actual distance gaze shift; the operation depends on the trainee to manually flip the lens, making the rhythm difficult to control and monotonous, resulting in low compliance in children; and there is a lack of quantitative assessment, so the trainee cannot know the degree of improvement in their accommodation function.

[0008] Therefore, there is an urgent need for an accommodative myopia treatment method that enables alternating focusing at multiple distances in real physical space, ensures training volume through task-driven methods, has no drug side effects, and is suitable for home use. Summary of the Invention

[0009] (a) Technical problems to be solved This invention aims to solve the problems in existing solutions, such as the inability of glasses to improve accommodative function, the side effects of medication, children's instinctive avoidance of looking into the distance, and the lack of real distance stimulation in software training.

[0010] (II) Technical Solution The present invention provides a visual training system comprising a first lamp panel (2), a second lamp panel (3) and a processing host (1) for use in the preparation of a device for treating accommodative myopia.

[0011] Light panel and screen layout: The control screen (11) of the processing host is placed in front of the trainee at close range (20–40cm, corresponding to daily reading / writing distance), the first light panel is placed at medium range (60–150cm, corresponding to indoor viewing distance), and the second light panel is placed at far range (200–500cm, corresponding to outdoor viewing distance). The three are arranged sequentially at different real physical distances, with the trainee's eyes located at the starting point of the line of sight (55). The angle of the light panels is adjustable to adapt to different environments and the user's line of sight direction.

[0012] Three distance switching modes: Mode 1 – Switching between intermediate and near distances. The visual stimulus is first presented on the intermediate distance first light panel (2). After observing the light information on the light panel, the trainee must shift their gaze to the near distance control screen (11) to answer the question. The ciliary muscle completes a transition from moderate tension (intermediate distance) to high tension (near distance), or vice versa, from tension to relaxation. This mode trains the near-intermediate distance accommodation ability most frequently in everyday indoor scenarios.

[0013] Mode Two – Switching Between Far and Near Views. The visual stimulus is first presented on the far-view second light panel (3). After observing it, the trainee shifts their gaze to the near-view control screen (11) to answer. The ciliary muscle completes a large-scale adjustment transition from complete relaxation (looking at a far distance) to high tension (looking at a near distance). This mode of training has the largest adjustment span and the most significant effect on improving the adjustment range of the ciliary muscle. This mode corresponds to the classroom scene – students frequently switch their gaze between looking at the blackboard in the distance and looking at the book in the distance, which is the most typical far-near adjustment scene for school-aged children.

[0014] Mode 3 – Switching between intermediate and far distances. Visual stimuli are presented alternately on the first intermediate light panel (2) and the second far light panel (3), and the trainee must switch their gaze between the two light panels. The ciliary muscle repeatedly adjusts between moderate tension (looking at intermediate distance) and complete relaxation (looking at far distance). This mode trains the ciliary muscle's ability to finely adjust to a moderate amplitude. This mode corresponds to outdoor activity scenarios – switching between looking at distant objects and observing nearby objects outdoors, helping the ciliary muscle maintain flexible dynamic adjustment in outdoor environments.

[0015] The three modes are randomly alternated by the training program (see...) Figure 2 This ensures that the ciliary muscle is adequately trained across all regulatory ranges, avoiding training adaptation caused by a single mode.

[0016] Three-stage progressive training: The above three modes can be arranged into a progressive training process according to the training difficulty. In the first stage, visual stimuli are presented by the first light board (2) (medium distance), and the trainee observes and answers on the control screen (11); in the second stage, visual stimuli are presented by the second light board (3) (far distance), and the trainee observes and answers on the control screen (11); in the third stage, visual stimuli are presented by the first light board (2) and the second light board (3) at the same time, and the trainee must switch his gaze between the two light boards to obtain information and then synthesize it to arrive at the answer. The three stages progress gradually as the trainee's ability improves.

[0017] Training Mechanism: Visual stimuli (such as the number of lights or specific graphics) are first presented on the first light panel (2) or the second light panel (3). After observing and understanding the information on the light panel, the trainee must shift their gaze back to the near-field control screen (11) and input the answer through the virtual buttons (13) on the screen or the touch screen. The arrangement of the virtual buttons (13) on the screen changes randomly in each training session. The trainee must focus their gaze on the near-field control screen (11) to find the correct button, ensuring the training effect of switching between near and far vision. Each time the gaze shift from "light panel → screen" is completed, the ciliary muscle completes a cycle of adjustment from relatively relaxed (looking at the distant light panel) to highly tense (looking at the near-field control screen).

