Visual function detection method

Abstract

The invention belongs to the technical field of visual detection, and particularly relates to a visual function detection method, which comprises a visual detection device and a display screen, and a plurality of polarization detection icons and non-polarization detection icons are stored in the visual detection device; the left eye and the right eye of a human body can obtain two patterns by observing the polarization detection icons through the polarized lenses respectively. The detection method sequentially comprises the following steps of: A, starting the display screen and the visual detection device; step B, determining a detection item required to be detected by a patient; c, the completion condition of the detection items in the item list is judged; step D, judging the type of the execution item; e, calling a polarization detection icon for detection; and step F, calling the non-polarization detection icon for detection. According to the invention, a plurality of human binocular vision function inspection items can be performed in one device, and the polarization detection icons and the non-polarization detection icons are displayed by means of the display screen, so that the vision function and the binocular vision function are respectively detected.

Description

Technical field:

[0001] The invention belongs to the technical field of visual detection, and in particular relates to a visual function detection method. Background technology:

[0002] At present, there are many examination items in the human binocular vision function test, such as vision test, astigmatism test, stereoscopic vision test, horizontal strabismus test, fixation difference test, fusion and inhibition test, etc., and these examination items can now be completed with the help of various special visual function examination devices. Although it is much more convenient to use and operate than the traditional inspection with paper sight marks, correspondingly, due to the large number of devices, the equipment cost is expensive and needs to occupy a large space for use. Summary of the invention:

[0003] The purpose of the present invention is to provide a visual function detection method, which can perform multiple human binocular vision function test items in one device, display polarization detection icons and non-polarization detection icons on a display screen to detect vision function and binocular vision function respectively. It has many functions, is easy to use and has low cost.

[0004] The present invention is achieved in that:

[0005] A visual function detection method includes a visual detection device and a display screen electrically connected to the visual detection device, wherein the present invention reasonably summarizes the types of visual marks used for vision detection items and visual marks used for binocular function detection items to form polarization detection icons and non-polarization detection icons, so the visual detection device stores a plurality of polarization detection icons for polarization items and non-polarization detection icons for non-polarization items; the left eye and the right eye of the human body can respectively observe the polarization detection icons through polarization lenses to obtain two patterns, the visual detection device is connected to a control unit for communication, and the visual detection device controls the display screen to display the corresponding detection icon according to the command signal of the control unit,

[0006] The detection method comprises in sequence:

[0007] Step A: Turn on the display screen and visual inspection device and proceed to the next step;

[0008] Step B: Determine the test items that the patient needs to test, form a list of items, and proceed to the next step;

[0009] Step C: Determine the completion status of the inspection items in the project list:

[0010] If all the test items in the project list have been completed, the test is terminated;

[0011] If there are unfinished inspection items in the item list, one of the unfinished inspection items is determined as an execution item, and the next step is entered;

[0012] Step D: Determine the type of execution project:

[0013] If the execution project is a polarization project, proceed to step E;

[0014] If the execution project is a non-polarization project, proceed to step F;

[0015] Step E: The control element retrieves a polarization detection icon for detecting the execution item in the visual detection device and displays it on the display screen, and adjusts the size of the polarization detection icon displayed on the display screen according to a certain conversion ratio based on the distance between the patient and the display screen, and then proceeds to step e1;

[0016] Step e1: The patient looks straight through both eyes, and the left eye and the right eye observe the polarization detection icon in step E through polarized lenses respectively. The patient's visual condition is recorded according to the recognition feedback of the two patterns obtained by the patient's two eyes and the left eye and the right eye, and then the next step is entered;

[0017] Step e2: The execution of the project is completed, return to step C;

[0018] Step F: The non-polarization detection icon for detecting the execution item is retrieved in the visual detection device through the control element and displayed on the display screen, and the size of the non-polarization detection icon displayed on the display screen is adjusted according to a certain conversion ratio based on the distance between the patient and the display screen, and the process proceeds to step f1;

[0019] Step f1: The patient observes the non-polarized detection icon in step F with both eyes, and the patient's vision is recorded according to the patient's recognition feedback, and then proceeds to the next step;

[0020] Step f2: The execution of the project has been completed, return to step C.

[0021] In the above-mentioned visual function detection method, the polarization detection icon is a compensation sight mark for detecting visual motion performance compensation items; or a fixation sight mark for detecting visual fixation difference items; or a stereo sight mark for detecting visual stereoscopic items; or a balance sight mark for detecting visual correction balance items; or a strabismus sight mark for detecting visual strabismus items; or a complementary sight mark for detecting visual fusion and inhibition items.

