Automatic contact type intraocular pressure measuring method and related equipment

Abstract

The invention provides an automatic contact type intraocular pressure measurement method and related equipment, and relates to the technical field of medical treatment, and the method comprises the steps: obtaining an eyeball image of a detected object, and determining the cornea center position of the detected object according to the eyeball image; controlling a measuring head to be in contact with eyeballs of the detected object based on the cornea center position and performing cornea flattening operation; in the cornea flattening operation, the flattening depth of the detection head is obtained in real time, and the diameter of a flattening circle formed by the contact of the detection head and the cornea is calculated in real time based on the flattening depth; when the diameter of the flattening circle reaches a preset diameter threshold value, a current pressure value is obtained; and calculating the intraocular pressure value of the detected object according to the current pressure value. According to the invention, automatic contact type intraocular pressure measurement can be realized.

Description

Technical Field

[0001] The present application relates to the field of medical technology, and in particular to an automatic contact intraocular pressure measurement method and related equipment. Background Art

[0002] Glaucoma is a progressive optic neuropathy that is irreversible and incurable. Early diagnosis and early treatment have become the most economical and effective means to prevent rapid blindness. Among them, increased intraocular pressure is one of the most important risk factors for glaucoma and is also an important indicator for the current clinical diagnosis of glaucoma. However, the current early diagnosis rate of glaucoma is only about 20%.

[0003] In the related art, the contact applanation tonometer is recognized as the standard for intraocular pressure measurement due to its good measurement accuracy. It calculates the intraocular pressure by applying a specific pressure to the cornea and observing the applanation area. However, the existing contact applanation tonometer has the following technical defects: First, the measurement process requires the patient's ocular surface to be stained with sodium fluorescein and observed under a slit lamp to see whether the applanation area reaches the preset value. This observation method is highly dependent on the doctor's subjective experience and judgment. Secondly, the contact position of the measuring head and the cornea and the applanation process require manual control by the operator, which not only increases the difficulty of operation, but also easily leads to measurement errors due to human factors. Summary of the invention

[0004] The main purpose of the embodiments of the present application is to propose an automatic contact intraocular pressure measurement method and related equipment, which can realize automated contact intraocular pressure measurement and reduce dependence on operator experience.

[0005] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application proposes an automatic contact intraocular pressure measurement method, the method is used for an automatic contact intraocular pressure measurement device, the automatic contact intraocular pressure measurement device includes a measurement head, and the method includes:

[0006] Acquire an eyeball image of the subject to be examined, and determine the center position of the cornea of ​​the subject to be examined according to the eyeball image;

[0007] Based on the corneal center position, the measuring head is controlled to contact with the eyeball of the subject and perform corneal applanation operation;

[0008] In the corneal applanation operation, the applanation depth of the probe head is acquired in real time, and the applanation circle diameter formed by the contact between the probe head and the cornea is calculated in real time based on the applanation depth;

[0009] When the flattened circle diameter reaches a preset diameter threshold, obtaining a current pressure value;

[0010] The intraocular pressure value of the subject is calculated according to the current pressure value.

[0011] In some embodiments, the step of acquiring the applanation depth of the probe head in real time and calculating the applanation circle diameter formed by the contact between the probe head and the cornea in real time based on the applanation depth includes:

[0012] Acquiring, by means of the driving module, the applanation depth of the cornea applanation operation performed by the detection head;

[0013] The applanation circle diameter is calculated according to a preset corneal curvature radius and the applanation depth.

[0014] In some embodiments, the step of calculating the intraocular pressure value of the subject according to the current pressure value includes:

[0015] Calculating the flattened circle area based on the flattened circle diameter;

[0016] The ratio of the current pressure value to the area of ​​the flattened circle is calculated, and the ratio is used as the intraocular pressure value.

[0017] In some embodiments, the automatic contact intraocular pressure measurement device further includes a positioning module, the automatic contact intraocular pressure measurement device further includes a positioning module and an LED light source, the LED light source is arranged behind the measuring head, and the step of acquiring the eyeball image of the subject includes:

[0018] Turning on the LED light source to guide the subject to look at the LED light source;

[0019] The eyeball image is collected by the camera.

