Eccentric fixation visual training system for optimizing concave channel of macular center

Abstract

The invention relates to an eccentric gaze visual training system for optimizing a concave channel in the center of a macular, and aims to assist in correcting eccentric gaze. The system comprises a training sighting mark display module and an input module. The training sighting mark display module is used for displaying central fovea guiding sighting marks, the sighting marks are composed of color blocks of at least two colors, and the sizes, color difference values and color saturation difference values of the sighting marks are designed according to gradient changes. The central fovea guides the sighting mark to be displayed through the sighting mark in slow and smooth transition, the color, the saturation, the brightness and the contrast change speed in slow and smooth transition, the sighting mark slow moving mode and different spectral wavelengths matched on different eccentric watching degrees. A paracentral retina inhibition area and an M channel are generated, the excitability of a macular fovea center and a P channel is enhanced, and the purpose of correcting eccentric fixation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vision training, in particular to an eccentric gaze vision training system for optimizing the foveal channel, and is used for assisting in correcting eccentric gaze. Background Art

[0002] Regarding the background technology of the present invention, refer to the technical background described in the patent application with the original application number [2024100592544], entitled "A visual training system for assisting correction of eccentric gaze". Please refer to the relevant description of paragraphs

[0002] to

[0007] on pages [1] to [2] of the specification of the original application. The principle of the correction of eccentric gaze technology disclosed in the original application is that the color saturation and hue perception ability of the retina outside the fovea in a specific spectral frequency band decreases with the increase of the eccentricity of the retina (the degree of distance from the fovea); the fovea guide sight mark designed according to the technology of the original application can gradually increase the difficulty of distinguishing color blocks by continuously reducing the size of the sight mark and reducing the color saturation difference and hue difference between the color blocks on the fovea guide sight mark, thereby prompting the trained eye to use the retinal area with a smaller retinal eccentricity to identify the fovea guide sight mark, gradually approaching and exciting the fovea, and improving its gaze advantage.

[0003] It should be added that in the process of transmitting visual information from the retina to the visual center, there are different types of neural pathways to process different types of information. According to cell morphology and functional characteristics, retinal ganglion cells can be divided into two main categories: P cells (Parvocellular) and M cells (Magnocellular), which correspond to different visual channels. Among them, the visual input of the fovea area tends to be processed through the P channel, while the information of the peripheral retina depends more on the M channel.

[0004] Although the original application provides an effective visual training system for assisting in correcting eccentric gaze, it has been found in actual applications that under certain circumstances (such as when the appearance speed, displacement speed, contrast change speed, saturation change speed, brightness change speed, and color spectrum change speed of the foveal guide sight mark are too fast), the M channel will be excited, thereby weakening the eccentric gaze correction effect, and there is still room for improvement in technology.

[0005] This divisional application aims at the above technical deficiencies and proposes an eccentric fixation vision training system that optimizes the foveal channel to provide a more effective eccentric fixation vision training technical solution. Summary of the invention

[0006] The present invention provides an eccentric fixation visual training system for optimizing the foveal channel, the main purpose of which is to improve the eccentric fixation correction effect in terms of improving the excitability of the P channel and inhibiting the excitability of the M channel by improving the foveal guidance sight mark.

[0007] The system includes: a training sight mark display module, which is used to display the foveal guide sight mark, wherein the foveal guide sight mark is composed of color blocks of at least two colors, and its specified color block size parameters, hue difference parameters between color blocks, and color saturation difference parameters between color blocks are all designed according to gradient changes; an input module, which is used to receive and process the recognition result of the foveal guide sight mark:

[0008] The foveal guiding sight mark is displayed in a gradual and smooth transition manner, and the process goes through the process from the beginning to the complete appearance. The time required from the beginning to the complete appearance is the sight mark display time, and it is characterized in that when the center of the trained eye's gaze point is within 7° of the fovea, the sight mark display time is greater than 1 second. Compared with the P channel, the M channel is more sensitive to rapidly appearing and changing visual targets. The foveal guiding sight mark adopts a gradual and smooth transition display method, which can maintain the excitement of the P channel without causing excitement of the M channel. The closer the eccentric gaze point is to the fovea, the slower the foveal guiding sight mark needs to appear.

