CN115998241B

CN115998241B - Visual detection method, visual detection device, electronic equipment and visual detection system

Info

Publication number: CN115998241B
Application number: CN202310321014.2A
Authority: CN
Inventors: 邱启仓
Original assignee: Zhejiang Lab
Current assignee: Zhejiang Lab
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-06-27
Anticipated expiration: 2043-03-29
Also published as: CN115998241A

Abstract

The application provides a visual detection method, a visual detection device, electronic equipment and a visual detection system. The visual detection method comprises the steps that electronic equipment is arranged in a mounting bracket of an observer for visual detection to obtain the pupil distance of a tested person, so that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person; under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, displaying a visual target positioned in the detection frame in a touch display screen of the electronic equipment, wherein the visual target is opposite to the test window and the observation channel; based on the visual optotype, the visual function of the subject is detected. Therefore, the testee can operate by himself, visual function inspection is carried out, and the testee is convenient to use.

Description

Visual detection method, visual detection device, electronic equipment and visual detection system

Technical Field

The present invention relates to the field of vision technologies, and in particular, to a vision detection method, device, electronic apparatus, and system.

Background

The visual inspection methods in the related art are mainly divided into two methods, one is a visual inspection meter and the other is to use an electronic visual inspection instrument.

In the two visual detection methods, another auxiliary person is needed to be used as a pointing icon of the tested person to make a judgment to observe the visual detection table or the visual detection instrument, so that inconvenience is caused to the tested person.

Disclosure of Invention

The application provides a visual detection method, a visual detection device, electronic equipment and a visual detection system, wherein a detected person can operate by himself, visual inspection is performed, and the detected person is convenient to use.

The application provides a visual inspection method which is applied to electronic equipment, wherein the electronic equipment is arranged in a mounting bracket of a viewer for visual inspection, the observer comprises an observation window for the observation of a testee, a test window which is opposite to the observation window and is arranged at intervals, and an observation channel which is formed between the observation window and the test window, and, the installing support is close to the test window setting, the visual inspection method includes:

obtaining the pupil distance of a tested person so that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person;

displaying a visual target positioned in a detection frame in a touch display screen of the electronic equipment under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, wherein the visual target is opposite to the test window and the observation channel;

And detecting the visual function of the tested person based on the visual optotype.

Further, the displaying, in the touch display screen of the electronic device, the visual optotype located in the detection frame includes:

displaying a visual contrast sensitivity visual target positioned in a detection frame in a touch control display screen of the electronic equipment, wherein the visual contrast sensitivity visual target is opposite to the test window and the observation channel;

the detecting, based on the visual optotype, the visual function of the subject includes:

and detecting the visual contrast sensitivity of the tested person based on the visual contrast sensitivity sighting target.

Further, the displaying, in the touch display screen of the electronic device, the visual contrast sensitivity optotype located in the detection frame includes:

acquiring screen resolution of the touch display screen of the electronic equipment;

determining the number of pixel points required by the visual contrast sensitivity visual target according to the size of a single screen pixel point of the screen resolution;

and obtaining the visual contrast sensitivity visual target according to the number of the pixel points, and displaying the visual contrast sensitivity visual target in the detection frame.

Further, the determining the number of pixels required by the visual contrast sensitivity visual target according to the size of the single screen pixel of the screen resolution includes:

and taking the integer of the ratio of the size of the visual contrast sensitivity visual target to the size of the single screen pixel point according to the size of the visual contrast sensitivity visual target, and obtaining the number of the pixel points required by the visual contrast sensitivity visual target.

obtaining an actual observation distance of an observer;

converting the actual observation distance of the observer into fixed simulated observation parameters;

and adjusting the size of the visual contrast sensitivity visual target according to the simulated observation parameters, and displaying the visual contrast sensitivity visual target in the detection frame as the size of the visual contrast sensitivity visual target.

and randomly displaying the visual contrast sensitivity visual target in a touch display screen of the electronic equipment according to the contrast change of the visual contrast sensitivity.

Further, the observation channel of the observer comprises a left eye observation channel and a right eye observation channel, the visual contrast sensitivity visual target comprises a left eye visual target and a right eye visual target, the detection frame comprises a left detection frame with the left eye visual target and a right detection frame with the right eye visual target, the left eye observation channel is opposite to the left detection frame, and the right eye observation channel is opposite to the right detection frame;

the method for detecting the visual contrast sensitivity of the testee by displaying the visual contrast sensitivity sighting target in the detection frame in the touch display screen of the electronic equipment comprises the following steps:

displaying a left eye visual target positioned in the left detection frame on the electronic equipment, and detecting the left eye visual contrast sensitivity of the tested person;

displaying a right eye visual target positioned in the right detection frame on the electronic equipment, and detecting the right eye visual contrast sensitivity of the tested person;

and displaying a left eye visual target positioned in the left detection frame and a right eye visual target positioned in the right detection frame on the electronic equipment, and detecting the binocular vision contrast sensitivity of the tested person.

Further, the touch display screen comprises the detection frame and an operable area for judging the direction of the visual contrast sensitivity visual target by the testee, wherein the operable area is positioned around the visual contrast sensitivity visual target, and an operation space exists between the operable area and the test window;

The detecting the visual contrast sensitivity of the tested person based on the visual contrast sensitivity sighting target comprises the following steps:

acquiring an operation direction of user touch operation of the visual contrast sensitivity visual target based on the visual contrast sensitivity visual target;

comparing whether the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target;

under the condition that the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the visual contrast sensitivity visual target by the tested person is correct;

and under the condition that the operation direction is inconsistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the tested person on the visual contrast sensitivity visual target is incorrect.

Further, the detection frame and the operable area are located in a visible area of the viewer, the detection frame is white, the visual contrast sensitivity optotype in the detection frame is black, and the operable area is white.

Displaying a vision target positioned in a detection frame in a touch display screen of the electronic equipment, wherein the vision target is opposite to the test window and the observation channel;

and performing vision testing of the tested person based on the vision optotype.

Further, the displaying, in the touch display screen of the electronic device, the vision optotype located in the detection frame includes:

determining the number of pixels required by the vision optotype according to the size of a single screen pixel with the screen resolution;

and obtaining the vision optotype according to the number of the pixel points, and displaying the vision optotype in the detection frame.

Further, the determining the number of pixels required by the vision optotype according to the size of the single screen pixel of the screen resolution includes:

and taking the integer ratio of the size of the vision target to the size of the single screen pixel point according to the size of the vision target, and obtaining the number of the pixel points required by the vision target.

obtaining an actual observation distance of an observer;

and adjusting the size of the vision target according to the simulated observation parameters, and displaying the vision target in the detection frame as the size of the vision target.

and randomly displaying the vision optotype in different sizes in a touch display screen of the electronic equipment.

Further, the observation channel of the observer comprises a left eye observation channel and a right eye observation channel, the vision target comprises a left eye target and a right eye target, the detection frame comprises a left detection frame with the left eye target and a right detection frame with the right eye target, the left eye observation channel is opposite to the left detection frame, and the right eye observation channel is opposite to the right detection frame;

and displaying a vision optotype positioned in a detection frame in a touch control display screen of the electronic equipment, and performing vision test of the tested person, wherein the vision test comprises the following steps:

Displaying a left eye visual target positioned in the left detection frame on the electronic equipment, and detecting the left eye vision of the tested person;

and displaying a right eye optotype positioned in the right detection frame on the electronic equipment, and detecting the right eye vision of the tested person.

Further, the touch display screen comprises the detection frame and an operable area for the testee to judge the direction of the vision target, wherein the operable area is positioned around the vision target, and an operation space exists between the operable area and the test window;

the vision test of the tested person is performed based on the vision optotype, which comprises the following steps:

acquiring an operation direction of user touch operation on the vision optotype based on the vision optotype;

comparing whether the operating direction is consistent with the opening direction of the vision optotype;

determining that the determination of the vision target by the tested person is correct under the condition that the operation direction is consistent with the opening direction of the vision target;

in the case where the operation direction is not consistent with the opening direction of the visual target, it is determined that the determination of the visual target by the subject is incorrect.

Further, the detection frame and the operable area are located in a visible area of the viewer, the detection frame is white, the visual target in the detection frame is black, and the operable area is white.

The embodiment of the application provides a visual inspection device which is applied to electronic equipment, wherein the electronic equipment is arranged in a mounting bracket of an observer for visual inspection, the observer comprises an observation window for the observation of a testee, a test window which is opposite to the observation window and is arranged at intervals, and an observation channel which is formed between the observation window and the test window, and, the installing support is close to the test window setting, the visual inspection method includes:

the processor is used for acquiring the pupil distance of the tested person;

the touch control display screen is used for displaying a visual target positioned in the detection frame under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, and the visual target is opposite to the test window and the observation channel;

the processor is also used for detecting the visual function of the tested person based on the visual optotype.

Further, the touch display screen is specifically configured to display a visual contrast sensitivity visual target located in the detection frame when the pupil distance adjusted by the observer is consistent with the pupil distance of the tested person, where the visual contrast sensitivity visual target is opposite to the test window and the observation channel;

the processor is further specifically configured to detect the visual contrast sensitivity of the tested person based on the visual contrast sensitivity optotype.

Further, the processor comprises a reading system data sub-module for acquiring screen resolution of the touch display screen of the electronic device;

the optotype determining module is used for determining the number of the pixels required by the visual contrast sensitivity optotype according to the size of the single screen pixel of the screen resolution;

the processing sub-module is used for obtaining the visual contrast sensitivity visual target according to the number of the pixel points and outputting the visual contrast sensitivity visual target to the touch display screen;

the touch control display screen is specifically used for displaying the visual contrast sensitivity optotype in the detection frame.

