Multi-brightness visual navigation test field

Abstract

The present invention relates to a multi-luminance visual navigation test field for performing a vision test on a test subject. The multi-luminance visual navigation test field comprises: a test map, which can be operated to form a plurality of test scenes, each of which is provided with a preset walking route; a plurality of static obstacles, which are arranged on the test map and are used to form obstacles on the test map to hinder the test subject's progress; and a light source assembly, which is used to provide a plurality of light intensities. The multi-luminance visual navigation test field solves the problem in the prior art that the route design of the MLMT scheme is a full white background and arrows are used to indicate the direction of travel, but since most RP patients have extremely low vision and show decreased panretinal light sensitivity mainly due to rod cell damage, the problem that patients have difficulty distinguishing route markings and thus have difficulty in detection is solved. The multi-luminance visual navigation test field has a wide range of applications, low cost and higher detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of vision detection, in particular to a multi-brightness vision navigation test field. Background Art

[0002] The Multi-Luminance Mobility Test (MLMT) requires participants to navigate obstacles and independently and accurately follow a designated route within a limited time and under varying lighting conditions. During the MLMT, participants are required to follow arrows on the ground while avoiding obstacles within or near the path, step over raised steps, and identify a door or similar sign at the end of the test.

[0003] However, the route in the MLMT scheme is designed with a completely white background and arrows to indicate the direction of travel. However, since most RP patients have extremely low vision and show decreased panretinal light sensitivity mainly due to rod cell damage, it is difficult for patients to distinguish route signs, resulting in detection. Summary of the Invention

[0004] Based on this, it is necessary to provide a visual navigation test field with a wider range of applications and more accurate detection results to address the above technical issues.

[0005] An embodiment of the present invention provides a multi-luminance visual navigation test field for performing a vision test on a test subject, wherein the multi-luminance visual navigation test field includes:

[0006] A test map, wherein the test map can be operated to form a plurality of test scenarios, each of which is provided with a preset walking route;

[0007] a plurality of static obstacles, the plurality of static obstacles being arranged on the test map and being used to form obstacles on the test map so as to hinder the tester from moving forward;

[0008] The light source assembly is used to provide multiple lighting intensities.

[0009] In one embodiment, the test map includes a start point and an end point;

[0010] In any of the test scenarios, starting from the starting point, the end point can only be reached via the preset walking route.

[0011] In one embodiment, the test map is composed of at least two floors of different colors, and a variety of test scenes are formed by adjusting the combination of floors of different colors.

[0012] In one embodiment, the preset walking route is formed by splicing a plurality of floors of the same color, and the color of the floor constituting the preset walking route is different from the color of other floors.

[0013] In one embodiment, the test map is a display screen, and multiple test scenarios are formed by the content displayed on the display screen.

[0014] In one embodiment, the static obstacles include at least: a blue trash can, an orange three-layer foam box, a red three-layer foam box, an orange one-layer foam box, a yellow triangular foam box, yellow raised foam, a blue railing, and a white railing.

[0015] In one embodiment, the yellow raised foam, the blue railings, and the white railings are arranged on the preset walking route for the tester to cross.

[0016] In one embodiment, the blue trash can, the orange three-layer foam box, the red three-layer foam box, the orange one-layer foam box, and the yellow triangular foam box are arranged on one side of the preset walking route.

[0017] In one embodiment, the multi-luminance visual navigation test field is a closed room;

[0018] The light source assembly includes a plurality of ceiling light strips and a plurality of side light strips. The plurality of ceiling light strips are arranged on the top wall of the room, and the plurality of side light strips are arranged on the side walls of the room.

[0019] In one embodiment, the multi-brightness visual navigation test field further includes at least two camera devices, and the camera devices are used to perform audio and video recording of the test process.