[0022] In the above-mentioned visual function detection method, the non-polarized detection icon is an astigmatism sight mark for detecting astigmatism items; or a vision sight mark for detecting vision items; or a scene sight mark for simulating vision items in specific scenes.

[0023] In the above-mentioned visual function detection method, the polarization detection icon is composed of two overlapping patterns with different polarization lights, and at least one pattern in some polarization detection icons can be controlled by the visual detection device to perform relative translation or rotation.

[0024] In the above-mentioned visual function detection method, a step e3 is further included between the step e1 and the step e2.

[0025] Step e3: If the polarization detection icon in step E has no pattern for relative translation or rotation, directly proceed to the next step;

[0026] If at least one pattern of the polarization detection icon in step E can be relatively translated or rotated, then the control component controls at least one pattern of the corresponding polarization detection icon to be translated or rotated through the visual detection device, and the patient again observes the changed polarization detection icon through binocular gaze and left and right eyes through polarized lenses respectively. The patient's visual condition is recorded again based on the recognition feedback of the two patterns obtained by the patient's binocular gaze and left and right eyes, and then proceeds to the next step.

[0027] In the above-mentioned visual function detection method, the non-polarized detection icon is composed of a background pattern and a sight mark pattern placed in front of the background pattern. The background pattern and the sight mark pattern in some non-polarized detection icons can be controlled by a visual detection device for scaling adjustment, and the sight mark pattern in some non-polarized detection icons can be controlled by a visual detection device for orientation adjustment relative to the background pattern.

[0028] In the above-mentioned visual function detection method, a step f3 is further included between the step f1 and the step f2.

[0029] Step f3: With the help of a control component, the background pattern and the sight mark pattern corresponding to the non-polarized detection icon are controlled to be scaled and adjusted through the visual detection device, or with the help of a control component, the sight mark pattern corresponding to the non-polarized detection icon is controlled to be scaled or adjusted in orientation through the visual detection device. The patient's eyes observe the changed non-polarized detection icon, and the patient's vision is recorded again based on the patient's recognition feedback, and then the next step is entered.

[0030] In the above-mentioned visual function detection method, the visual detection device is a data main control board mounted on a display screen, the control component is a remote control or a mobile tablet connected to the visual detection device through wireless communication, or the control component is a computer host connected to the visual detection device through wired communication or a control button fixed on the display screen.

[0031] The outstanding advantages of the present invention compared with the prior art are:

[0032] The present invention can perform multiple human binocular vision function test items in one device, and use a display screen to display polarization detection icons and non-polarization detection icons to respectively detect vision function and binocular vision function. It has many functions, is easy to use and has low cost. Description of the drawings:

[0033] Figure 1 It is a detection flow chart of the detection method of the present invention;

[0034] Figure 2 It is a schematic diagram of a display screen displaying a compensation sight mark of the present invention;

[0035] Figure 3 It is a schematic diagram of a display screen of the present invention displaying a vertical anisotropic sight mark;

[0036] Figure 4 It is a schematic diagram of a display screen of the present invention displaying a horizontal anisotropic sight mark;

[0037] Figure 5 It is a schematic diagram of a display screen of the present invention displaying a four-pointer disk visual mark;

[0038] Figure 6 It is a schematic diagram of a display screen of the present invention displaying a stereoscopic balance sight mark;

[0039] Figure 7 It is a schematic diagram of a display screen of the present invention displaying a dominant eye test sight mark;

[0040] Figure 8 It is a schematic diagram of a display screen of the present invention displaying a three-dimensional balloon sight mark;

[0041] Fig. 9 It is a schematic diagram of a display screen of the present invention displaying a balance sight mark;

[0042] Fig.10 It is a schematic diagram of a display screen of the present invention displaying complementary sight marks;

[0043] Fig.11 It is a schematic diagram of a display screen of the present invention displaying a strabismus sight mark;

[0044] Fig.12 It is a schematic diagram of a display screen of the present invention displaying an astigmatism sight mark;

[0045] Fig.13 It is a schematic diagram of a display screen of the present invention displaying a campus classroom scene visual icon;

[0046] Fig.14 It is a schematic diagram of a display screen of the present invention displaying a vehicle driving scene visual mark. Specific implementation method:

[0048] The present invention is further described below with reference to specific embodiments. Figure 1 —14:

[0049] A visual function detection method includes a visual detection device and a display screen electrically connected to the visual detection device, wherein the present invention reasonably summarizes the types of visual marks used for vision detection items and visual marks used for binocular function detection items to form polarized detection icons and non-polarized detection icons, so that the visual detection device stores a plurality of polarized detection icons for polarized items and non-polarized detection icons for non-polarized items, and the left eye and the right eye of the human body can respectively observe the polarized detection icons through polarized lenses to obtain two patterns, the visual detection device is connected to a control component for communication, and the visual detection device controls the display screen to display the corresponding detection icon according to the command signal of the control component,

[0050] Furthermore, since the left eye and the right eye of the human body can see two patterns by observing the polarization detection icon through polarized lenses, the polarization detection icon is composed of two overlapping patterns with different polarizations. In addition, in order to enable the patient to accurately, clearly and clearly identify the two patterns that can be seen by each polarization detection icon, at least one pattern in some polarization detection icons can be controlled by the visual detection device to perform relative translation or rotation. That is, the relative movement or rotation of the pattern can be directly performed during the detection process to ensure that the patient can effectively identify it and avoid errors in the conclusion of the visual function test due to errors in the patient's identification feedback.

[0051] At the same time, considering that the current eye charts used to detect vision function are densely distributed with M characters, which can easily interfere with the patient's vision recognition, in order to accurately detect the patient's vision and astigmatism, the non-polarized detection icon is composed of a background pattern, and a sight mark pattern pre-placed on the background pattern; the background pattern and the sight mark pattern in some non-polarized detection icons can be controlled by a visual detection device for scaling adjustment; and the sight mark pattern in some non-polarized detection icons can be controlled by a visual detection device for orientation adjustment relative to the background pattern.

[0052] In this embodiment, the detection method includes the following steps:

[0053] Step A: Turn on the display screen and visual inspection device and proceed to the next step;

[0054] Step B: Determine the test items that the patient needs to test, form a list of items, and proceed to the next step;

[0055] Step C: Determine the completion status of the inspection items in the project list:

[0056] If all the test items in the project list have been completed, the test is terminated;

[0057] If there are unfinished inspection items in the item list, one of the unfinished inspection items is determined as an execution item, and the next step is entered;

[0058] Step D: Determine the type of execution project:

[0059] If the execution project is a polarization project, proceed to step E;

[0060] If the execution project is a non-polarization project, proceed to step F;

[0061] Step E: The control element retrieves a polarization detection icon for detecting the execution item in the visual detection device and displays it on the display screen, and adjusts the size of the polarization detection icon displayed on the display screen according to a certain conversion ratio based on the distance between the patient and the display screen, and then proceeds to step e1;

[0062] Step e1: The patient looks straight through both eyes, and the left eye and the right eye observe the polarization detection icon in step E through polarized lenses respectively. The patient's visual condition is recorded according to the recognition feedback of the two patterns obtained by the patient's two eyes and the left eye and the right eye, and then the next step is entered;

[0063] Step e3: If the polarization detection icon in step E has no pattern for relative translation or rotation, directly proceed to the next step;

[0064] If at least one pattern of the polarization detection icon in step E can be relatively translated or rotated, the control component controls at least one pattern of the corresponding polarization detection icon to be translated or rotated through the visual detection device, and the patient again observes the changed polarization detection icon through binocular normal vision and the left eye and right eye through polarized lenses respectively, and the patient's visual condition is recorded again based on the recognition feedback of the two patterns obtained by the patient's binocular normal vision and the left eye and right eye, and then proceeds to the next step;

[0065] Step e2: The execution of the project is completed, return to step C;

[0066] Step F: The non-polarization detection icon for detecting the execution item is retrieved in the visual detection device through the control element and displayed on the display screen, and the size of the non-polarization detection icon displayed on the display screen is adjusted according to a certain conversion ratio based on the distance between the patient and the display screen, and the process proceeds to step f1;

[0067] Step f1: The patient observes the non-polarized detection icon in step F with both eyes, and the patient's vision is recorded according to the patient's recognition feedback, and then proceeds to the next step;

[0068] Step f3: the background pattern and the sight mark pattern corresponding to the non-polarization detection icon are controlled to be scaled and adjusted by the visual detection device with the help of the control component, or the sight mark pattern corresponding to the non-polarization detection icon is controlled to be scaled or adjusted in orientation by the visual detection device with the help of the control component, the patient's eyes observe the changed non-polarization detection icon, and the patient's vision is recorded again according to the patient's recognition feedback, and then the next step is entered;

[0069] Step f2: The execution of the project has been completed, return to step C.