Further, the optotype determining module is specifically configured to take an integer from a ratio of the size of the visual contrast sensitivity optotype to the size of the single screen pixel according to the size of the visual contrast sensitivity optotype, so as to obtain the number of pixels required by the visual contrast sensitivity optotype.

Further, the processor comprises a data reading sub-module of the observer, which is used for obtaining the actual observation distance of the observer;

the observation distance conversion sub-module is used for converting the actual observation distance of the observer into fixed simulation observation parameters;

the visual contrast sensitivity visual target adjusting sub-module is used for adjusting the size of the visual contrast sensitivity visual target according to the simulated observation parameters;

the processing sub-module is used for obtaining the visual contrast sensitivity visual target according to the size of the visual contrast sensitivity visual target after adjustment and outputting the visual contrast sensitivity visual target to the touch display screen;

Further, the processor is specifically configured to randomly display the visual contrast sensitivity optotype in the touch display screen of the electronic device according to the contrast change of the visual contrast sensitivity.

The processor is specifically further configured to:

Further, the detection frame comprises an operable area for the testee to judge the direction of the visual contrast sensitivity visual target, the operable area is positioned around the visual contrast sensitivity visual target, and an operation space exists between the operable area and the test window;

the processor comprises a judging submodule, and is specifically used for acquiring an operation direction of user touch operation on the visual contrast sensitivity visual target based on the visual contrast sensitivity visual target; the judging submodule is used for comparing whether the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target or not; under the condition that the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the visual contrast sensitivity visual target by the tested person is correct; and under the condition that the operation direction is inconsistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the tested person on the visual contrast sensitivity visual target is incorrect.

Further, the touch display screen is specifically configured to display an optotype located in the detection frame when the pupil distance of the observer is consistent with the pupil distance of the tested person, where the optotype is opposite to the test window and the observation channel;

the processor is also specifically configured to perform a vision test of the subject based on the vision optotype.

the optotype determining module is used for determining the number of the pixels required by the vision optotype according to the size of the single screen pixel of the screen resolution;

the processing sub-module is used for obtaining the vision optotype according to the number of the pixel points and outputting the vision optotype to the touch display screen;

the touch control display screen is specifically used for displaying the vision optotype in the detection frame.

Further, the optotype determining module is specifically configured to, according to the size of the optotype, take an integer from a ratio of the size of the optotype to the size of the pixel point of the single screen, and obtain the number of the pixel points required by the optotype.

the vision optotype adjusting submodule is used for adjusting the size of the vision optotype according to the simulated observation parameters;

the processing sub-module is used for obtaining the vision optotype according to the adjusted size of the vision optotype and outputting the vision optotype to the touch display screen;

Further, the processor is specifically configured to randomly display the vision optotype in the touch-controllable display screen of the electronic device according to different sizes of the vision optotype.

The processor is specifically further configured to:

Further, the detection frame comprises an operable area for the testee to judge the direction of the vision target, the operable area is positioned around the vision target, and an operation space exists between the operable area and the test window;

the processor comprises a judging submodule, and is particularly used for acquiring the operation direction of the touch operation of the user of the vision optotype based on the vision optotype; the judging submodule is used for comparing whether the operation direction is consistent with the opening direction of the vision optotype or not; determining that the determination of the vision target by the tested person is correct under the condition that the operation direction is consistent with the opening direction of the vision target; in the case where the operation direction is not consistent with the opening direction of the visual target, it is determined that the determination of the visual target by the subject is incorrect.

The application provides an electronic device comprising a visual inspection apparatus as claimed in any one of the preceding claims.

The application provides a visual inspection system, which comprises an observer used for visual inspection and the electronic equipment, wherein the electronic equipment is arranged in a mounting bracket of the observer;

the observer is configured to adjust, when the processor of the electronic device obtains the pupillary distance of the person under test, according to the pupillary distance, the pupillary distance adjusted by the observer to be consistent with the pupillary distance of the person under test, so that the touch display screen displays a visual target located in the detection frame when the pupillary distance adjusted by the observer is consistent with the pupillary distance of the person under test, and the processor is further configured to detect a visual function of the person under test based on the visual target.

Further, the mounting bracket comprises an adjustable frame, the adjustable frame is connected to one side of the test window, the electronic equipment is clamped in the adjustable frame, and the adjustable frame is used for adjusting the clamping space and adapting to the electronic equipment with different sizes.

Further, the adjustable frame comprises two telescopic frame installation ends which are oppositely arranged and two clamping fixing ends which are connected with the telescopic frame installation ends, wherein the telescopic frame installation ends are connected to one side of the test window, and the clamping fixing ends are abutted to the electronic equipment.

Further, the adjustable frame comprises two opposite side fixed connection ends and a plurality of movable abutting ends connected with the fixed connection ends, the fixed connection ends are connected to one side of the test window, the movable abutting ends are abutted to the electronic equipment, and the movable abutting ends are mutually staggered and are in relative sliding connection.

The present application provides a computer-readable storage medium having stored thereon a program which, when executed by a processor, implements a visual inspection method as described in any of the above.

In some embodiments, in the visual inspection method of the present application, the electronic device is disposed in a mounting bracket of an observer for visual inspection, and the pupil distance of the measured person is obtained, so that the pupil distance adjusted by the observer is consistent with the pupil distance of the measured person; under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, displaying a visual target positioned in the detection frame in a touch display screen of the electronic equipment, wherein the visual target is opposite to the test window and the observation channel; based on the visual optotype, the vision of the subject is detected. In this way, the visual optotype in the detection frame is displayed in the touch control display screen of the electronic equipment, another person is not required to be used as a pointed icon of the detected person, the detected person can operate by himself, visual inspection is carried out, and the detected person is convenient to use.

Drawings

Fig. 1a is a schematic perspective view illustrating an application of a visual inspection method according to an embodiment of the present application to a visual inspection system;

FIG. 1b is a schematic perspective view of the visual inspection system of FIG. 1a from another perspective;

FIG. 1c is a schematic perspective view of the visual inspection system of FIG. 1a from another perspective;

FIG. 2a is a schematic diagram of the internal lens system of the viewer of the visual inspection system of FIG. 1 a;

FIG. 2b is a schematic diagram of another view of the internal lens system of the viewer of FIG. 2 a;

fig. 3a is a schematic flow chart of visual contrast sensitivity detection of the visual detection method according to the embodiment of the present application;

FIG. 3b is a schematic diagram of a line-of-sight conversion of a second embodiment of step 120 of the visual inspection method of the present embodiment;

FIG. 4 is a flow chart illustrating the step 130 of the visual inspection method shown in FIG. 3 a;

fig. 5 is a flowchart of an application example of a visual inspection method provided in an embodiment of the present application;

fig. 6 is a schematic flow chart of vision testing according to the vision testing method provided in the embodiment of the present application;

FIG. 7 is a schematic view illustrating a vision testing procedure of the above-mentioned step 230 of the vision inspection method shown in FIG. 6;

Fig. 8 is a flowchart of an application example of the visual inspection method provided in the embodiment of the present application;

fig. 9 is a schematic structural diagram of a visual inspection device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 11a is a schematic diagram of a visual inspection system according to another embodiment of the present application;

FIG. 11b is a schematic view of the viewer of FIG. 11a from another perspective;

fig. 11c is a schematic view of a further view of the viewer of fig. 11 a.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with one or more embodiments of the present specification. Rather, they are merely examples of apparatus and methods consistent with aspects of one or more embodiments of the present description as detailed in the accompanying claims.

It should be noted that: in other embodiments, the steps of the corresponding method are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than described in this specification. Furthermore, individual steps described in this specification, in other embodiments, may be described as being split into multiple steps; while various steps described in this specification may be combined into a single step in other embodiments.

In order to solve the technical problem that another auxiliary person is needed to be used as a tested person to point out an icon and judge so as to cause inconvenience to the tested person, the embodiment of the application provides a visual detection method which is applied to electronic equipment.

The electronic equipment is arranged in the mounting bracket of the observer for visual detection to obtain the pupil distance of the measured person so that the pupil distance regulated by the observer is consistent with the pupil distance of the measured person; under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, displaying a visual target positioned in the detection frame in a touch display screen of the electronic equipment, wherein the visual target is opposite to the test window and the observation channel; based on the visual optotype, the vision of the subject is detected.

In this application embodiment, electronic equipment sets up in the installing support of viewer, and convenience of customers uses the operation. And the pupil distance of the tested person is obtained so that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, visual detection can be carried out on the pupil distance of the tested person, and the system is more personalized. In addition, under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, displaying a visual target positioned in the detection frame in a touch display screen of the electronic equipment, wherein the visual target is opposite to the test window and the observation channel; based on the visual optotype, the vision of the subject is detected. In this way, the visual optotype in the detection frame is displayed in the touch control display screen of the electronic equipment, another person is not required to be used as a pointed icon of the detected person, the detected person can operate by himself, visual inspection is carried out, and the detected person is convenient to use.

Fig. 1a is a schematic perspective view illustrating an application of the visual inspection method provided in the embodiment of the present application to a visual inspection system. Fig. 1b is a schematic perspective view of the visual inspection system of fig. 1a from another perspective. Fig. 1c is a third perspective view of the visual inspection system of fig. 1 a.

As shown in fig. 1 a-1 c, the visual inspection method may be applied to a visual inspection system 10. The visual inspection system 10 includes a viewer 30 for visual inspection, and an electronic device 20, the electronic device 20 being disposed within a mounting bracket 31 of the viewer 30. The visual inspection may include visual contrast sensitivity inspection and visual inspection.