[0020] The present invention provides a multi-luminance visual navigation test field for performing vision tests on testers. The multi-luminance visual navigation test field comprises: a test map, which can be operated to form a plurality of test scenes, each of which is provided with a preset walking route; a plurality of static obstacles, which are arranged on the test map and are used to form obstacles on the test map to hinder the tester's progress; and a light source assembly, which is used to provide a plurality of light intensities. The multi-luminance visual navigation test field solves the problem in the prior art that the MLMT scheme route design is a full white background and arrows are used to indicate the direction of travel, but since most RP patients have extremely low vision and show decreased panretinal light sensitivity mainly due to rod cell damage, patients have difficulty distinguishing route markings, resulting in detection difficulties. The multi-luminance visual navigation test field has a wide range of applications, low cost and higher detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 Schematic diagram of a multi-brightness visual navigation test field in one embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a multi-brightness visual navigation test field in another embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a light source assembly in one embodiment of the present invention;

[0025] Figure 4 A schematic diagram of brightness testing in one embodiment of the present invention;

[0026] Figure 5 This is a scoring rule chart in one embodiment of the present invention. DETAILED DESCRIPTION

[0027] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive disclosure of the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] It will be understood that the terms "first", "second", etc. used in the present invention may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element.

[0030] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intervening element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc., if there is transmission of electrical signals or data between the connected objects.

[0031] As used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include", "comprising", "having", etc. specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0032] Inherited retinal degenerations (IRDs) are the most common and devastating ophthalmic genetic disorders, with a global prevalence of approximately 1 in 3,000. They are a major cause of irreversible blindness in children and working-age individuals. Most IRDs are caused by single gene mutations, with complex clinical phenotypes and diverse genetic mutation patterns. Currently, over 270 pathogenic variants in nuclear and mitochondrial genes have been linked to IRDs, primarily including retinitis pigmentosa (RP), Leber congenital amaurosis (LCA), Usher syndrome, and cone-rod dystrophy. These IRDs can cause progressive photoreceptor dysfunction, ultimately leading to vision loss.

[0033] my country is a country with a high incidence of IRDs, with a large patient base, estimated to be over 1.3 million, and an urgent need for treatment. RP is the most common hereditary blinding retinal degeneration disease, accounting for about 40% of IRDs. [4] . In general, RP patients suffer from retinal cell degeneration due to genetic defects. The rod cells among the photoreceptor cells are the first to show functional impairment and the degree of damage is the most severe, which is manifested as a significant decrease in sensitivity to light; at the same time or subsequently, the cone cells and / or retinal pigment epithelium (retinal pigment epithelium) cells in the photoreceptor cells are affected, which manifests as decreased visual function, color vision and impaired spatial visual acuity. In the early stage, patients show "night blindness" corresponding to the representative pathological changes of rod cell damage. Even under normal daytime lighting conditions, it is difficult for them to carry out daily activities, and then peripheral visual field defects occur, and finally central vision damage or even legal blindness develops, which imposes a heavy burden on the patient's family and society. It is worth noting that different types of RP have significant phenotypic heterogeneity and genetic heterogeneity, and their respective pathogenesis, disease progression and inheritance mode or type are also significantly different.

[0034] In recent years, innovative therapies including gene supplementation, gene editing, microelectrode arrays, and cell transplantation have emerged, giving hope to patients with IRDs who were previously untreatable. However, because IRDs, represented by RP, have significant clinical and genetic heterogeneity and most patients have severe visual impairment, there is a lack of visual function testing methods or alternative indicators suitable for low vision patients, which limits clinicians' understanding of the pathological characteristics and progression of the disease. At the same time, most IRDs are rare diseases, and there is a lack of relevant epidemiological and natural history research data to support clinically meaningful, reproducible, and validated endpoint indicators to evaluate the effectiveness and safety of innovative therapies such as gene therapy, and to guide patient population identification, treatment window selection, and efficacy threshold determination.

[0035] The visual impairment of RP patients worsens with the progression of the disease, and almost all patients' vision will decline to below legal blindness in adulthood. This poses new challenges to the visual function evaluation indicators of RP clinical trials. Best corrected visual acuity is the most commonly used visual function evaluation indicator in clinical trials, but because RP patients have extremely poor vision, improvements in visual function (such as improvement in visual field and improvement in retinal light sensitivity) are often difficult to reflect in vision, which poses great difficulties for the clinical development of innovative drugs such as gene therapy. Therefore, exploring sensitive clinical trial evaluation indicators that can intuitively and comprehensively reflect the functional visual changes of subjects is a difficult problem that needs to be solved urgently in the development of innovative drugs such as gene therapy.