[0070] Furthermore, the polarization detection icon is a compensation sight mark for detecting visual motion performance compensation items; or a fixation sight mark for detecting visual fixation difference items; or a stereo sight mark for detecting visual stereoscopic items; or a balance sight mark for detecting visual correction balance items; or a strabismus sight mark for detecting visual strabismus items; or a complementary sight mark for detecting visual fusion and inhibition items.

[0071] In this embodiment, the specific structures used by the compensation sight mark, the fixation sight mark, the stereoscopic sight mark, the balance sight mark, the strabismus sight mark and the complementary sight mark are:

[0072] Compensation sight mark (see the attached figure of the instruction manual) Figure 2 ): It consists of two horizontal bars spaced apart in the horizontal direction and two vertical bars spaced apart in the vertical direction. The patient's left eye can see the two horizontal bars through the polarized lens, and the patient's right eye can see the two vertical bars through the polarized lens. In addition, the two horizontal bars and the two vertical bars can be relatively displaced. This compensation sight mark is used to detect binocular visual motion performance compensation.

[0073] The fixation sight mark includes a vertical anisotropic sight mark (see the attached figure of the specification Figure 3 ), horizontal anisotropy sight mark (see the attached figure of the instruction manual Figure 4 ), four pointer dial sight mark (see the manual attachment Figure 5): The vertical anisopic sight mark is composed of a left half-frame icon and a right half-frame icon that are symmetrically distributed on the left and right sides. The centers of the left half-frame icon and the right half-frame icon are both provided with dots that can overlap. The patient's left eye can see the left half-frame icon through a polarized lens, and the patient's right eye can see the right half-frame icon through a polarized lens. In addition, the left half-frame icon and the right half-frame icon can be relatively displaced up and down. The horizontal anisopic sight mark is composed of an upper half-frame icon and a lower half-frame icon that are symmetrically distributed on the upper and lower sides. The centers of the upper half-frame icon and the lower half-frame icon are both provided with dots that can overlap. The patient's left eye can see the lower half-frame icon through a polarized lens, and the patient's right eye can see the upper half-frame icon through a polarized lens. In addition, the upper half-frame icon and the lower half-frame icon can be relatively displaced left and right. The four-pointer disk sight mark is composed of four pointer icons and a needle disk icon overlapping. The patient's left eye can see the four pointer icons through a polarized lens, and the patient's right eye can see the needle disk icon through a polarized lens. In addition, the four pointer icons can rotate relative to the needle disk icon, and the four pointer icons and the needle disk icon can be relatively displaced.

[0074] The vertical anisotropia sight chart is used to check the patient's binocular fixation difference, correct the initial fixation difference and the vertical component of the old fixation difference, and identify the vertical binocular image difference. The horizontal anisotropia sight chart is used to check the horizontal component of the patient's fixation difference and identify the horizontal binocular image difference; the four-pointer disk sight chart is used to check the fixation difference, motor fusion compensation (horizontal and vertical directions), check rotational heterophoria, and distinguish whether it is true rotational heterophoria or visual distortion.

[0075] Stereoscopic sight marks include stereoscopic balance sight marks (see the attached drawings of the specification) Figure 6 ), dominant eye test sight mark (see the attached figure of the instruction manual Figure 7 ), three-dimensional balloon sight mark (see the attached figure of the instruction manual Figure 8 ): The stereoscopic balance sight mark consists of a middle dot with a vertical line icon and two overlapping triangle icons symmetrically distributed up and down. The patient's left eye can see the middle dot with a vertical line icon offset to the left relative to the two overlapping triangle icons through a polarized lens, and the patient's right eye can see the middle dot with a vertical line icon offset to the right relative to the two overlapping triangle icons through a polarized lens. The dominant eye test sight mark consists of a tiger photo and a lion photo overlapping. The patient's left eye can see a lion photo through a polarized lens, and the patient's right eye can see a tiger photo through a polarized lens. The stereoscopic balloon sight mark consists of two overlapping hot air balloon group icons, each of which includes four hot air balloons of different sizes and colors. The patient's left eye and right eye can see one of the hot air balloon group icons through a polarized lens, and the two hot air balloon group icons can be relatively displaced horizontally.