[0018] Treatment principle: During normal visual activity, the ciliary muscle continuously contracts (for near vision) and relaxes (for far vision) dynamically according to the viewing distance. Prolonged close-range use of the eyes leads to persistent ciliary muscle spasm, which essentially means the accommodative system has lost its ability to dynamically switch between near and far vision – the ciliary muscle is "stuck" in a state of continuous tension and cannot relax effectively.

[0019] This invention works synergistically on three levels to restore the dynamic regulatory function of the ciliary muscle: (1) Physical level – Real distance stimulation. Unlike the near and far effects simulated on the screen, the three distances in this invention are real physical distances (30cm, 100cm, 300cm). The trainee's lens and ciliary muscle must adjust accordingly according to real optical needs, and there is no accommodation-convergence conflict as in simulated training. Compared with the in-plane accommodation switching induced by the lens through flipping, the accommodation response triggered by the change in real distance is closer to the physiological state of daily eye use.

[0020] (2) Behavioral level - task-driven switching. Simply looking into the distance lacks behavioral guidance, and children often find it difficult to persist. This invention embeds the shift of gaze as a necessary part of the task through gamified tasks (which require observing information on a distant light board before answering questions on a close-up control screen). Trainees actively switch between near and far gazes under the drive of scoring, overcoming their instinctive avoidance of looking into the distance.

[0021] (3) Time level - high frequency repetition. Each round of training contains dozens of stimulus presentations. The trainee switches between near and far vision dozens of times in a short period of time. The ciliary muscle gradually recovers its dynamic adjustment ability in the high frequency tension-relaxation cycle, and the spasm gradually subsides.

[0022] The three working together allow the ciliary muscle to gradually recover from a rigid, continuous spasm state to a flexible, dynamic adjustment state that can quickly switch according to the viewing distance, thereby improving the flexibility and amplitude of accommodation and preventing or delaying the development of true myopia.

[0023] (III) Beneficial Effects 1. Directly targeting the core cause of ciliary muscle accommodation dysfunction, it comprehensively improves accommodation flexibility and range through random alternation of three distance modes.

[0024] 2. It covers three common eye-use distance switching scenarios: near-medium, near-far, and medium-far. The training effect is close to real life, and the training results can be directly transferred to daily eye use.

[0025] 3. The game-driven approach encourages trainees to actively switch between near and far gazes, overcoming the problem of children avoiding eye contact when simply looking into the distance, thus ensuring sufficient training.

[0026] 4. By improving the ciliary muscle's accommodative function and eliminating accommodative spasm, the progression of accommodative myopia to true myopia can be effectively delayed, reducing the incidence of true myopia or slowing down the rate of increase in myopia.

[0027] 5. No drug intervention, no side effects, suitable for long-term use by children. The device has a simple structure and can be used in a home environment, eliminating the need for frequent visits to medical institutions. Attached Figure Description

[0028] Figure 1 The diagram shows the arrangement of the three-distance gradient (side view), which illustrates the front-to-back relationship of the control screen (11) (near distance), the first light panel (2) (medium distance), the second light panel (3) (far distance), and the starting point of the line of sight (55) along the same visual axis of the processing host (1). The desktop (6) is the bearing reference surface.

[0029] Figure 2 Explanation diagram for the three switching modes and their adaptation to various life scenarios.

[0030] Figure 3 The schematic diagram of the host (1) shows the layout relationship between the control screen (11) and the virtual buttons (13).

[0031] Explanation of reference numerals in the attached figures Part Number Name 1. Processing host 11 Control Screen 13. On-screen virtual buttons 2 First light panel (center distance) 3. Second light panel (long distance) 21 Light-emitting points 55. Starting point of sight 6 Desktop Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] Example 1: Light counting training (near to medium / far switching) This embodiment takes a calculation-type project (counting lights) as an example to describe the implementation process of improving the ciliary muscle's regulatory function through near-far switching training.