The observer 30 includes an observation window 32 for observation by a subject, a test window 33 disposed opposite to and spaced apart from the observation window 32, and an observation path (not shown) formed between the observation window 32 and the test window 33, and the mounting bracket 31 is adjacent to the test window 33. The viewing channel (not shown) is located inside the housing of the viewer 30. The observation window 32 is closer to the eyes of the tested person than the test window 33, so that the tested person observes the test window 33 from the observation window 32 through an observation channel (not shown in the figure), and extends the observation range to the touch display screen of the electronic device 20. The distance between the viewing window 32 and the electronic device 20 is observed to simulate a standard vision testing distance. The distance between the viewing window 32 and the electronic device 20, the distance between the viewing window 32 and the touch display of the mobile phone, hereinafter also referred to as the viewing distance of the simulated viewing parameters of the viewer 30.

Fig. 2a is a schematic diagram showing the structure of an internal lens system of a viewer of the visual inspection system shown in fig. 1 a. Fig. 2b is a schematic diagram of another view of the internal lens system of the viewer of fig. 2 a.

As shown in fig. 2a and 2b, the viewer may use a lens system of a combination of plano-convex lens 341 and meniscus lens 342 to achieve a 3 meter distance simulating current vision requirements by reducing the visual target size over a short distance. The lens systems may include lens systems for the left eye and right eye, respectively. The single-eye lens system 34 includes a single meniscus lens 342 and a single plano-convex lens 341. In this way, the visual contrast sensitivity sighting target is reduced after passing through the concave-convex lens 342 and the convex lens 341, and barrel distortion can be reduced, so that the visual contrast sensitivity sighting target imaged in human eyes does not generate distortion, and meanwhile, the visual angle is the same as the visual angle required by the current visual contrast sensitivity in 3 meters detection, so that the visual contrast sensitivity detection is realized. And, through a piece of meniscus lens 342 and a piece of plano-convex lens 341 back reduce the visual target, and can reduce barrel distortion, when making the visual target that forms images in the human eye not produce the distortion, the visual angle is the same with the visual angle when simulating the actual observation distance test of 5 meters that current visual test required to realize visual testing.

In the example shown in fig. 2a and 2b, the lens used in the embodiment of the present application adopts an outer diameter of 14.40mm and an inner diameter of 11.80mm, wherein the width of the meniscus lens is 2.50mm, the width of the plano-convex lens is 3.00mm, x and Y are two visual axes respectively, and UC810 is a light source irradiation mode. The visual target is displayed by a touch display screen of the electronic device 20, and then the visual target is reduced after being combined with the regulated concave-convex lens and the plane-convex lens system, and the lens system can reduce barrel-shaped distortion, so that the visual target imaged in human eyes does not generate distortion, and the visual angle is the same as the visual angle required by the current visual contrast sensitivity in 3 meters detection. And the viewing angle is the same as that at the time of 5 meters test required by the current vision test.

Fig. 3a is a schematic flow chart of visual contrast sensitivity detection in the visual detection method according to the embodiment of the application.

As shown in fig. 3a, the visual inspection method may include, but is not limited to, steps 110 to 130:

step 110, obtain the pupil distance of the tested person, so that the pupil distance adjusted by the observer is consistent with the pupil distance of the tested person.

The pupil distance of the subject means the pupil distance of the subject himself. The method for obtaining the pupil distance in the step 110 may further include:

In one acquisition mode, the pupil distance input by the testee through the touch display screen is acquired.

In another acquisition mode, the pupil distance selected from the candidate pupil distances is displayed by the acquired subject through the touch-sensitive display screen.

The observer can be adjusted by itself to be consistent with the pupil distance of the tested person.

After step 110, the method further includes generating a prompt for prompting adjustment of the pupillary distance adjusted by the viewer; and receiving a notification instruction for the completion of the adjustment of the prompt information. In other implementations, the pupil distance adjusted by the adjustment viewer is consistent with the pupil distance of the subject according to the pupil distance displayed by the electronic device.

Step 120, displaying a visual contrast sensitivity visual target in the detection frame in the touch display screen of the electronic device under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, wherein the visual contrast sensitivity visual target is opposite to the test window and the observation channel. Therefore, the observation channel of the observer is opposite to the detection frame displayed by the mobile device, so that the screen of the electronic device is opposite to the visible area of the observer. This allows for the observation of visual contrast sensitivity targets.

The visual contrast sensitivity visual target can be used for displaying the opening direction of the visual target, and a tested person can distinguish the opening direction of the visual target to realize the detection of the visual contrast sensitivity. The visual contrast sensitivity optotype may include, but is not limited to, letters or numbers. By way of example, letters may be, but are not limited to, an E-letter optotype, a C-letter optotype, and the like. These visual contrast sensitivity targets may correspond to the targets of the visual contrast sensitivity detection table. Any visual contrast sensitivity optotype falls within the scope of embodiments of the present application and is not exemplified herein.

Step 130, based on the visual contrast sensitivity optotype, the visual contrast sensitivity of the tested person is detected.

After the step 130, the method further includes storing the result of each visual contrast sensitivity of the tested person, and storing the result in a server, so as to facilitate the tested person to know about the change of the visual contrast sensitivity.

Compared with the visual contrast sensitivity detection of the related art, the electronic equipment can be combined with the observer to perform rapid visual contrast sensitivity detection in the embodiment of the application under the guidance of a large field and auxiliary personnel, the visual contrast sensitivity self-detection of a detected person can be realized without requiring a large field and the position of the observer and the electronic equipment, and the visual contrast sensitivity can be rapidly detected.

In the touch display screen of the electronic device in step 120, displaying the visual contrast sensitivity optotype located in the detection frame may be implemented by any one of the following various embodiments:

the first embodiment of the above step 120 includes the following steps (1) to (3):

(1) And acquiring the screen resolution of the touch display screen of the electronic equipment.

(2) And determining the number of pixels required by the visual contrast sensitivity optotype according to the size of the single screen pixel of the screen resolution.

(3) And obtaining the visual contrast sensitivity visual target according to the number of the pixel points, and displaying the visual contrast sensitivity visual target in the detection frame.

The step (2) may, but is not limited to, include taking the ratio of the size of the visual contrast sensitivity target to the size of the pixel of the single screen as an integer according to the size of the visual contrast sensitivity target, so as to obtain the number of pixels required by the visual contrast sensitivity target. In this embodiment, the resolution of the touch display screen is calculated, so that the same size of visual contrast sensitivity targets can be ensured to be maintained in the touch display screens of electronic devices with different resolutions, the suitability of the visual contrast sensitivity targets is improved, and the requirements of testees of the electronic devices with different resolutions are met.

The implementation of the above-mentioned ratio of the size of the visual contrast sensitivity target to the size of the single screen pixel may include rounding down the ratio of the size of the visual contrast sensitivity target to the size of the single screen pixel, rounding up the ratio of the size of the visual contrast sensitivity target to the size of the single screen pixel, or rounding down the ratio of the size of the visual contrast sensitivity target to the size of the single screen pixel. In this way, incomplete pixels can be avoided, and at least a visual contrast sensitivity visual target displayed by a single screen pixel can be obtained.

The electronic device is illustrated by taking a mobile phone as an example:

the method comprises the steps of firstly, acquiring screen information of a touch display screen of electronic equipment, and calculating the width and the height of a single pixel point of the touch display screen. Wherein the screen information includes a width and a height of the screen.

And secondly, calculating the number of pixels required by the visual contrast sensitivity visual target according to the width and the height of the visual contrast sensitivity visual target. The formula is as follows:

P _w = V _w / S _w * S _wn

P _h = V _h / S _h * S _hn

V _w= V _h

wherein P is _w And P _h The number of the pixels required by the visual contrast sensitivity optotype in the width direction and the height direction is V _w And V _h Width and height, respectively, of visual contrast sensitivity optotype in inches, S _w And S is _h The width and the height of screen information of the touch display screen are respectively; s is S _wn And S is _hn The total number of pixels in the width direction and the height direction of the touch-sensitive display screen is respectively.

And thirdly, displaying visual contrast sensitivity optotype in the detection frame according to the number of the pixel points.

Illustratively, each pixel has a width and a height of 0.5cm and 0.5cm, respectively.

The width and height of the visual contrast sensitivity optotype are 2cm and 2cm respectively.

The number of pixels required for the visual contrast sensitivity optotype in the width and height directions is 2/0.5=4, respectively.

The second embodiment of the above step 120 includes the following steps 1) to 3):

1) And obtaining the actual observation distance of the observer.

2) The actual observation distance of the observer is converted into a fixed simulated observation parameter.

The fixed simulation observation parameters are determined according to the relation between the actual observation distance of the observer and the distances between the electronic equipment and the concave-convex lens and the distances between the concave-convex lens and the plano-convex lens. The simulated viewing parameters may include, but are not limited to, magnification including optical system

Or simulate the viewing distance between the handset and the viewer.

3) And adjusting the size of the visual contrast sensitivity visual target according to the simulated observation parameters to serve as the size of the visual contrast sensitivity visual target, and displaying the visual contrast sensitivity visual target in the detection frame.

Fig. 3b is a schematic diagram illustrating a line-of-sight conversion of a second embodiment of step 120 of the visual inspection method according to the embodiment of the present application.