[0009] Similarly, when the fovea guides the visual mark to move, the displacement is continuous and smooth, and the speed of the displacement is less than 5° visual angle / second. This slow-moving visual target is not easy to excite the M channel, while the P channel can maintain a high degree of excitation.

[0010] Furthermore, when the center of the trained eye's gaze point is within 3° of the fovea, the color wavelength range of the fovea guide sight mark is limited to between 500nm and 550nm. This color spectrum value range falls within the sensitive range of M cones (green cones). The closer to the fovea, the denser the M cones. This design can more accurately excite the cones in the fovea area to help the fovea produce a fixation advantage.

[0011] Preferably, when the center of the fixation point of the trained eye is within the range of 3° to 4° visual angle of the fovea, the color wavelength range of the fovea guiding sight mark is limited to between 500nm and 690nm. This color spectrum value range covers the color spectrum range to which M cones and L cones are sensitive. Because within the range of 2 to 4 degrees from the fovea, more M cones and L cones are gathered, and there are very few S cones (in the retinal area farther away from the fovea, there are relatively more S cones). This design can expand the color value range of the fovea guiding sight mark to design a more colorful sight mark system, improve training compliance, and at the same time make the fixation point closer to the central area of ​​the macula.

[0012] Preferably, when the color of the color block changes, the color transition is smooth, and the process goes from the beginning of the color change to the complete color change. The time required for the color to change completely is the color change time, and the color change time is greater than 0.5 seconds. The original intention of this design is also to avoid exciting the M channel.

[0013] Preferably, when the color saturation of the color block changes, the saturation transition is smooth, and the process goes from the beginning of the saturation change to the complete saturation change. The time required for the complete saturation change is the saturation change time, and the saturation change time is greater than 0.5 seconds. The original intention of this design is also to avoid exciting the M channel.

[0014] Preferably, when the brightness of the color block changes, in order to smoothly transition the brightness, the process goes from the beginning of brightness change to the complete brightness change, and the time required for the complete brightness change is the brightness change time, and the brightness change time is greater than 0.5 seconds. The original intention of this design is also to avoid exciting the M channel.

[0015] Preferably, the contrast change between two adjacent colors on the foveal guide sight mark is a smooth contrast transition, and the process goes from the beginning of contrast change to complete contrast change. The time required for the complete contrast change is the contrast change time, and the contrast change time is greater than 0.5 seconds. The M channel is more sensitive to drastic contrast changes, and the original intention of this design is to avoid exciting the M channel.

[0016] Furthermore, the foveal guiding sight mark that is being displayed is the original sight mark, and the color corresponding to the wavelength value of the original sight mark plus or minus 30nm is the adjacent color of the original sight mark. The next foveal guiding sight mark that appears and needs to be identified immediately is called the new sight mark. After the trained eye continues to stare at the original sight mark for more than 10 seconds, the color selection range of the new sight mark avoids the adjacent color of the original sight mark. Because after the trained eye continues to stare at a color, color adaptation and afterimage effects will occur, in which the negative afterimage color generated is close to the complementary color of the original target color. If the color value range of the new sight mark includes the adjacent color of the original sight mark, it will reduce the accuracy of the human eye's judgment of the color of the new sight mark, affecting the trainee's recognition accuracy of the new sight mark.

[0017] The present invention can achieve the excitation of P channel and inhibition of M channel through the above design, and further improves the effect of eccentric gaze correction on the basis of the original application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] A corresponding schematic diagram is provided in conjunction with the present invention to further explain and illustrate the structure and working principle of the training system:

[0019] FIG. 1 is a schematic diagram of a foveal guide sight mark display interface according to an embodiment of a vision training system of the present invention. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] FIG. 1 is a schematic diagram of a foveal guide sight mark display interface according to an embodiment of a vision training system of the present invention.