[0034] Trainee: A 9-year-old child diagnosed with accommodative myopia (uncorrected visual acuity of 0.5 in the right eye and 0.5 in the left eye, cycloplegic refraction of -1.50D, accommodative amplitude of 8D, which is lower than the normal value of 11D for the same age), accompanied by symptoms of eye strain such as dry eyes and blurred vision after close-up work.

[0035] Equipment layout: The control screen (11) of the main unit (1) is placed about 30cm away (near distance) on the table (6) in front of the trainee, the first light panel (2) is placed about 100cm away (medium distance), and the second light panel (3) is placed about 250cm away (far distance). The three are arranged in front and behind along the same visual axis (see Figure 1 , Figure 2 The light panel is placed vertically, and the angle can be slightly adjusted according to the trainee's sitting posture.

[0036] Training Process: After the training program starts, the first light panel (2) at a medium distance or the second light panel (3) at a far distance is randomly selected as the presentation position for this round. Several light-emitting points (21) are randomly lit on the selected light panel (the number of lights and the duration are adaptively set by the training program according to the training stage and accuracy). The trainee must observe and see the number of lights lit on the light panel, and then move their gaze from the far light panel back to the near control screen (11). The trainee then enters the number seen on the randomly arranged virtual buttons (13) on the screen (see the host structure for details). Figure 3 The program compares the input value with the actual number of lights that are lit, judges whether it is correct or not, and provides immediate feedback. Each time a response is completed, a visual shift from "light panel to screen" is completed, and the ciliary muscle completes a cycle of adjustment from relaxation (looking at the distant light panel) to tension (looking at the close-up control screen).

[0037] The program automatically switches modes based on the trainee's continuous accuracy: switching between a mid-range light panel and a near-range control screen (Mode 1), switching between a far-range light panel and a near-range control screen (Mode 2), and simultaneously using both mid-range and far-range light panels at a higher difficulty level, requiring the trainee to synthesize information from both light panels before switching back to near-range for answering (switching between mid-range and far-range, Mode 3). These three modes alternate randomly, with continuously varying light distances, number of lights, and duration, providing comprehensive training of the ciliary muscle across various adjustment ranges.

[0038] Training parameters: 30 stimulus presentations per round, one round per day, six days a week. During training, the processing unit records the trainee's accuracy and average reaction time in real time, and presents the results as a score at the end of each round.

[0039] Training Results: After 4 weeks of training, the participant's accommodative amplitude increased from 8D to 10D, and uncorrected visual acuity improved to 0.7. After 8 weeks of training, the accommodative amplitude recovered to 12D (exceeding the normal value of 11D for the same age), uncorrected visual acuity improved to 1.0, and symptoms of eye strain (dry eyes, headache, and reading in disarray) were significantly relieved. The training results indicate that through the systematic near-far switching training in this embodiment, the ciliary muscle's accommodative function was significantly improved, and accommodative myopia was effectively reversed.

[0040] Example 2: Comparison Training for Finding Differences (Near to Medium / Far Switching) This embodiment uses a comparison-type project (difference finding) as an example to describe a training method in which the trainee switches their gaze back and forth between two light panels at different distances to make comparisons, thereby intensely training the ciliary muscle's ability to adjust.

[0041] Trainee: An 11-year-old child diagnosed with accommodative myopia (uncorrected visual acuity 0.4 in the right eye / 0.4 in the left eye, cycloplegic refraction -2.00D, accommodative amplitude 7D), who frequently rubs his eyes and squints when looking at objects.

[0042] Equipment layout: Same as in Example 1. The control screen (11) is placed at 30cm (near), the first light panel (2) is placed at 100cm (middle), and the second light panel (3) is placed at 250cm (far).

[0043] Training Procedure: The training program simultaneously presents a set of light-emitting information on the first light panel (2) at medium distance and the second light panel (3) at far distance (each panel has several light-emitting points lit up, with the number on both sides being equal and the numbers corresponding one-to-one, but one side may have an extra light or a difference in color / brightness). The trainee must switch their gaze back and forth between the two light panels at medium and far distances, adjust the focus to see the distribution of light on each panel, repeatedly compare the differences between the light-emitting information on the two panels to find the difference, remember the number, and then switch their gaze back to the near-distance control screen to input the answer.