[0036] To address this issue, international gene therapy clinical trials are gradually exploring diverse clinical endpoints. In addition to visual acuity, other indicators such as visual field, color vision, pupillary reflex, and retinal light sensitivity are also used to assess post-treatment visual function improvement in patients. Patients with IRDs such as RP and LCA experience progressive visual field loss and decreased light sensitivity, leading to difficulties with mobility and orientation in daily life, manifesting as functional visual impairment. Functional vision assessment includes orientation, obstacle avoidance, driving, and reading. To further assess functional visual impairment in LCA patients, researchers at the Spark team developed a novel efficacy assessment measure, the Multi-Luminance Mobility Test (MLMT), that can directly reflect improvements in visual function. This test has also received FDA approval. In the first confirmatory clinical study of Luxturna, an ophthalmic gene therapy for LCA, the MLMT was used as the primary efficacy assessment measure. Results showed that patients' ability to identify obstacles and navigate in low light levels improved after treatment, reflecting improvements in visual function and quality of life. However, in China, the development of similar assessment methods in this field is currently lacking. The Multi-Luminance Visual Navigation Test (MLVNT) applied to the multi-luminance visual navigation test field of the present invention will make up for this shortcoming. By detecting the movement and orientation ability under visual navigation in a fixed environment (especially a low-luminance environment), it can be used to evaluate functional visual disorders mainly caused by rod cell damage. It is expected to greatly promote the clinical development of innovative drugs such as gene therapy for hereditary eye diseases represented by RP in China.

[0037] Example 1

[0038] Please refer to Figure 1 An embodiment of the present invention provides a multi-brightness visual navigation test field for performing a vision test on a tester. The multi-brightness visual navigation test field includes: a test map 100, a plurality of static obstacles 200 and a light source assembly 300.

[0039] The test map 100 can be operated to form a variety of test scenarios, each of which includes a preset walking route 130. In an embodiment of the present invention, the various test scenarios formed by the test map 100 have different environments. For example, different test scenarios have different environments and preset walking routes. The test is considered successful only if the testee completes the preset walking route 130 in each of the different test scenarios to assess the testee's vision.

[0040] In one embodiment, test map 100 includes a starting point 110 and an end point 120. In any test scenario, there is only one route from starting point 110 to end point 120, and this route is the preset walking route 130. Furthermore, in different test scenarios, the locations of starting point 110 and end point 120 may or may not be the same, but the preset walking route connecting starting point 110 and end point 120 is definitely different.

[0041] In this embodiment of the present invention, test map 100 can be composed of at least two floors of different colors. By adjusting the combination of floors of different colors, various test scenarios can be created. Furthermore, preset walking route 130 is formed by multiple floors of the same color, with the floors forming preset walking route 130 being a different color from the other floors.

[0042] Specifically, in Figure 1 In the test map 100 , the test map 100 is composed of a gray floor and a black floor, and the plurality of gray floors are spliced ​​together to form a preset walking route 130 .

[0043] In addition, a green lawn or other environment may be set in the test map 100 according to actual needs, and the present invention is not limited thereto.

[0044] In the above-mentioned embodiment, the test map 100 is composed of a plurality of floors of different colors spliced ​​together. When the test scene needs to be switched, the splicing form of the floors of different colors needs to be manually changed, which will take a lot of time and manpower. Optionally, in one embodiment, the test map 100 is a display screen set on the ground, and a variety of test scenes are formed by the content displayed on the display screen. Specifically, the test map 100 directly switches different pictures through the screen to form a variety of different test scenes, which is convenient, fast, time-saving and labor-saving. In the pictures of different test scenes displayed on the test map 100, the color of the preset walking route 130 is different from the colors of other parts. Preferably, the color of the preset walking route 130 has a low contrast with other colors.