[0022] In order to maintain the completeness of the description of the embodiments of the present invention, the following embodiments are basically completely quoted from the embodiments of the original application. The implementation details of Example 1 (from paragraph

[0022] to paragraph

[0031] ), but the reference numerals have been adjusted and a small number of implementation details have been added. Festival.

[0023] In this embodiment, an Android application is designed based on the principles of the present invention and is installed and run in an Android smartphone (Huawei mate60 Pro is used as the test machine).

[0024] The foveal guide sight mark refers to the whole formed by the screen background 1 and the circle 2, and the screen background 1 and the circle 2 are two color blocks on the foveal guide sight mark. The screen color is designed according to the component logic of the HSB (HSV) color space. Among them, the first level screen background 1 is a uniform orange-red color with a brightness and saturation of 100% and a hue value of 15; the brightness and saturation of circle 2 are both 100%, the radius is 30 mm, and the hue value is 30. The circular icon is a uniform orange-red color with a random position on the screen; on circle 2, the color in the 2.5 mm area close to the edge is smoothly and gradually transitioned with the color of the background area 1. The color of circle 2 has a hue difference compared to the color of the screen background 1.

[0025] Before the training begins, trainees are required to wear their own glasses (to correct their refractive errors), cover their dominant eye, expose the trained eye, and use a stable clamping phone holder to fix the phone on a stable tilted panel so that the trained eye can view the phone screen vertically at a distance of 30 cm from the screen. Each training session lasts 20 minutes in total. Explain the training process to the trainees in advance.

[0026] The training process requires the trainee to find the circle 2 he found on the screen. When the trained eye can recognize the circle 2, directly touch the screen and click on the circle 2, the shape 2 will disappear, which means the recognition is correct. At this time, the input module is the touch screen feedback system of the mobile phone, which is used to receive and process the recognition result of the foveal guide visual mark.

[0027] After circle 2 is correctly identified and confirmed by touching the screen, it will disappear and the training interface for level 2 will be generated. In the training interface for level 2, screen background 1 is a uniform orange-red color with a brightness and saturation of 99% and a hue value of 16; circle 2 is a uniform orange-red circular icon with a brightness and saturation of 99%, a radius of 29 mm, and a hue value of 29, and its position on the screen is random.

[0028] Compared with the first level, the brightness and color saturation of the screen background 1 and the circle 2 in the fovea guide sight mark of the second level are reduced, the size of the circle 2 is reduced, and the hue value difference between the screen background 1 and the circle 4 is reduced (in this link of the present embodiment, one level is added, the brightness and saturation of the two color blocks on the fovea guide sight mark are reduced by 1%, the radius is reduced by 1 mm, and the hue value difference between the two color blocks is reduced by 2. According to this rule, after correct recognition, the next level will continuously reduce the brightness and color saturation of the screen background 1 and the circle 2, continuously reduce the size of the circle 2, and continuously reduce the hue value difference parameters of the screen background 1 and the circle 2; when the recognition is wrong, the next level will maintain the above parameters or slightly increase the above parameters.

[0029] Identification error proves that under the current foveal guide sight mark brightness and size, the trained eye cannot distinguish the difference in color saturation and hue values ​​between different color blocks on the foveal guide sight mark. It may be lower than the color perception threshold of normal human eyes; it may also be that the fovea is still deeply suppressed and cannot be perceived. Identification is correct, proving that under the current foveal guide sight mark brightness and size, the trained eye can distinguish the difference in color saturation and hue values ​​between different color blocks on the foveal guide sight mark.