The following electronic device will be described by taking a mobile phone as an example. As shown in fig. 3b, the magnification of the optical system can be derived from the formula under the precondition that the lens can be in an object-image relationship

And the relationship between the lens and the object, i.e. the content of the cell phone screen. The formula is as follows:

wherein, the liquid crystal display device comprises a liquid crystal display device,

is the optical power of meniscus 342, +.>

For a first distance between the phone and the meniscus 342, -, is->

Is the second distance of the meniscus 342 mirror from the plano-convex lens 341>

To require a simulated actual observation distance, the actual observation distance is, for example, a 3 meter distance for visual contrast sensitivity testing. The actual viewing distance is, for example, 5 meters from the vision test.

The mobile phone terminal can be according to

First distance->

Second distance->

And the actual observation distance->

Obtaining the magnification of the optical system >

Optotype is according to +.>

And displaying the visual target on a mobile phone screen after the multiplying power is reduced.

The second embodiment of step 120 described above includes the following < 1 > steps: < 1 > change in contrast with visual contrast sensitivity, visual contrast sensitivity optotypes are randomly displayed in a touch-controllable display screen of an electronic device. Thus, the opening directions of the visual contrast sensitivity sighting marks displayed by the touch display screen can be upward, downward, leftward and rightward respectively. The openings are randomly displayed, and the targets in the same direction are not continuously appeared, so that the detected person can not influence the detection result due to the history memory during multiple detection.

Fig. 4 is a flow chart illustrating the above step 130 of the visual inspection method shown in fig. 3 a.

As shown in fig. 4, the observation channel (not shown) of the viewer includes a left eye observation channel (not shown) and a right eye observation channel (not shown), the visual contrast sensitivity targets include a left eye target 411 and a right eye target 421, the detection frame 40 includes a left detection frame 41 having the left eye target 411 and a right detection frame 42 having the right eye target 421, and the left eye observation channel faces the left detection frame 41, and the right eye observation channel faces the right detection frame 42;

The above step 130 may further include the following three steps 1 > and 3 >. 1 >, a left eye visual target 411 located in the left detection frame 41 is displayed on the electronic device, and the left eye visual contrast sensitivity of the subject is detected. 2 >, a right eye visual target 421 positioned in the right detection frame 42 is displayed on the electronic device, and the right eye visual contrast sensitivity of the subject is detected. 3, displaying the left eye visual target positioned in the left detection frame and the right eye visual target positioned in the right detection frame on the electronic equipment, and detecting the binocular vision contrast sensitivity of the tested person.

Continuing with fig. 4, the touch-sensitive display 62 includes a detection frame 40 and an operable area 50 for the subject to determine the direction of the visual contrast sensitivity target, the operable area 50 is located around the visual contrast sensitivity target, and an operation space exists between the operable area 50 and the test window. The operable area 50 is avoided from the test window, so that a tested person can conveniently operate the electronic device 20, and the detection of the observation visual contrast sensitivity optotype is not affected. The operable area is positioned below the observer, so that the user can operate the device conveniently. The operable area is located in an area below the visual contrast sensitivity visual target, so that the visual contrast sensitivity visual target is convenient for a user to observe and operate.

Referring to fig. 4, the step 130 may further include a 1 st step of obtaining an operation direction of the user touch operation on the visual contrast sensitivity target based on the visual contrast sensitivity target; comparing whether the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target; if so, i.e. the direction of operation is consistent with the opening orientation of the visual contrast sensitivity target, step 2 is performed. If not, i.e. the direction of operation is not consistent with the opening orientation of the visual contrast sensitivity target, step 3 is performed.

The user touch operation may include a sliding operation or a clicking operation. The operation directions include an upward operation direction, a downward operation direction, a leftward operation direction, and a rightward operation direction, respectively. The opening of the visual contrast sensitivity sighting target is oriented to reflect the correct sighting target direction. The operation direction is used for reflecting the sighting target direction judged by the testee.

Step 2, determining that the judgment of the visual contrast sensitivity optotype by the testee is correct;

and 3, determining that the judgment of the testee on the visual contrast sensitivity optotype is incorrect.

The colors of the detection frame 40 and the operable area 50 may be set according to the user's requirement. In some embodiments, the detection frame 40 and the operable area 50 are located on the touch-sensitive display 62 of the electronic device in the visible region of the viewer, the detection frame 40 is white, the visual contrast sensitivity optotype in the detection frame 40 is black, and the operable area 50 is white. Therefore, the edge can be highlighted, the contrast is increased, the visual contrast sensitivity detection sighting target observed by a tested person is clearer, the surrounding background can be weakened by the visual center, the visual fatigue of the long-time visual contrast sensitivity is weaker, the visual fatigue of the long-time visual contrast sensitivity is relieved, and the effect of detecting the visual contrast sensitivity by a user is improved. In other embodiments, the color of the detection frame and the color of the operable area are different, and any color that distinguishes the detection frame and the operable area is within the scope of the embodiments of the present application.

Continuing with the example shown in fig. 4, the visual contrast sensitivity optotype is an E-word optotype, the electronic device is a cell phone, and the user touch operation is exemplified by a sliding operation.

The orientation of the E-letter optotype displayed on the touch display 62 is completely randomly displayed by the program, there is no fixed scheme, and the optotypes in the same direction do not appear continuously, so as to ensure that the detection result is not affected by the history memory when the inspector detects for multiple times, so as to simulate the appearance of different letters in the traditional alphabet. The testee views the mobile phone touch display screen 62 through the viewer, judges the E optotype direction, and slides up, down, left and right on the touch display screen 62 to perform optotype selection. The E-shaped optotype can reduce the contrast in the detection process for 6 times, and 20% of the reduction is performed each time, so that the detection condition of users under different contrasts is simulated. The APP belongs to an approximate visual contrast sensitivity detection, cannot obtain accurate detection numbers, and only obtains five grades of differentiation of low, medium, high and high.

Whether the sliding direction of the tested person is the correct sighting target direction is judged by sensing the sliding direction of the tested person, the sighting target contrast is reduced for 2 times continuously, the detection is continued, and the detection is terminated for 2 times continuously. After the detection is finished, the detection result is displayed in a screen, and the result is uploaded to a server at the same time, so that the detection result of each time is recorded, and the testee is helped to know the development condition of visual contrast sensitivity.

Firstly, detecting visual contrast sensitivity of a right eye, then detecting visual contrast sensitivity of a left eye, and finally, detecting visual contrast sensitivity of the left eye and the right eye simultaneously. Of course, this is merely an example, and is not intended to be limiting in order. The visual contrast sensitivity detection of the left eye may be performed first, then the visual contrast sensitivity detection of the right eye may be performed, and finally the visual contrast sensitivity detection of the left eye and the visual contrast sensitivity detection of the right eye may be performed simultaneously. The E-shaped optotypes of each visual angle are 5 in total, if the error number of the optotypes in the directions judged by the testee is more than or equal to 3, the fact that the optotypes in the directions cannot be judged is indicated, and the previous optotype is taken as a visual contrast sensitivity detection result of the eyes. After the binocular vision contrast sensitivity detection is finished, the vision contrast sensitivity detection result is displayed in the touch display screen, and the vision contrast sensitivity result is uploaded to the server at the same time, so that the vision contrast sensitivity result of each time is recorded, and the testee is helped to know the development condition of the vision contrast sensitivity.

Fig. 5 is a flowchart of an application example of the visual inspection method provided in the embodiment of the present application.

Step 210, log in the mobile phone visual contrast sensitivity application to enter the interface of the visual contrast sensitivity application. Thus, the security of personal information is improved by logging in the mobile phone of the person to be tested.

And 220, clicking a visual contrast sensitivity item of the visual contrast sensitivity application, and guiding the observer and the mobile phone to be assembled according to the visual contrast sensitivity application.

The step 220 is to assemble the observer and the mobile phone according to the visual contrast sensitivity application guidance, specifically, to select the pupil distance of the tested person in the visual contrast sensitivity application, and adjust the pupil distance adjusted by the observer at the same time, and assemble the observer by aiming at two detection frames displayed in the mobile phone screen according to the prompt.

The viewer uses a combination of plano-convex and meniscus lenses, and changes the E-optotype size through the lens system, so that the user can simulate the remote detection in the traditional sensitive contrast detection. The 3-meter distance required by the current contrast sensitivity detection is simulated.

Step 230, respectively detecting the right eye visual contrast sensitivity, the left eye visual contrast sensitivity and the binocular visual contrast sensitivity according to the content displayed on the touch display screen of the mobile phone observed in the observer.

The above step 230 further performs right eye visual contrast sensitivity and left eye visual contrast sensitivity, and the detection of binocular contrast sensitivity may include step 1, detecting the user right eye contrast sensitivity starting from 100% contrast.

Step 3, right eye contrast sensitivity detection is performed 2 times in succession. If yes, namely, the right eye optotype with the same visual angle is continuously judged to be wrong 2 times, the right eye contrast sensitivity detection is ended. If not, namely that the right eye targets at the same visual angle are not continuously judged to be wrong 2 times, the step 4 is executed.

And 4, continuing the right eye contrast sensitivity detection, reducing the contrast by 20%, and returning to continue to execute the 3 rd step.

Step 5, after the right eye contrast sensitivity detection is finished, the left eye contrast sensitivity of the user is detected from 100% contrast.

Step 7, detecting whether the left eye contrast sensitivity is continuously wrong 2 times. If yes, namely, the left eye optotype of the same visual angle is continuously judged to be wrong 2 times, the right eye contrast sensitivity detection is ended. If not, that is, the left eye targets of the same viewing angle are not continuously judged to be wrong 2 times, the 8 th step is executed.