[0045] Compared with the existing MLMT scheme in which the route is designed with a completely white background and arrows indicating the direction of travel, the present invention adopts a low-contrast route and eliminates arrow indications. This is more suitable for RP patients whose representative pathological feature is rod cell damage. At the same time, it is closer to the patients' daily life scenarios and avoids confusion caused by indicator signs and set route boundaries.

[0046] Multiple static obstacles 200 are set on the test map 100 to form obstacles on the test map 100 to hinder the tester's progress. When the tester is taking a test on the test map 100, a certain number of static obstacles 200 must be avoided to be considered a success.

[0047] In one embodiment, see Figure 2 The static obstacles 200 include at least: a blue trash can 201, an orange three-layer foam box 202, a red three-layer foam box 203, an orange one-layer foam box 204, a yellow triangular foam box 205, yellow raised foam 206, a blue railing 207 and a white railing 208.

[0048] The blue trash can 201, orange three-layer foam box 202, red three-layer foam box 203, orange one-layer foam box 204, yellow triangular foam box 205, yellow raised foam 206, blue railing 207, and white railing 208 simulate obstacles commonly encountered in daily life in China. Furthermore, the yellow raised foam 206 is for the test subject to step on, while the blue railing 207 and white railing 208 are for the test subject to step over. Therefore, the yellow raised foam 206, blue railing 207, and white railing 208 are placed along the preset walking route 130; the blue trash can 201, orange three-layer foam box 202, red three-layer foam box 203, orange one-layer foam box 204, and yellow triangular foam box 205 are placed on one side of the preset walking route 130. When walking along the preset walking route 130, the tester needs to avoid touching the blue trash can 201, the orange three-layer foam box 202, the red three-layer foam box 203, the orange one-layer foam box 204, and the yellow triangular foam box 205, and step over the blue railing 207 and the white railing 208, and step on the yellow raised foam 206. Optionally, the tester can also step over the yellow raised foam 206.

[0049] Preferably, to fully achieve the purpose of visual inspection, in test map 100, blue trash can 201 is 33 cm high, orange three-layer foam box 202 measures 90 cm × 30 cm × 30 cm, red three-layer foam box 203 measures 90 cm × 30 cm × 30 cm, orange single-layer foam box 204 measures 30 cm × 30 cm × 30 cm, yellow triangular foam box 205 is 21 cm high, yellow raised foam 206 measures 5 cm × 30 cm × 30 cm, blue railing 207 is 11 cm high, and white railing 208 is 11 cm high. Furthermore, in test map 100, there are 13 static obstacles 200, 2 steps, 2 static obstacles to be crossed, and the preset walking route 130 includes 7 corners.

[0050] By localizing the obstacle configuration within and outside the preset walking route 130 within the test map 100, improvements have been made to better reflect the types of obstacles encountered by the Chinese population in daily life, aligning with their actual daily experiences and improving visual detection effectiveness. Furthermore, the size and number of obstacles / steps within the route and those outside the route have been clarified and standardized, enabling the MLVNT protocol to be standardized and reproducibly tested across multiple clinical trial centers.

[0051] Please refer to Figure 3 In an embodiment of the present invention, the light source assembly 300 is used to provide a variety of light intensities. The tester needs to walk in different test scenes under different light intensities to comprehensively judge the tester's vision test results.

[0052] In one embodiment, the multi-brightness visual navigation test field is a closed room. The light source assembly 300 includes multiple ceiling light strips 320 and multiple side light strips 310. The ceiling light strips 320 are installed on the top wall of the room, and the side light strips 310 are installed on the side walls of the room. Both the ceiling light strips 320 and the side light strips 310 are stepless dimming light strips, which can achieve fine adjustment of light intensity.

[0053] By combining multiple light intensities and multiple test scenarios, and changing to a new test scenario after the tester is familiar with the light intensity, it is possible to avoid the tester from engaging in learning behavior and memorizing the preset walking route, which would affect the accuracy of the test results.

[0054] In addition, in the embodiment of the present invention, the multi-luminance visual navigation test field further includes at least two camera devices 400, and the camera devices 400 are used to record the audio and video of the test process.