[0020] In some embodiments, controlling the measuring head to contact the eyeball of the subject and performing corneal applanation operation based on the corneal center position includes:

[0021] Controlling the measuring head to move to the center of the cornea;

[0022] Controlling the measuring head to move a first preset distance in a direction away from the eyeball of the subject;

[0023] The measuring head is controlled to move a second preset distance at a preset applanation rate in a direction close to the eyeball of the subject.

[0024] In some embodiments, the automatic contact intraocular pressure measurement device further includes a display module. After calculating the intraocular pressure value of the subject according to the current pressure value, the method further includes:

[0025] The applanation depth, the current pressure value and the intraocular pressure value are displayed on the display module.

[0026] A second aspect of the embodiment of the present application provides an automatic contact intraocular pressure measurement device, the automatic contact intraocular pressure measurement device is used to implement the automatic contact intraocular pressure measurement method as described in the first aspect, the automatic contact intraocular pressure measurement device includes a data processing module, a positioning module, a measurement module and a driving module;

[0027] The positioning module is used to obtain an eyeball image of the subject;

[0028] The measuring module comprises a measuring head and a pressure sensor, wherein the measuring head is used to contact the cornea of ​​the subject and perform the corneal applanation operation, and the pressure sensor is used to obtain a current pressure value;

[0029] The driving module is used to drive the measuring head to move to the center of the cornea and perform the corneal applanation operation under the control of the data processing module.

[0030] The data processing module is used to determine the corneal center position of the subject according to the eyeball image, and is also used to calculate the applanation circle diameter in real time based on the applanation depth, and calculate the intraocular pressure value according to the current pressure value.

[0031] In some embodiments, the diameter of the surface of the measuring head in contact with the cornea is 4 mm, and the measuring head is connected to the driving module via a mechanical connector.

[0032] In some embodiments, the driving module includes:

[0033] A first displacement motor is used to drive the measuring head to move horizontally in the left and right directions relative to the eyeball of the subject;

[0034] a second displacement motor, used for driving the measuring head to move in an up-and-down direction relative to the eyeball of the subject;

[0035] a third displacement motor, used for driving the measuring head to move in the front-rear direction relative to the eyeball of the subject;

[0036] The fourth displacement motor is used to drive the measuring head to contact the eyeball of the subject and perform corneal applanation operation.

[0037] In some embodiments, a first limiter is provided in the first driving direction of the first displacement motor, a second limiter is provided in the second driving direction of the second displacement motor, and a third limiter is provided in the third driving direction of the third displacement motor, which are respectively used to limit the moving range of the measuring head in the corresponding directions, and a fourth limiter is provided in the fourth driving direction of the fourth displacement motor, and the fourth limiter is used to limit the flattening depth of the measuring head to not exceed a preset depth threshold.

[0038] In some embodiments, the device further comprises:

[0039] A mechanical handle is mechanically connected to the measuring head and is used to control the measuring head to quickly move away from the inspected object in an emergency.

[0040] In some embodiments, the device further comprises:

[0041] A chin rest, used to adjust the upper and lower positions of the head of the subject;

[0042] A forehead support is used to fix the front and back position of the subject's head.

[0043] In some embodiments, the device further comprises:

[0044] A control panel, the control panel comprising control buttons, a control knob and a chin rest button; wherein the control buttons are used to control the movement of the measuring head in the up and down and left and right directions, the control knob is used to control the movement of the measuring head in the front and back directions, and the chin rest button is used to control the up and down movement of the chin rest.

[0045] To achieve the above-mentioned purpose, the third aspect of an embodiment of the present application proposes an electronic device, which includes a memory and a processor, the memory stores a computer program, and the processor implements the feeding control method as described in the first aspect when executing the computer program.

[0046] To achieve the above-mentioned purpose, the fourth aspect of an embodiment of the present application proposes a storage medium, which is a computer-readable storage medium, and the storage medium stores a computer program. When the computer program is executed by a processor, the feeding control method described in the first aspect is implemented.