And 8, continuing the left eye contrast sensitivity detection, reducing the contrast by 20%, and returning to continue to execute the 7 th step.

Step 9, after the right eye contrast sensitivity detection is finished, starting the binocular contrast sensitivity detection from 100% contrast.

Step 10, detecting whether the binocular contrast sensitivity is continuously wrong 2 times. If yes, namely, the binocular vision target of the same visual angle is continuously judged to be wrong 2 times, the binocular contrast sensitivity detection is finished. If not, that is, the binocular vision target of the same viewing angle is not continuously judged to be wrong 2 times, the 11 th step is executed.

And 11, continuing the binocular contrast sensitivity detection, reducing the contrast by 20%, and returning to continue to execute the 10 th step. And (3) finishing the whole visual sensitivity detection, displaying a detection record, and uploading a visual contrast sensitivity result to a server.

In the process, a tested person checks the mobile phone screen through the observer, judges the E optotype direction and slides up, down, left and right on the screen to select the optotype. The E-shaped optotype can reduce the contrast in the detection process for 6 times, the module judges whether the direction of the optotype is correct or not by sensing the sliding direction of a tested person, the contrast of the optotype is reduced for 2 times continuously, the detection is continued, and the detection is terminated for 2 times continuously. After the detection is finished, the detection result is displayed in a screen, and the result is uploaded to a server at the same time, so that the detection result of each time is recorded, and the testee is helped to know the development condition of visual contrast sensitivity.

And 240, entering a visual contrast sensitivity detection recording interface after the detection is finished, and checking the result of the past visual contrast sensitivity of the tested person.

Of course, the detection sequence of the right eye visual contrast sensitivity, the left eye visual contrast sensitivity and the binocular contrast sensitivity is not limited, and any detection capable of realizing the visual contrast sensitivity of the embodiments of the present application belongs to the protection scope of the embodiments of the present application.

According to the visual detection method, visual contrast sensitivity detection can be achieved, rapid visual contrast sensitivity detection is carried out through a mode of combining an observer and a smart phone, the defect that complicated operation and visual nurse auxiliary guidance are needed in comparison with the traditional visual contrast sensitivity detection table is overcome, self-detection can be carried out without any large field, visual contrast sensitivity can be detected rapidly, a result is obtained, and the result is similar to that of traditional visual contrast sensitivity detection.

Fig. 6 is a schematic flow chart of vision testing according to the vision testing method according to the embodiment of the present application.

The embodiment of fig. 6-8 is similar to the embodiment of fig. 3 a-5, and in the embodiment of fig. 6-8, the visual inspection method may include, but is not limited to, steps 310-330, as compared to the embodiment of fig. 3 a-5:

in step 310, the pupillary distance of the subject is obtained so that the pupillary distance adjusted by the observer coincides with the pupillary distance of the subject.

After step 310, the method further includes generating a prompt for prompting adjustment of the pupillary distance of the viewer; and receiving a notification instruction for the completion of the adjustment of the prompt information. In other implementations, the pupil distance of the observer is adjusted to be consistent with the pupil distance of the subject according to the pupil distance displayed by the electronic device.

Step 320, displaying the vision target in the detection frame in the touch display screen of the electronic device under the condition that the pupil distance of the observer is consistent with the pupil distance of the tested person, wherein the vision target is opposite to the test window and the observation channel. Therefore, the observation channel of the observer is opposite to the detection frame displayed by the mobile device, so that the screen of the electronic device is opposite to the visible area of the observer. This allows for the observation of visual targets.

The vision optotype can be used for displaying the opening direction of the optotype, and a testee can distinguish the opening direction of the optotype for vision detection. The visual optotype may include, but is not limited to, letters or numbers. By way of example, letters may be, but are not limited to, an E-letter optotype, a C-letter optotype, and the like. These visual contrast sensitivity targets may correspond to targets of a vision test chart. Any visual optotype falls within the scope of embodiments of the present application and is not exemplified herein.

Step 330, based on the vision optotype, vision test of the tested person is performed.

After the step 330, the method further includes storing the test result of each vision of the tested person and storing the test result in a server, so as to facilitate the tested person to know about the vision change.

Compared with the vision testing of the related art, the vision testing device has the advantages that large fields and auxiliary personnel are needed for guidance, in the embodiment of the application, the electronic equipment can be combined with the observer to perform quick vision testing, the large fields are not required, the position of the observer and the position of the electronic equipment are needed, the vision self-testing of a tested person can be realized, and the vision can be quickly detected.

In the touch-controllable display screen of the electronic device in step 320, displaying the visual target located in the detection frame may be implemented by any one of the following various embodiments:

the first embodiment of the above step 320 includes the following steps (1) to (3):

(2) And determining the number of pixels required by the vision optotype according to the size of the single screen pixel of the screen resolution.

(3) And obtaining the vision optotype according to the number of the pixel points, and displaying the vision optotype in the detection frame.

The step (2) may, but is not limited to, include taking the ratio of the size of the vision target to the size of the pixel of the single screen as an integer according to the size of the vision target, to obtain the number of pixels required by the vision target. In this embodiment, the resolution of the touch display screen is calculated, so that the same size vision target can be ensured to be maintained in the touch display screens of electronic devices with different resolutions, the adaptability of the vision target is improved, and the requirements of testees of the electronic devices with different resolutions are met.

The implementation of the above-mentioned integer ratio of the size of the vision target to the size of the single screen pixel may include rounding down the ratio of the size of the vision target to the size of the single screen pixel, or rounding up the ratio of the size of the vision target to the size of the single screen pixel, or rounding down the ratio of the size of the vision target to the size of the single screen pixel. In this way, incomplete pixels can be avoided, and at least a single screen pixel can be obtained for displaying the visual optotype.

The electronic device is illustrated by taking a mobile phone as an example:

And secondly, calculating the number of pixels required by the vision target according to the width and the height of the required vision target. The formula is as follows:

P _w = V _w / S _w * S _wn

P _h = V _h / S _h * S _hn

V _w= V _h

wherein P is _w And P _h The number of the pixels required by the vision optotype in the width direction and the height direction is V _w And V _h Width and height, respectively, of the visual target in inches, S _w And S is _h The width and the height of screen information of the touch display screen are respectively; s is S _wn And S is _hn The total number of pixels in the width direction and the height direction of the touch-sensitive display screen is respectively.

And thirdly, displaying the vision optotype in the detection frame according to the number of the pixel points.

The width and height of the visual optotype were 2cm and 2cm, respectively.

The number of pixels required for the visual optotype in the width and height directions is 2/0.5=4 and 2/0.5=4, respectively.

Continuing with the second embodiment of step 320 described above, as shown in FIG. 3b, may include the following steps 1) through 3):

1) And obtaining the actual observation distance of the observer.

Or simulate the viewing distance between the handset and the viewer.

3) And adjusting the size of the vision target according to the simulated observation parameters, and displaying the vision target in the detection frame as the size of the vision target.

The second embodiment of step 320 described above includes the following < 1 > step: < 1 > with different visual targets sizes, the visual targets are randomly displayed in a touch-control display screen of the electronic equipment. Thus, the opening directions of the visual targets displayed by the touch control display screen can be upward, downward, leftward and rightward respectively. The openings are randomly displayed, and the optotypes in the same direction are not continuously displayed, so that the tested person can not influence the test result due to the history memory in multiple tests. In particular, in that the lens is capable of forming an object-image relationshipUnder the precondition of (1), the magnification of the optical system can be obtained by deduction according to a formula

Relation with the lens and object, i.e. the content of the mobile phone screen, as described above +.>

A formula.

Fig. 7 is a schematic view illustrating a vision testing procedure of the above-mentioned step 330 of the vision inspection method shown in fig. 6.

As shown in fig. 7, the observation channel (not shown) of the viewer includes a left eye observation channel (not shown) and a right eye observation channel (not shown), the vision target includes a left eye target 411 and a right eye target 421, the detection frame 40 includes a left detection frame 41 having the left eye target 411 and a right detection frame 42 having the right eye target 421, and the left eye observation channel faces the left detection frame 41, and the right eye observation channel faces the right detection frame 42;

The above step 330 may further include the following two steps 1 > and 2 >. 1 >, a left eye optotype 411 positioned in the left detection frame 41 is displayed on the electronic device, and left eye vision of the subject is detected. 2 >, a right eye optotype 421 positioned in the right detection frame 42 is displayed on the electronic device, and the right eye vision of the subject is detected.

Continuing with fig. 7, the touch-sensitive display 62 includes a detection frame 40 and an operable area 50 for the subject to determine the direction of the visual target, the operable area 50 is located around the visual target, and an operation space exists between the operable area 50 and the test window. The operable area 50 is disposed away from the test window, which facilitates operation of the electronic device 20 by the subject without affecting the viewing of the optotype.

The operable area is positioned below the observer, so that the user can operate conveniently. The operable area is located in the area below the vision optotype, so that the vision optotype can be observed by a user conveniently and operated by the user conveniently.

As shown in fig. 7, the step 330 may further include a 1 st step of acquiring, based on the visual target, an operation direction of a user touch operation on the visual target; comparing whether the operation direction is consistent with the opening direction of the vision optotype; if so, i.e. the direction of operation coincides with the opening orientation of the visual target, step 2 is performed. If not, i.e. the direction of operation is not consistent with the opening orientation of the visual target, step 3 is performed.

The user touch operation may include a sliding operation or a clicking operation. The operation directions include an upward operation direction, a downward operation direction, a leftward operation direction, and a rightward operation direction, respectively. The opening of the vision optotype is oriented to reflect the correct optotype direction. The operation direction is used for reflecting the sighting target direction judged by the testee.