[0076] The stereoscopic balance sight chart is used to test the stereoscopic vision of the patient's eyes after the correction is completed during the fixation difference test, and to determine whether the patient's eyes still need to complete residual correction in the binocular stereoscopic balance test. The dominant eye test sight chart is used to determine which eye of the patient is dominant in the binocular coordination.

[0077] Balance sight mark (see the attached figure of the instruction manual) Fig. 9 ): It consists of a horizontal double diamond icon, one red and one green, distributed horizontally, and a vertical double diamond icon, one red and one green, distributed vertically, and each diamond has a different number. The patient's left eye can see the horizontal double diamond icon through a polarized lens, and the patient's right eye can see the vertical double diamond icon through a polarized lens.

[0078] Balance sight charts are used to test the patient's vision in both eyes.

[0079] Complementary sight signs (see the attached figure of the instruction manual Fig.10 ): It is composed of a green icon with two plus signs distributed in a triangle and a dot in the middle, and a red icon with a diamond and a dot. The middle dot of the green icon overlaps with the dot of the red icon to form a white dot. The patient's left eye can see the green icon through a polarized lens, and the patient's right eye can see the red icon through a polarized lens.

[0080] Complementary sight signs are used to detect whether the patient has monocular suppression, diplopia and other problems, and to evaluate the patient's binocular single vision function and fusion ability.

[0081] Strabismus sight mark (see the attached figure of the instruction manual Fig.11 ): It consists of a bar scale icon and triangular icons distributed on the upper and lower sides of the bar scale icon and set relatively to each other. The patient's left eye can see the bar scale icon through a polarized lens, and the patient's right eye can see the triangular icon through a polarized lens. In addition, the triangular icon can be translated relative to the length direction of the bar scale icon. At the same time, the bar scale icon and the triangular icon can rotate together.

[0082] The strabismus chart is used to measure the amount of strabismus in the patient's eyes.

[0083] At the same time, the non-polarized detection icon is an astigmatism sight mark for detecting astigmatism items; or a vision sight mark for detecting vision items; or a scene sight mark for simulating vision items in specific scenes.

[0084] Among them, the visual acuity sight mark is a common detection icon, so it will not be described in detail again in this embodiment;

[0085] Astigmatism sight mark (see the attached figure in the instruction manual Fig.12): It is composed of an arc-shaped scale icon and an indicator icon arranged in the inner ring of the arc-shaped scale icon, wherein the indicator icon includes two or more inverted triangles stacked and pointing to the arc-shaped scale icon, two or more column lines arranged side by side, and two or more row lines arranged side by side, wherein the indicator icon can rotate circumferentially relative to the arc-shaped scale icon.

[0086] The scene sight mark can simulate the environment of driving on the road, taking classes in the classroom, playing basketball or skiing in order to perform vision testing. In this embodiment, the scene sight mark includes a campus classroom scene sight mark (see the attached figure of the specification). Fig.13 ) and the vehicle driving scene visual mark (see the attached figure of the manual Fig.14 ): The campus classroom scene sight mark is composed of the classroom background pattern and the sight mark pattern placed on the classroom blackboard. The sight mark pattern can be scaled and the shape of the pattern can be changed. The vehicle driving scene sight mark is composed of the road background pattern and the vehicle pattern placed on the lane. The license plate letters of the vehicle pattern are used to detect the patient's vision recognition, and the vehicle pattern as a whole can be scaled.

[0087] In addition, the visual detection device is a data main control board mounted on a display screen, the control component is a remote control or a mobile tablet connected to the visual detection device via wireless communication, or the control component is a computer host connected to the visual detection device via wired communication or a control button fixed on the display screen.