[0047] The automatic contact intraocular pressure measurement method and related equipment proposed in this application have the following beneficial effects:

[0048] The present application measures intraocular pressure by acquiring the image of the eyeball of the subject and automatically determining the center position of the cornea, and calculating the applanation circle diameter in real time. There is no need to perform sodium fluorescein staining on the patient's ocular surface, nor is there any need to observe the applanation area under a slit lamp, which overcomes the technical defect in the prior art that the observation method is highly dependent on the subjective experience and judgment of the doctor; at the same time, the contact position of the measuring head and the cornea and the applanation process are automatically controlled by the system, which overcomes the technical defect in the prior art that the operator needs to manually control and cause measurement errors. The automatic contact intraocular pressure measurement method and related equipment proposed in the present application realize automated contact intraocular pressure measurement.

[0049] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or understood by practicing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a schematic diagram of the process of the automatic contact intraocular pressure measurement method provided in the embodiment of the present application;

[0051] Figure 2 is another schematic flow chart of the automatic contact intraocular pressure measurement method provided in an embodiment of the present application;

[0052] Figure 3 is another schematic flow chart of the automatic contact intraocular pressure measurement method provided in an embodiment of the present application;

[0053] Figure 4 is another schematic flow chart of the automatic contact intraocular pressure measurement method provided in an embodiment of the present application;

[0054] Figure 5 is another schematic flow chart of the automatic contact intraocular pressure measurement method provided in an embodiment of the present application;

[0055] Figure 6 is a structural schematic diagram of an automatic contact intraocular pressure measurement device provided in an embodiment of the present application;

[0056] Figure 7 is a schematic diagram of the structure of the measurement module provided in the embodiment of the present application;

[0057] Figure 8 is a schematic diagram of the structure of a driving module provided in an embodiment of the present application;

[0058] Fig. 9 is another structural schematic diagram of a driving module provided in an embodiment of the present application;

[0059] Fig.10 is another structural schematic diagram of the automatic contact intraocular pressure measurement device provided in an embodiment of the present application;

[0060] Fig.11 is a schematic diagram of the structure of a control panel provided in an embodiment of the present application;

[0061] Fig.12 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0065] According to the World Vision Report released by the World Health Organization in 2019, the number of glaucoma patients worldwide will increase from 69.2 million in 2016 to 95.4 million in 2030. Glaucoma is irreversible and incurable. Early diagnosis and treatment are the most cost-effective and the only way to avoid rapid blindness. However, the current early diagnosis rate of glaucoma is only about 20%.

[0066] Increased intraocular pressure is one of the most common features of glaucoma. The contact applanation tonometer is the most commonly used intraocular pressure measuring device in clinical practice and is also the gold standard for intraocular pressure measurement. The contact applanation tonometer uses the Imbert-Fick law to calculate intraocular pressure. Specifically, when pressure is applied to the cornea, the intraocular pressure calculation formula is:

[0067]

[0068] Where IOP is intraocular pressure, F is the pressure applied to the cornea, s is the surface tension of the eyeball, b is the corneal resistance, and A is the applanation area. According to the principle of the existing contact applanation tonometer, when the measuring head applanates the cornea to a contact circle diameter of 3.06 mm (the applanation circle area is 7.35 square millimeters), the surface tension and corneal resistance cancel each other out, and Imbert-Fick's Law can be simplified as:

[0069]

[0070] Based on the above principle, the measurement process of the existing contact applanation tonometer is as follows: Since there is no scale on the front surface of the measuring head, a prism with a spacing of 3.06 mm is embedded inside the measuring head. The doctor first stains the patient's ocular surface with sodium fluorescein, and then uses the prism measuring head to applanate the cornea. The shape and position of the two semicircular arcs formed by sodium fluorescein are observed through the slit lamp to determine whether the pressure application site and strength are appropriate. When the applanation circle diameter just reaches 3.06 mm (that is, when measured correctly), the two semicircular arcs should present the following shape: complete shape, symmetrical around the connection point, the arc width is approximately 1 / 10 of the arc diameter, and the inner sides of the two arcs are tangent. At this time, the pressure applied by the mechanical connecting rod is read to calculate the intraocular pressure.