Step 2, determining that the determination of the vision optotype by the testee is correct;

and 3, determining that the determination of the vision optotype by the tested person is incorrect.

The colors of the detection frame 40 and the operable area 50 may be set according to the user's requirement. In some embodiments, the detection frame 40 and the operable area 50 are located on the touch-sensitive display 62 of the electronic device in the visible region of the viewer, the detection frame 40 is white in color, the visual target in the detection frame 40 is black in color, and the operable area 50 is white in color. Therefore, the edge can be highlighted, the contrast is increased, the vision detection optotype observed by a tested person is the clearest, the surrounding background can be weakened by the vision center, the vision fatigue of long-time vision detection is weaker, the vision fatigue of long-time vision detection is relieved, and the vision testing effect of a user is improved. In other embodiments, the color of the detection frame and the color of the operable area are different, and any color that distinguishes the detection frame and the operable area is within the scope of the embodiments of the present application.

Continuing with the example shown in fig. 7, the visual optotype is illustrated as an E-letter optotype, the electronic device is illustrated here as a cell phone, and the user touch operation is illustrated as a sliding operation.

The periphery of the detection frame 40 of the viewer is a black irrelevant background. The subject views the touch-sensitive display 62 of the cell phone through a viewer. Sliding operations such as up, down, left, right, etc. are performed on the touch-controllable display 62 to determine the direction of the optotype. And judging whether the sliding direction of the tested person is the correct sighting target direction or not by sensing the sliding direction of the tested person so as to determine whether to reduce the sighting target size and continue the test or terminate the test.

The vision test for the right eye is performed first and then the vision test for the left eye is performed, but the present invention is not limited to this, and the vision test for the left eye may be performed first and then the vision test for the right eye. The E-shaped optotypes of each visual angle are 5 in total, if the error number of the optotypes in the directions judged by the testee is more than or equal to 3, the fact that the optotypes in the directions cannot be judged is indicated, and the previous optotype is taken as the vision detection result of the eyes. After the binocular vision detection is finished, the vision detection result is displayed in the touch display screen, and the vision detection result is uploaded to the server at the same time, so that the vision detection result of each time is recorded, and the tested person is helped to know the vision development condition.

Fig. 8 is a flowchart of an application example of the visual inspection method provided in the embodiment of the present application.

Step 510, log in the mobile phone vision testing application to enter the interface of the vision testing application. Thus, the security of personal information is improved by logging in the mobile phone of the person to be tested.

And step 520, clicking on a vision testing project of the vision testing application, and assembling the viewer and the mobile phone according to the vision testing application guidance.

The step 520 is to assemble the observer and the mobile phone according to the guidance of the vision testing application, specifically, to select the pupil distance of the tested person in the vision testing application, and adjust the pupil distance of the observer at the same time, and to assemble the observer by aiming at two detection frames displayed in the screen of the mobile phone according to the prompt.

And 530, respectively performing right eye vision detection and left eye vision detection according to the content displayed by the touch display screen of the mobile phone observed in the observer.

Further to the right eye vision testing and left eye vision testing of step 530 described above may include step 1, starting the user's right eye vision testing from a viewing angle of 4.0.

And 2, waiting for the user to finish the test of the right eye optotype with 1 current visual angle.

And 3, judging whether the number of errors of the right eye targets with the same visual angle is more than or equal to 3. If so, namely, the right eye optotype with the same visual angle judges that the error number is more than or equal to 3, the step 5 is executed. If not, namely the right eye optotype of the same visual angle judges that the error number is smaller than 3, the step 4 is executed.

And 4, judging whether the current visual angle is 5.0. If so, i.e. the current viewing angle is 5.0, step 5 is performed. If not, i.e. the current viewing angle is not 5.0, the step 2 is performed back.

Step 5, starting the left eye vision test of the user from the angle of view of 4.0.

And 6, waiting for the user to finish the test of the left eye optotype with 1 current visual angle.

And 7, judging whether the number of errors of the left eye targets with the same visual angle is more than or equal to 3. If so, i.e. the left eye optotype with the same viewing angle has a judgment error number greater than or equal to 3, step 540 is performed. If not, namely the left eye optotype of the same visual angle judges that the error number is smaller than 3, the step 8 is executed.

Step 8, whether the current visual angle is 5.0. If so, i.e., the current view is 5.0, step 540 is performed. If not, i.e. the current viewing angle is not 5.0, return to step 6.

And step 540, entering a vision testing recording interface after finishing the testing, and checking the calendar vision testing result of the tested person.

The vision detection method is suitable for being used in a smaller room under the condition of limited space, can help a user to realize remote vision detection under the assistance of no other person through the combination of the observer and the mobile phone APP, can help the user to realize remote vision detection under the assistance of no other person, can quickly and conveniently carry out multi-person vision detection, and can immediately start detection when one person detection is finished and the next person can immediately start detection.

Fig. 9 is a schematic structural diagram of a visual inspection device according to an embodiment of the present application.

Based on the same application conception as the above method, the embodiment of the present application provides a visual inspection device. As shown in fig. 9, the visual inspection device includes a processor 61 and a touch-sensitive display 62.

A processor 61 for acquiring a pupil distance of the subject;

the touch display screen 62 is configured to display a visual target located in the detection frame, where the pupil distance adjusted by the observer is consistent with the pupil distance of the person under test, and the visual target is opposite to the test window and the observation channel;

the processor 61 is further configured to detect a visual function of the subject based on the visual target.

In some embodiments, the processor 61 is configured to obtain a pupil distance of the subject;

the touch display screen 62 is configured to display a visual contrast sensitivity visual target located in the detection frame, where the pupil distance adjusted by the observer is consistent with the pupil distance of the person under test, and the visual contrast sensitivity visual target faces the test window and the observation channel;

the processor 61 is further configured to detect the visual contrast sensitivity of the subject based on the visual contrast sensitivity visual target.

In some embodiments, the processor 61 includes a read system data sub-module for obtaining a screen resolution of the touch-sensitive display 62 of the electronic device;

the optotype determining module is used for determining the number of the pixels required by the visual contrast sensitivity optotype according to the size of a single screen pixel of the screen resolution;

the processing sub-module is used for obtaining visual contrast sensitivity visual targets according to the number of pixel points and outputting the visual contrast sensitivity visual targets to the touch display screen 62;

the touch-sensitive display 62 is specifically configured to display a visual contrast sensitivity optotype in the detection frame.

In some embodiments, the optotype determining module is specifically configured to, according to the size of the visual contrast sensitivity optotype, take an integer from a ratio of the size of the visual contrast sensitivity optotype to the size of a single screen pixel to obtain the number of pixels required by the visual contrast sensitivity optotype.

In some embodiments, the processor 61 includes a viewer data reading sub-module for obtaining an actual viewing distance of the viewer;

The processing sub-module is used for obtaining the visual contrast sensitivity visual target according to the size of the adjusted visual contrast sensitivity visual target and outputting the visual contrast sensitivity visual target to the touch display screen 62;

In some embodiments, the processor 61 is specifically configured to randomly display visual contrast sensitivity targets within the touch-sensitive display 62 of the electronic device with changes in contrast of the visual contrast sensitivity.

In some embodiments, the viewing channels of the viewer include a left eye viewing channel and a right eye viewing channel, the visual contrast sensitivity targets include a left eye target 411 and a right eye target 421, the detection frames include a left detection frame 41 having the left eye target 411 and a right detection frame 42 having the right eye target 421, and the left eye viewing channel is facing the left detection frame 41 and the right eye viewing channel is facing the right detection frame 42;

in the touch display screen 62 of the electronic device, a visual contrast sensitivity visual target located in the detection frame is displayed, and the detection of the visual contrast sensitivity of the tested person is performed, including:

displaying a left eye visual target 411 positioned in the left detection frame 41 on the electronic equipment, and detecting the left eye visual contrast sensitivity of the tested person;

Displaying a right eye visual target 421 positioned in a right detection frame 42 on the electronic equipment, and detecting the right eye visual contrast sensitivity of the tested person;

In some embodiments, the detection frame includes an operable area for the subject to determine a direction of the visual contrast sensitivity target, the operable area being located around the visual contrast sensitivity target, and an operation space being present between the operable area and the test window;

the processor 61 includes a judging sub-module, and the processor is specifically configured to obtain, based on the visual contrast sensitivity target, an operation direction of a user touch operation on the visual contrast sensitivity target; the judging submodule is used for comparing whether the operation direction is consistent with the opening direction of the visual contrast sensitivity sighting target; under the condition that the operation direction is consistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the visual contrast sensitivity visual target by the tested person is correct; in the case that the operation direction is inconsistent with the opening direction of the visual contrast sensitivity visual target, determining that the judgment of the visual contrast sensitivity visual target by the tested person is incorrect.

The implementation process of the functions and roles of each module/sub-module in the above device is specifically shown in the implementation process of the corresponding steps in the above method, and will not be described herein again.

In other embodiments, the touch-sensitive display 62 is configured to display a vision target located in the detection frame, where the pupil distance of the viewer is consistent with the pupil distance of the person under test, and the vision target faces the test window and the observation channel;

the processor 61 is also used for detecting the eyesight of the tested person based on the eyesight optotype.

the optotype determining module is used for determining the number of pixels required by the vision optotype according to the size of a single screen pixel of the screen resolution;

the processing sub-module is used for obtaining vision optotype according to the number of the pixel points and outputting the vision optotype to the touch display screen 62;

the touch-sensitive display 62 is specifically used for displaying the vision optotype in the detection frame.