[0030] Among them, the retinal area closer to the fovea can better identify the color saturation and hue value differences between different color blocks on the fovea guidance sight mark; the peripheral retina cannot distinguish the originally different hues between different color blocks on the fovea guidance sight mark due to the systematic offset of color hue perception relative to the fovea. As the training progresses, the retinal area that does not have the advantage of color recognition ability under the current sight mark size will gradually reduce its neural excitability because it cannot recognize the color saturation and hue value differences between different color blocks on the fovea guidance sight mark, while the retinal area with the advantage of color recognition ability under the current sight mark size will be preferentially excited; as the sight mark size continues to decrease, the excited retinal area will continue to approach the fovea, increase the intensity of the incoming information of the fovea, awaken the development of the nervous system from the fovea to the central visual cortex, and finally allow the fovea to "regain" the gaze advantage.

[0031] So far, the implementation methods listed above are consistent with the original application.

[0032] The significant technical differences between this embodiment and the original application embodiment are as follows:

[0033] 1. The speed of the foveal guidance sight mark:

[0034] From the beginning of the training, the screen background 1 and circle 2 appear gradually and smoothly. The gaze property of the trained eye in this embodiment is 5° temporal to the fovea. According to the algorithm setting of the training application, in the current training stage of the trained eye, the corresponding background 1 and circle 2 take 3 seconds from the beginning to the complete appearance. The so-called gradual appearance and smooth transition refers to the process in which the screen background 1 and circle 2 slowly transition from 100% transparency to opaque (0% transparency).

[0035] 2. Displacement speed of the foveal guidance sight mark:

[0036] Circle 2 appears continuously (no flashing), moves smoothly, and moves slowly. In order not to excite the M channel, the speed of circle 2 displacement is set to 3° visual angle / second.

[0037] 3. The speed of change of the color, brightness, saturation and contrast of the foveal guidance target:

[0038] Each time the level changes, the color, saturation, brightness, and contrast of the color blocks of background 1 and graphic 2 change smoothly and gradually, and slowly. The time required for each of these changes is set to 1.5 seconds. In another embodiment of the present invention, the system is equipped with eye tracking technology. If it is found that the changes in the color, saturation, and brightness of the color blocks of background 1 and graphic 2 induce accurate scanning positioning of the trained eye, it is prompted that these changes take too short a time, and the system will increase the time until it no longer induces accurate scanning positioning of the trained eye.

[0039] 4. Color adaptation and after-image effect processing:

[0040] In the first level, the screen background 1 has a uniform orange-red color with a hue value of 15; the circle 2 has a uniform orange-red color with a hue value of 30. If the trained eye continues to stare at the entire screen without touching the screen (no circle 2 is found) for more than 10 seconds, the color adaptation and afterimage effect mechanism will occur. If the hue values ​​of the background 1 and figure 2 refreshed in the second level are very close to those in the first level, it will be more difficult for the trained eye to make a correct identification. Therefore, according to the application algorithm, the hue values ​​of the background 1 and circle 2 refreshed in the second level will avoid the colors with adjacent hue values ​​in the first level - that is, the hue value of the background 1 in the second level is a uniform sky blue with a hue value of 175, and the hue value of the circle 2 is a uniform cyan blue with a hue value of 190. At this time, the factor that the trained eye is 5 degrees eccentric fixation is also taken into account - the S cone cells rich in the retina around the eccentric fixation point can perceive the blue color spectrum.

[0041] 5. The range of color spectrum corresponding to the foveal guidance mark:

[0042] As the training progresses, when the center of the trained eye's gaze point enters the 3°~4° range with the fovea as the center, the retinal area in this range is rich in M ​​cones and L cones (sensitive to medium and long wavelength colors), while S cones are very few (sensitive to short wavelength colors). The color block chromatogram value range of background 1 and circle 2 is limited to the medium and long wave color spectrum (color wavelength between 500nm and 690nm), and the corresponding hue value is approximately between 0 and 200.