[0044] The core of this training lies in the trainee repeatedly switching their gaze between a near-field control screen, a mid-field light panel, and a far-field light panel. Each time they compare the differences between two light panels, they need to adjust their focus back and forth, clearly see both panels separately, and after finding the difference, they need to bring their gaze back to the near-field screen to answer questions on randomly changing virtual buttons. This process causes the ciliary muscle to switch between tension and relaxation at high frequency, resulting in a higher accommodative load than the two-position switching in Example 1, and thus a more significant effect on improving the ciliary muscle's accommodative flexibility.

[0045] Training parameters: 20 stimulus presentations per round of training, 1 round per day, 5 days a week.

[0046] Training Results: After 6 weeks of training, the participant's accommodative amplitude improved from 7D to 10D, the average reaction time for the binocular comparison task decreased from 4.2 seconds to 2.5 seconds, and uncorrected visual acuity improved to 0.6. The participant reported clearer vision of the blackboard and distant road signs in daily life, and a significant reduction in the frequency of eye rubbing and squinting. The training improved accommodative function while enhancing the processing speed of binocular visual information.

[0047] Combining the two embodiments above, this invention embeds dynamic ciliary muscle accommodation training into gamified tasks by alternately presenting task stimuli at different real distances, enabling trainees to actively complete dozens of near and far gaze shifts driven by scores. During training, the processing host records data such as the trainee's accuracy and reaction time in real time, allowing the trainee to intuitively see their progress. The training is considered successful when the trainee's accommodative function and uncorrected visual acuity gradually return to normal levels. Compared with existing solutions, this invention does not rely on drugs or increase eye strain, improving ciliary muscle accommodation function while ensuring compliance and safety, providing a practical and effective non-drug approach for early intervention of accommodative myopia in children and adolescents.

[0048] The embodiments described above are merely preferred embodiments of the present invention and do not limit the scope of protection of the present invention. Specific parameters in each embodiment (such as distance values, training frequency, number of stimulus presentations, etc.) can be adjusted according to the trainee's age, degree of myopia, and training stage. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. The application of a visual training system comprising a first light panel, a second light panel, and a processing host in the manufacture of a device for treating accommodative myopia, wherein the processing host is provided with a control screen, and the first light panel and the second light panel are each provided with a plurality of independently controllable light-emitting points, characterized in that: The visual training system is configured such that: when in use, the control screen is positioned at a first distance in front of the trainee, the first light panel is positioned at a second distance in front of the trainee, and the second light panel is positioned at a third distance in front of the trainee, wherein the first distance < the second distance < the third distance; According to the preset training program, the processing host controls the first light panel and the second light panel to alternately present visual stimuli, so that the trainee's eye focus point actively switches between three real physical distances: near, medium and far, driving the ciliary muscle to repeatedly contract and relax.

2. The application according to claim 1, characterized in that, The first distance is 20–40cm, corresponding to the distance for daily reading and writing; the second distance is 60–150cm, corresponding to the distance for indoor desktop and computer use; the third distance is 200–500cm, corresponding to the distance for outdoor viewing and classroom blackboard viewing.

3. The application according to claim 1, characterized in that, The switching modes of the focal point between different distances include switching between medium and near distance, switching between far and near distance, and switching between medium and far distance. These three modes are randomly alternately called by the training program in a single training session, so that the ciliary muscle can be trained in a non-repetitive manner under the combination of three different adjustment spans: near-medium, near-far, and medium-far, avoiding the training adaptation effect caused by a single distance combination.

4. The application according to claim 1, characterized in that, The training procedure allows the trainee to shift their gaze back to the control screen after observing the visual stimuli presented by the first or second light panel, and to respond using the virtual buttons displayed on the control screen.

5. The application according to claim 4, characterized in that, The training program includes a three-stage training process: in the first stage, visual stimuli are presented by the first light board, and the trainee observes and answers on the control screen. The second stage involves visual stimuli presented by the second light panel, which the trainee observes and then responds on the control screen. In the third stage, visual stimuli are presented simultaneously by the first light panel and the second light panel. The trainee must switch their gaze between the two light panels to obtain information, synthesize the information, and then answer the question on the control screen.

6. The application according to claim 4, characterized in that, The arrangement of the virtual buttons on the control screen changes randomly during each training session.

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