[0088] The above embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made based on the shape, structure, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for detecting visual function, characterized in that: The invention comprises a visual detection device and a display screen electrically connected to the visual detection device. The visual detection device stores a plurality of polarization detection icons for polarized items and non-polarization detection icons for non-polarized items. The left eye and the right eye of a human body can respectively observe the polarization detection icons through polarized lenses to obtain two patterns. The visual detection device is connected to a control unit for communication. The visual detection device controls the display screen to display corresponding detection icons according to a command signal of the control unit. The detection method comprises in sequence: Step A: Turn on the display screen and visual inspection device and proceed to the next step; Step B: Determine the test items that the patient needs to test, form a list of items, and proceed to the next step; Step C: Determine the completion status of the inspection items in the project list: If all the test items in the project list have been completed, the test is terminated; If there are unfinished inspection items in the item list, one of the unfinished inspection items is determined as an execution item, and the next step is entered; Step D: Determine the type of execution project: If the execution project is a polarization project, proceed to step E; If the execution project is a non-polarization project, proceed to step F; Step E: The control element retrieves a polarization detection icon for detecting the execution item in the visual detection device and displays it on the display screen, and adjusts the size of the polarization detection icon displayed on the display screen according to a certain conversion ratio based on the distance between the patient and the display screen, and then proceeds to step e1; Step e1: The patient looks straight through both eyes, and the left eye and the right eye observe the polarization detection icon in step E through polarized lenses respectively. The patient's visual condition is recorded according to the recognition feedback of the two patterns obtained by the patient's two eyes and the left eye and the right eye, and then the next step is entered; Step e2: The execution of the project is completed, return to step C; Step F: The non-polarization detection icon for detecting the execution item is retrieved in the visual detection device through the control element and displayed on the display screen, and the size of the non-polarization detection icon displayed on the display screen is adjusted according to a certain conversion ratio based on the distance between the patient and the display screen, and the process proceeds to step f1; Step f1: The patient observes the non-polarized detection icon in step F with both eyes, and the patient's vision is recorded according to the patient's recognition feedback, and then proceeds to the next step; Step f2: The execution of the project has been completed, return to step C.

2. A visual function detection method according to claim 1, characterized in that: The polarization detection icon is a compensation sight mark for detecting visual motion performance compensation items; or a fixation sight mark for detecting visual fixation difference items; or a stereo sight mark for detecting visual stereoscopic items; or a balance sight mark for detecting visual correction balance items; or a strabismus sight mark for detecting visual strabismus items; or a complementary sight mark for detecting visual fusion and inhibition items.

3. A visual function detection method according to claim 1, characterized in that: The non-polarized detection icon is an astigmatism sight mark for detecting an astigmatism item; or a vision sight mark for detecting a vision item; or a scene sight mark for simulating a vision item in a specific scene.

4. A method for detecting visual function according to claim 1 or 2, characterized in that: The polarization detection icon is composed of two overlapping patterns with different polarizations, and at least one pattern in some polarization detection icons can be controlled by a visual detection device to perform relative translation or rotation.

5. A method for detecting visual function according to claim 4, characterized in that: A step e3 is included between step e1 and step e2. Step e3: If the polarization detection icon in step E has no pattern for relative translation or rotation, directly proceed to the next step; If at least one pattern of the polarization detection icon in step E can be relatively translated or rotated, then the control component controls at least one pattern of the corresponding polarization detection icon to be translated or rotated through the visual detection device, and the patient again observes the changed polarization detection icon through binocular gaze and left and right eyes through polarized lenses respectively. The patient's visual condition is recorded again based on the recognition feedback of the two patterns obtained by the patient's binocular gaze and left and right eyes, and then proceeds to the next step.

6. A method for detecting visual function according to claim 1 or 3, characterized in that: The non-polarization detection icon is composed of a background pattern and a sight mark pattern placed in front of the background pattern. The background pattern and the sight mark pattern in some non-polarization detection icons can be controlled by a visual detection device for scaling adjustment, and the sight mark pattern in some non-polarization detection icons can be controlled by a visual detection device for orientation adjustment relative to the background pattern.

7. A method for detecting visual function according to claim 6, characterized in that: A step f3 is included between step f1 and step f2. Step f3: With the help of a control component, the background pattern and the sight mark pattern corresponding to the non-polarized detection icon are controlled to be scaled and adjusted through the visual detection device, or with the help of a control component, the sight mark pattern corresponding to the non-polarized detection icon is controlled to be scaled or adjusted in orientation through the visual detection device. The patient's eyes observe the changed non-polarized detection icon, and the patient's vision is recorded again based on the patient's recognition feedback, and then the next step is entered.

8. A method for detecting visual function according to claim 1, 5 or 7, characterized in that: The visual inspection device is a data main control board mounted on a display screen, the control component is a remote control or a mobile tablet connected to the visual inspection device via wireless communication, or the control component is a computer host connected to the visual inspection device via wired communication or a control button fixed on the display screen.

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