[0055] The visual test is conducted using the multi-luminance visual navigation test field described above. The test involves identifying the direction of a light-colored block route, stepping over steps, advancing over obstacles, and completing a preset walking route while avoiding obstacles within or near the preset walking route. All of this relies on functional vision. The design is designed to quantify the participant's ability to move, navigate, and avoid obstacles in different lighting environments (including very low light levels), integrating assessments of visual acuity, visual field, and light sensitivity. A person with normal vision can complete the entire test model at 1 lux (the lowest light level).

[0056] The test subject needs to complete the test process under the specified light intensity. The number of obstacles collided in a single test shall not exceed 5, and it must be completed within 180 seconds. After 40 minutes of dark adaptation, the test subject is tested with one eye (covering the non-test eye with an eye mask) and both eyes respectively. The test starts from the lowest light level after each change of eye. When the test subject cannot complete the test at that light level, the light level is gradually increased. Finally, the test process for that eye is ended after the test subject completes the route and does not meet the failure criteria. After completing each test, the test subject needs to wear an eye mask for a short rest to maintain dark adaptation. During this period, the tester will gradually increase the current light level to the next light level before continuing the test. During the entire process, each tester will be tested in up to 12 test scenes and walk 12 preset walking routes. The test order is monocular first and then binocular. Each eye (left eye, right eye, binocular) is tested on up to 4 different routes and multiple light levels (at least two and at most seven). The paths and obstacles should be randomly changed according to the predetermined plan after changing the eye or when the tester attempts the current test and adjusts the light level.

[0057] The operator should give clear start and stop instructions to the test subject, and record the time taken for each test, the number of obstacles hit, and whether the test subject deviated from the route. The operator should not provide any verbal or physical instructions to the test subject throughout the test.

[0058] The entire test was recorded with audio and video by two independent cameras positioned diagonally across the test area to ensure that every detail of the test was captured accurately. The recorded videos were then scored by independent, blinded raters who assessed speed and accuracy according to a predetermined scoring criteria.

[0059] Before the first MLVNT test, participants undergo a practice test. During practice, the test uses a layout different from the 12 routes used in the official test (including one obstacle that can be stepped on, one obstacle that can be easily stepped over, and one obstacle of moderate height). The tester exposes the participant to varying light levels to ensure they are fully familiar with the test. Practice testing is performed binocularly, with an additional monocular test if necessary (allowing participants to retain any corrective lenses).

[0060] The lighting inspection of the test environment should be completed before each test. Two testers hold two lighting testers and conduct a step-by-step lighting test at five fixed points in the environment. Figure 4 and record the value.

[0061] By testing subjects under various lighting conditions and assessing the lowest light level at which they can complete the test, the subject's visual function is evaluated and reflected. This model provides a comprehensive and meaningful overall approach for visual assessment related to the efficacy and safety of innovative drugs such as gene therapy, including overall functional vision and the subject's overall performance, and is suitable for visual function assessment in patients with retinitis pigmentosa. At the same time, compared with the Spark team's MLMT practice process, the MLVNT uses a more operational and less time-consuming practice process, reducing the possibility of disrupting the patient's dark adaptation and increasing the learning effect.

[0062] The illumination intensity provided by the illumination assembly 300 of the present invention is as follows:

[0063] 1 lux: Equivalent to a moonless summer night; indoor night light;

[0064] 4 lux: Equivalent to half a moon on a cloudless night; a parking lot at night;

[0065] 10 lux: Equivalent to 1 hour after sunset in the city; bus station at night;

[0066] 50 lux: Equivalent to an outdoor train station at night; in a lighted stairwell;

[0067] 125 lux: Equivalent to 30 minutes before sunset; the interior of a train or bus at night;

[0068] 250 lux: equivalent to the interior of an elevator or office corridor;

[0069] 400 lux: Equivalent to an office environment or food court.

[0070] The guidance and scoring rules for the visual test of the present invention are as follows:

[0071] (1) Guidance and stopping rules:

[0072] During the test, the examiner is allowed to guide the subject and encourage them to complete the entire test route. However, the examiner cannot indicate the route direction or obstacle location in any way. The examiner may guide the subject if the subject is at risk of falling or collision and injury. The examiner is not allowed to complete the test if the subject declares that they are unable to continue the test or if the examiner fails to complete the entire route within 180 seconds (excluding 180 seconds).