[0043] When the center of the trained eye's fixation point enters the range of 3° with the fovea as the center, the closer it is to the fovea, the higher the proportion of M cones, and the L and S cones begin to decrease sharply. The color block color spectrum value range of background 1 and circle 2 is limited to the medium-wave color spectrum (color wavelength between 500nm and 550nm), and the corresponding hue value is approximately between 60 and 200. In this way, the eccentric fixation point can be weakened step by step, and the fixation advantage of the fovea can be enhanced, which can assist in the correction of eccentric fixation.

[0044] According to other embodiments of the present invention, the background 1 and the circle 2 may be distinguished and identified by saturation difference or brightness difference in addition to the aforementioned hue difference, and the principles are the same.

[0045] In order to save space in reading the technical solution, more specific implementation details and descriptions of other color spaces are not listed one by one.

Claims

1. Optimize the eccentric fixation visual training system of the foveal channel, including: A training sight mark display module is used to display the foveal guide sight mark, wherein the foveal guide sight mark is composed of color blocks of at least two colors, and its specified color block size parameters, hue difference parameters between color blocks, and color saturation difference parameters between color blocks are all designed according to gradient changes; an input module is used to receive and process the recognition result of the foveal guide sight mark; The fovea-guided sight mark appears gradually and smoothly, and the process goes from initial appearance to complete appearance. The time required from initial appearance to complete appearance is the sight mark appearance time. It is characterized in that when the center of the gaze point of the trained eye is within 7° of the fovea, the sight mark appearance time is greater than 1 second.

2. According to the eccentric fixation vision training system for optimizing the foveal channel of claim 1, when the foveal guiding sight mark is displaced, the displacement is continuous and smooth, characterized in that: The speed of the displacement is less than 5° visual angle / second.

3. The eccentric fixation vision training system for optimizing the foveal channel according to claim 1, characterized in that: When the center of the fixation point of the trained eye is within 3° of the visual angle of the fovea, the color spectrum value range of the fovea guiding sight mark is limited to between 500nm and 550nm.

4. The eccentric fixation vision training system for optimizing the foveal channel according to claim 1, characterized in that: When the center of the fixation point of the trained eye is within the range of 3° to 4° visual angle of the fovea, the color spectrum value range of the fovea guiding sight mark is limited to between 500nm and 690nm.

5. According to the eccentric gaze visual training system for optimizing the foveal channel of claim 1, when the color of the color block changes, it is a smooth color transition, and the process goes from the beginning of color change to complete color change. The time required for the color to change completely is the color change time, characterized in that: The color change time is greater than 0.5 seconds.

6. According to the eccentric gaze visual training system for optimizing the foveal channel of claim 1, when the color saturation of the color block changes, it is a smooth saturation transition, and the process goes from the beginning of saturation change to complete saturation change, and the time required for the complete saturation change is the saturation change time, characterized in that: The saturation change duration is greater than 0.5 seconds.

7. According to the eccentric gaze visual training system for optimizing the foveal channel of claim 1, when the brightness of the color block changes, it is a smooth brightness transition, and the process goes through the process of starting to change the brightness to completely changing the brightness. The time required for the complete brightness change is the brightness change time, characterized in that: The brightness change duration is greater than 0.5 seconds.

8. The eccentric fixation vision training system for optimizing the foveal channel according to claim 1, characterized in that: The contrast change between two adjacent colors on the foveal guidance sight mark is a smooth contrast transition. The process goes from the beginning of contrast change to complete contrast change. The time required for the complete contrast change is the contrast change time. It is characterized in that the contrast change time is greater than 0.5 seconds.

9. According to the eccentric fixation vision training system for optimizing the foveal channel of claims 1 and 5, the foveal guide sight mark that is being displayed is the original sight mark, the color corresponding to the wavelength value of the original sight mark plus or minus 30nm is the adjacent color of the original sight mark, and the foveal guide sight mark that is displayed next and needs to be identified immediately is called the new sight mark, characterized in that: After the trained eye continues to stare at the original sight mark for more than 10 seconds, the color selection range of the new sight mark avoids the colors adjacent to the original sight mark.

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