In some embodiments, the optotype determining module is specifically configured to, according to the size of the optotype, take an integer from a ratio of the size of the optotype to the size of a single screen pixel to obtain the number of pixels required by the optotype.

a processing sub-module for obtaining the vision target according to the adjusted size of the vision target and outputting the vision target to the touch-control display screen 62;

In some embodiments, the processor 61 is specifically configured to randomly display the visual optotype within the touch-enabled display 62 of the electronic device.

In some embodiments, the viewing channels of the viewer include a left eye viewing channel and a right eye viewing channel, the vision target includes a left eye target 411 and a right eye target 421, the detection frames include a left detection frame 41 having the left eye target 411 and a right detection frame 42 having the right eye target 421, and the left eye viewing channel is facing the left detection frame 41 and the right eye viewing channel is facing the right detection frame 42;

in a touch-sensitive display screen 62 of an electronic device, a visual acuity chart in a detection frame is displayed, and vision detection of a person to be detected is performed, including:

Displaying a left eye visual target 411 positioned in the left detection frame 41 on the electronic device, and detecting the left eye vision of the tested person;

the right eye vision test of the subject is performed by displaying the right eye optotype 421 positioned in the right test frame 42 on the electronic device.

In some embodiments, the detection frame includes an operable area for the subject to determine the direction of the vision target, the operable area being located around the vision target, and an operating space being present between the operable area and the test window;

the processor 61 includes a judging sub-module, and is specifically configured to obtain, based on the vision target, an operation direction of a user touch operation on the vision target; the judging submodule is used for comparing whether the operation direction is consistent with the opening direction of the vision optotype; under the condition that the operation direction is consistent with the opening direction of the vision optotype, determining that the judgment of the vision optotype by the testee is correct; in the case where the operation direction does not coincide with the opening direction of the visual target, it is determined that the determination of the visual target by the subject is incorrect.

The visual inspection method described above may be applied to APP (Application) of the electronic device 20, for example. Further, the vision inspection method may be applied to a vision testing apparatus. Of course, the electronic device 20 may be, but not limited to, a mobile phone, a tablet computer, etc. And are not exemplified here. With the popularization of mobile phones, more users can use the mobile phones more conveniently. For details, see below.

Fig. 10 is a schematic structural diagram of an electronic device 20 according to an embodiment of the present application.

Continuing with fig. 1a, fig. 1c, and fig. 10, the electronic device provided in the embodiments of the present application includes the above-mentioned visual detection device.

As shown in fig. 10, the electronic device 20 includes one or more processors 61 for implementing the visual inspection method as described above.

In some embodiments, the electronic device 20 may include a computer-readable storage medium 69, and the computer-readable storage medium 69 may store programs that may be invoked by the processor 61 and may include a non-volatile storage medium. In some embodiments, electronic device 20 may include memory 68 and interface 67. In some embodiments, electronic device 20 may also include other hardware depending on the application.

The computer-readable storage medium 69 of the embodiment of the present application has stored thereon a program for implementing the visual inspection method as described above when executed by the processor 61.

The present application may take the form of a computer program product embodied on one or more computer-readable storage media 69 (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having program code embodied therein. Computer readable storage media 69 include both permanent and non-permanent, removable and non-removable media, and may be any method or technology for information storage. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer readable storage media 69 include, but are not limited to: phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Disks (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, may be used to store information that may be accessed by the computing device.

In some embodiments, a computer-readable storage medium having stored therein machine-executable instructions that when executed by a processor implement the method described above is also provided. For example, the computer readable storage medium may be ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

The present embodiments also provide a computer program stored on a computer readable storage medium, such as a memory, and which when executed by a processor causes the processor 71 to perform the method described above.

As further shown in fig. 1a and 1c, embodiments of the present application provide a visual inspection system, including an observer for visual inspection, and an electronic device as above, the electronic device being disposed within a mounting bracket of the observer; the electronic equipment comprises a processor and a touch display screen connected with the processor;

the processor is used for acquiring the pupil distance of the tested person;

the observer is used for adjusting the pupil distance regulated by the observer to be consistent with the pupil distance of the tested person according to the pupil distance;

the touch control display screen is used for displaying a visual target positioned in the detection frame under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, the visual target is opposite to the test window and the observation channel, and the processor is also used for detecting the vision of the tested person based on the visual target.

In the embodiment shown in fig. 1a to 1c, the mounting bracket 31 includes an adjustable frame 311, the adjustable frame 311 is connected to one side of the test window 33, the electronic device 20 is clamped in the adjustable frame 311, and the adjustable frame 311 adjusts the clamping space for adapting to electronic devices 20 with different sizes. Thus, the same observer 30 can be used by the electronic devices 20 with different sizes, so that the same observer 30 can be adapted to the electronic devices 20 with different sizes, and the convenience in use of users of different electronic devices is improved.

The adjustable frame 311 includes two opposite fixed connection ends 311a and a plurality of movable connection ends 311b connected to the fixed connection ends 311a, the fixed connection ends 311a are connected to one side of the test window 33, the movable connection ends 311b are connected to the electronic device 20 in an abutting manner, and the movable connection ends 311b are mutually staggered and slidingly connected. Therefore, the sliding adjustment is smoother, and the sliding adjustment is more convenient for users to use.

The two side fixing connection ends 311a include a plurality of mounting screws arranged side by side. And, the plurality of movable abutting ends 311b may include a plurality of sliding bars or rails disposed side by side. The plurality of movable abutting ends 311b are overlapped and crossed with each other, and can be separated or attached.

Fig. 11a is a schematic structural diagram of a viewer 30 of a visual inspection system according to another embodiment of the present application. Fig. 11b is a schematic diagram of a structure of another view angle of the viewer 30 shown in fig. 11 a. Fig. 11c is a schematic diagram showing a structure of a further view angle of the viewer 30 shown in fig. 11 a.

The embodiment shown in fig. 11a to 11c is similar to the embodiment shown in fig. 1a to 1c, and in comparison to the embodiment shown in fig. 1a to 1c, the mounting bracket 31 comprises an adjustable bracket 311 in the embodiment shown in fig. 11a to 11 c. The adjustable frame 311 includes two opposite telescopic frame mounting ends 312a and two fixed ends 312b respectively connected to the two telescopic frame mounting ends 312a, wherein the telescopic frame mounting ends 312a are connected to one side of the test window 33, and the fixed ends 312b are abutted to the electronic device 20. Thus, the sliding adjustment is more convenient, the single point is supported on the mounting end 312a of the unilateral telescopic rack, and after the unilateral adjustment is finished, the other side is adjusted, so that the sliding adjustment is more convenient for users to use.

The telescopic bracket mounting end 312a is extendable or contractible in the longitudinal direction of the electronic device 20 with the connection with the scope 30 as an axis. The telescoping boom mounting end 312a includes an elastic member and a connecting member connected to the elastic member. Illustratively, the elastic member is a spring and the connecting member is a connecting rod.

The two-sided telescoping rack mounting end 312a includes a plurality of telescoping rack mounts disposed side-by-side.

The two side clamping and fixing ends 312b may include a plurality of clamping rods or clamping sheets arranged side by side. The fixed ends 312b are clamped at both sides, and a friction rubber sheet for preventing falling off can be arranged on the two sides. This also ensures the stability of the fixed connection of the electronic device 20 to the viewer 30.

The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises the depicted element.

Claims

1. The utility model provides a visual inspection method, its characterized in that is applied to electronic equipment, electronic equipment sets up in the installing support that is used for the viewer of visual inspection, the viewer includes the observation window that is used for being surveyed the person to observe, with observation window just and the test window that the interval set up, and be located the observation passageway that forms between observation window and the test window, just, the installing support is close to the test window sets up, visual inspection method includes:

displaying a visual target positioned in a detection frame in a touch display screen of the electronic equipment under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, wherein the visual target is opposite to the test window and the observation channel; the opening directions of the visual targets displayed by the touch display screen are upward, downward, leftward and rightward respectively, the opening directions are randomly displayed, and the targets in the same direction cannot continuously appear; the touch display screen comprises the detection frame and an operable area for the testee to judge the direction of the visual target, the operable area is positioned around the visual target, and an operation space exists between the operable area and the test window; and displaying a visual target positioned in a detection frame in a touch control display screen of the electronic equipment, wherein the visual target comprises: randomly displaying visual contrast sensitivity optotypes corresponding to the preset proportion of each reduced contrast in a touchable screen of the electronic equipment according to the preset proportion of each reduced contrast of the visual contrast sensitivity so as to finish visual contrast sensitivity detection corresponding to the contrast of at least five levels of preset proportions; and randomly displaying the vision optotype in the touch display screen of the electronic equipment according to the sizes of the different vision optotypes;

Detecting a visual function of the subject based on the visual optotype; wherein the detecting of the visual function of the subject based on the visual optotype includes: acquiring an operation direction of user touch operation on the visual target based on the visual target; judging whether the operation direction is the correct sighting target direction or not by sensing the operation direction of the user touch operation of the tested person so as to determine to reduce the sighting target size and continue the test or terminate the test; if the direction of the visual target is judged to be continuously wrong for a preset number of times, ending the detection of the visual function corresponding to the eyes of the detected person; the detection of the visual function comprises detection of visual contrast sensitivity and visual testing; the predetermined number of times includes 2 times.