[0073] (2) Scoring rules:

[0074] A complete set of scoring rules is provided in conjunction with the test process. Figure 5If the tester completes the designated route test under a certain light intensity and does not meet the failure criteria, they will be given a score corresponding to that light intensity level. If the tester still cannot complete the test under the highest light intensity of 400 lux, their score will be defined as 0.

[0075] Collision with obstacles: Obstacles include obstacles outside the inspection route and obstacles under the feet within the inspection route. Collision with obstacles is defined as: the tester's body contacts the obstacle and causes the obstacle to be significantly displaced, or other body parts other than fingers, feet, etc. touch the obstacle (excluding tentative touches, including kicking away obstacles under the feet). Each obstacle is counted once.

[0076] Deviation from the inspection route: The tester steps one foot completely outside the inspection route.

[0077] In summary, the present invention provides a multi-luminance visual navigation test field for conducting vision tests on testers, and the multi-luminance visual navigation test field includes: a test map, which can be operated to form a variety of test scenes, each of which is provided with a preset walking route; a plurality of static obstacles, which are arranged on the test map and are used to form obstacles on the test map to hinder the tester's progress; a light source assembly, which is used to provide a variety of light intensities; it solves the problem that the MLMT scheme route design in the prior art is a full white background and arrows are used to indicate the direction of travel, but since most RP patients are extremely low vision patients and show a decrease in pan-retinal photosensitivity mainly due to rod cell damage, it makes it difficult for patients to distinguish route signs and thus detect problems; it has a wide range of applications, low cost and higher detection accuracy.

[0078] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided by the present invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0079] Throughout this specification, references to terms such as "some embodiments," "other embodiments," and "desired embodiments" indicate that a particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Although these terms are used interchangeably throughout this specification, they do not necessarily refer to the same embodiment or example.

[0080] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A multi-brightness visual navigation test field for performing visual testing on testers, characterized in that: The multi-luminance visual navigation test field includes: A display screen disposed on the ground, the display screen being configured to display a test map, the test map being operable to form a plurality of test scenarios, each of the test scenarios being provided with a preset walking route; a plurality of static obstacles, the plurality of static obstacles being arranged on the test map and being used to form obstacles on the test map so as to hinder the tester from moving forward; A light source assembly, wherein the light source assembly is used to provide a variety of light intensities: The test map includes a starting point and an end point; In any of the test scenarios, starting from the starting point, the destination can only be reached via the preset walking route; Among them, the display screen directly switches different pictures through the screen to form a variety of different test scenes; in different test scene pictures, the color of the preset walking route is different from the colors of other parts, but the color of the preset walking route has a low contrast with the colors of other parts and is not indicated by an arrow, so as to be suitable for RP patients with rod cell damage as a representative pathological feature.

2. The multi-brightness visual navigation test field according to claim 1, characterized in that: The static obstacles include at least: a blue trash can, an orange three-layer foam box, a red three-layer foam box, an orange one-layer foam box, a yellow triangular foam box, yellow raised foam, a blue railing and a white railing.

3. The multi-brightness visual navigation test field according to claim 2, characterized in that: The yellow raised foam, the blue railings and the white railings are arranged on the preset walking route for the tester to cross.

4. The multi-brightness visual navigation test field according to claim 2, characterized in that: The blue trash can, the orange three-layer foam box, the red three-layer foam box, the orange one-layer foam box, and the yellow triangular foam box are arranged on one side of the preset walking route.

5. The multi-luminance visual navigation test field according to claim 1, characterized in that: The multi-brightness visual navigation test field is a closed room; The light source assembly includes a plurality of ceiling light strips and a plurality of side light strips. The plurality of ceiling light strips are arranged on the top wall of the room, and the plurality of side light strips are arranged on the side walls of the room.

6. The multi-luminance visual navigation test field according to claim 1, characterized in that: The multi-brightness visual navigation test field further includes at least two camera devices, which are used to record audio and video of the test process.

Images