2. The visual inspection method of claim 1, wherein displaying the visual optotype within the inspection frame within the touch-sensitive display screen of the electronic device comprises:

3. The visual inspection method of claim 2, wherein displaying the visual contrast sensitivity optotype in the inspection frame in the touch-sensitive display of the electronic device comprises:

4. A visual inspection method as claimed in claim 3, wherein said determining the number of pixels required for said visual contrast sensitivity target in accordance with the size of individual screen pixels of said screen resolution comprises:

5. A visual inspection method according to claim 2 or claim 3, wherein displaying the visual contrast sensitivity optotype in the inspection frame on the touch-sensitive display screen of the electronic device comprises:

obtaining an actual observation distance of an observer;

6. The visual inspection method of claim 2, wherein the viewing channel of the viewer comprises a left eye viewing channel and a right eye viewing channel, the visual contrast sensitivity targets comprise a left eye target and a right eye target, the inspection frame comprises a left inspection frame with the left eye target and a right inspection frame with the right eye target, and the left eye viewing channel is opposite to the left inspection frame, and the right eye viewing channel is opposite to the right inspection frame;

7. The visual inspection method according to claim 2, wherein the touch-sensitive display screen includes the inspection frame and an operable area for the subject to determine the direction of the visual contrast sensitivity target, the operable area being around the visual contrast sensitivity target, and an operation space being present between the operable area and the test window;

8. The visual inspection method of claim 7, wherein the inspection frame and the operable area are located in a visible area of the touch display screen of the electronic device, the inspection frame is white in color, the visual contrast sensitivity optotype in the inspection frame is black in color, and the operable area is white in color.

9. The visual inspection method of claim 1, wherein displaying the visual optotype within the inspection frame within the touch-sensitive display screen of the electronic device comprises:

10. The visual inspection method of claim 9, wherein displaying the visual optotype within the inspection frame within the touch-sensitive display screen of the electronic device comprises:

11. The visual inspection method of claim 10, wherein said determining the number of pixels required for said visual optotype based on the size of individual screen pixels of said screen resolution comprises:

12. The visual inspection method according to claim 9 or 10, wherein displaying the visual optotype located in the inspection frame in the touch-sensitive display screen of the electronic device comprises:

Obtaining an actual observation distance of an observer;

13. The visual inspection method of claim 9, wherein the viewing channel of the viewer comprises a left eye viewing channel and a right eye viewing channel, the visual target comprises a left eye target and a right eye target, the inspection frame comprises a left inspection frame with the left eye target and a right inspection frame with the right eye target, and the left eye viewing channel is opposite to the left inspection frame, and the right eye viewing channel is opposite to the right inspection frame;

14. The visual inspection method of claim 9, wherein the touch-sensitive display screen includes the inspection frame and an operable area for the subject to determine the direction of the vision target, the operable area being around the vision target with an operating space between the operable area and the test window;

15. The visual inspection method of claim 14, wherein the inspection frame and the operable area are located in a visible area of the touch-sensitive display screen of the electronic device, the inspection frame is white in color, the visual optotype in the inspection frame is black in color, and the operable area is white in color.

16. The utility model provides a vision detection device, its characterized in that is applied to electronic equipment, electronic equipment sets up in the installing support that is used for the viewer of vision detection, the viewer is including being used for the observation window of testee, with the observation window just and the test window that the interval set up, and be located the observation passageway that forms between observation window and the test window, just, the installing support is close to the test window sets up, the vision detection method includes:

the processor is used for acquiring the pupil distance of the tested person;

the touch control display screen is used for displaying a visual target positioned in the detection frame under the condition that the pupil distance regulated by the observer is consistent with the pupil distance of the tested person, and the visual target is opposite to the test window and the observation channel; the touch display screen comprises the detection frame and an operable area for the testee to judge the direction of the visual target, wherein the operable area is positioned around the visual target, and an operation space exists between the operable area and the test window; the opening directions of the visual targets displayed by the touch display screen are upward, downward, leftward and rightward respectively, the opening directions are randomly displayed, and the targets in the same direction cannot continuously appear; in the touch-control display screen of electronic equipment, show the vision optotype that is located in the detection frame, include: randomly displaying visual contrast sensitivity optotypes corresponding to the preset proportion of each reduced contrast in a touchable screen of the electronic equipment according to the preset proportion of each reduced contrast of the visual contrast sensitivity so as to finish visual contrast sensitivity detection corresponding to the contrast of at least five levels of preset proportions; or randomly displaying the vision optotype in the touch display screen of the electronic equipment according to the sizes of different vision optotypes; and randomly displaying the vision optotype in different sizes of the vision optotype in a touch display screen of the electronic equipment;

The processor is further used for detecting the visual function of the tested person based on the visual optotype; the detecting of the visual function of the subject based on the visual optotype includes: acquiring an operation direction of user touch operation on the visual target based on the visual target; judging whether the operation direction is the correct sighting target direction or not by sensing the operation direction of the user touch operation of the tested person so as to determine to reduce the sighting target size and continue the test or terminate the test; if the direction of the visual target is judged to be continuously wrong for a preset number of times, ending the detection of the visual function corresponding to the eyes of the detected person; the detection of the visual function comprises detection of visual contrast sensitivity and visual testing; the predetermined number of times includes 2 times.

17. The visual inspection apparatus of claim 16, wherein the touch-sensitive display screen is specifically configured to display a visual contrast sensitivity target located in the inspection frame, the visual contrast sensitivity target facing the inspection window and the observation channel, when the pupillary distance adjusted by the observer coincides with the pupillary distance of the subject;

18. The visual inspection apparatus of claim 17, wherein the processor comprises a read system data sub-module for obtaining a screen resolution of the touch-controllable display of an electronic device;

19. The visual inspection apparatus of claim 18, wherein the optotype determining module is specifically configured to obtain the number of pixels required for the visual contrast sensitivity optotype by taking an integer of a ratio of the size of the visual contrast sensitivity optotype to the size of the single screen pixel according to the size of the visual contrast sensitivity optotype.

20. The visual inspection apparatus of claim 17 or 18, wherein the processor comprises a viewer data reading sub-module for obtaining an actual viewing distance of the viewer;

21. The visual inspection apparatus of claim 17, wherein the viewing channel of the viewer comprises a left eye viewing channel and a right eye viewing channel, the visual contrast sensitivity targets comprise a left eye target and a right eye target, the inspection frame comprises a left inspection frame with a left eye target and a right inspection frame with a right eye target, and the left eye viewing channel is opposite the left inspection frame and the right eye viewing channel is opposite the right inspection frame;

The processor is specifically further configured to:

22. The visual inspection apparatus of claim 17, wherein said inspection frame includes an operable area for the subject to determine the direction of said visual contrast sensitivity target, said operable area being located around said visual contrast sensitivity target with an operating space between said operable area and said test window;

23. The visual inspection apparatus of claim 16, wherein the touch-sensitive display screen is specifically configured to display an optotype located in the inspection frame, the optotype facing the test window and the observation channel, when a pupillary distance of the observer coincides with a pupillary distance of the subject;

24. The visual inspection apparatus of claim 23, wherein the processor comprises a read system data sub-module for obtaining a screen resolution of the touch-sensitive display of an electronic device;

25. The visual inspection apparatus of claim 24, wherein the optotype determining module is specifically configured to take an integer from a ratio of the size of the optotype to the size of the single screen pixel according to the size of the optotype, to obtain the number of pixels required for the optotype.

26. The visual inspection apparatus of claim 23 or 24, wherein the processor comprises a viewer data reading sub-module for obtaining an actual viewing distance of the viewer;

27. The visual inspection apparatus of claim 23, wherein the viewing channel of the viewer comprises a left eye viewing channel and a right eye viewing channel, the visual target comprises a left eye target and a right eye target, the inspection frame comprises a left inspection frame with a left eye target and a right inspection frame with a right eye target, and the left eye viewing channel is opposite the left inspection frame and the right eye viewing channel is opposite the right inspection frame;

The processor is specifically further configured to:

28. The visual inspection apparatus of claim 23, wherein said inspection frame includes an operable area for the subject to determine the direction of said visual target, said operable area being located around said visual target with an operating space between said operable area and said test window;

29. An electronic device comprising a visual inspection apparatus as claimed in any one of claims 16 to 28.

30. A visual inspection system comprising a viewer for visual inspection and the electronic device of claim 29 disposed within a mounting bracket of the viewer;

the observer is configured to adjust, when the processor of the electronic device obtains the pupillary distance of the person under test, according to the pupillary distance, the pupillary distance adjusted by the observer to be consistent with the pupillary distance of the person under test, so that the touch display screen displays a visual target located in the detection frame when the pupillary distance adjusted by the observer is consistent with the pupillary distance of the person under test, and the processor is further configured to perform vision detection of the person under test based on the visual target.

31. The visual inspection system of claim 30, wherein the mounting bracket comprises an adjustable frame, the adjustable frame being coupled to one side of the test window, the electronic device being clamped within the adjustable frame, the adjustable frame adjusting the clamping space for adapting to different sized electronic devices.

32. The visual inspection system of claim 31, wherein the adjustable frame comprises two opposite side telescoping frame mounting ends and two side clamping fixed ends connected to the telescoping frame mounting ends, the telescoping frame mounting ends being connected to one side of the test window, the clamping fixed ends being in abutment with the electronic device.

33. The visual inspection system of claim 31, wherein the adjustable frame comprises two opposite fixed connection ends and a plurality of movable contact ends connected with the fixed connection ends, the fixed connection ends are connected to one side of the test window, the movable contact ends are contacted with the electronic device, and the movable contact ends are staggered and slidingly connected with each other.

34. A computer-readable storage medium, having stored thereon a program which, when executed by a processor, implements the visual inspection method according to any one of claims 1-15.