[0071] However, the existing contact applanation tonometer has the following technical defects: First, the above-mentioned pressure application and observation process is highly dependent on the doctor's feel and subjective experience. The doctor needs to manually push the tonometer to the center of the patient's cornea and judge whether the flattening is appropriate by observation. Since the amount of dye will affect the width of the semicircular arc, that is, the size of the corneal surface tension, when the measuring head flattens the cornea until the diameter of the contact circular surface reaches 3.06 mm, the corneal surface tension may not be able to offset the corneal resistance, resulting in measurement errors; and there is a fuzzy area at the edge of the arc under the slit lamp, so it is difficult to accurately judge whether the condition of inner tangency is achieved, and it is difficult to ensure that the flattening circle diameter just reaches 3.06 mm, which further leads to more measurement errors. Secondly, since the entire process depends on the doctor's experience and feel, the operation process is often long, resulting in prolonged compression time on the patient's eyeball, which is easy to cause discomfort to the patient and even side effects. These technical defects make it difficult for the existing contact applanation tonometer to be used on a large scale and cannot meet the clinical needs of many glaucoma patients and potential high-risk groups.

[0072] In view of the above problems, the present invention proposes an automatic contact intraocular pressure measurement method and related equipment, which obtains the eyeball image of the subject and automatically determines the corneal center position, calculates the applanation circle diameter in real time to measure intraocular pressure, and does not require sodium fluorescein staining of the patient's ocular surface, nor does it require observation of the applanation circle diameter under a slit lamp, thus overcoming the technical defect in the prior art that the observation method is highly dependent on the doctor's subjective experience and judgment; at the same time, the contact position and applanation process of the measuring head and the cornea are automatically controlled by the system, thus overcoming the technical defect in the prior art that the operator needs to manually control and cause measurement errors, and greatly shortens the contact time between the measuring head and the patient's cornea, reducing discomfort and side effects. The automatic contact intraocular pressure measurement method and related equipment proposed in this application realize automated contact intraocular pressure measurement.

[0073] The automatic contact intraocular pressure measurement method and related equipment provided in the embodiments of the present application are specifically illustrated through the following embodiments. First, the automatic contact intraocular pressure measurement method in the embodiments of the present application is described.

[0074] The automatic contact intraocular pressure measurement method in the embodiments of the present application can be illustrated by the following embodiments.

[0075] Figure 1 is an optional flow chart of the automatic contact intraocular pressure measurement method provided in the embodiment of the present application, the method is used for the automatic contact intraocular pressure measurement device, the intraocular pressure measurement system includes a measurement head, Figure 1 The method may include but is not limited to steps 101 to 105.

[0076] Step 101: Acquire an eyeball image of a subject, and determine the center position of the cornea of ​​the subject according to the eyeball image.

[0077] Step 102: Based on the corneal center position, the measuring head is controlled to contact the eyeball of the subject and perform corneal applanation operation.

[0078] Step 103, during the corneal applanation operation, the applanation depth of the probe head is acquired in real time, and the diameter of the applanation circle formed by the contact between the probe head and the cornea is calculated in real time based on the applanation depth.

[0079] Step 104, when the flattened circle diameter reaches a preset diameter threshold, the current pressure value is obtained.

[0080] Step 105, calculating the intraocular pressure value of the subject according to the current pressure value.

[0081] Steps 101 to 105 shown in the embodiment of the present application obtain the eyeball image of the subject and automatically determine the corneal center position, calculate the applanation circle diameter in real time to measure intraocular pressure, without the need to perform sodium fluorescein staining on the patient's ocular surface, and without the need to observe the applanation area under a slit lamp, thereby overcoming the technical defect in the prior art that the observation method is highly dependent on the subjective experience and judgment of the doctor; at the same time, the contact position and applanation process of the measuring head and the cornea are automatically controlled by the system, thereby overcoming the technical defect in the prior art that the operator needs to manually control and cause measurement errors, and greatly shortening the contact time between the measuring head and the patient's cornea, reducing discomfort and side effects. The automatic contact intraocular pressure measurement method and related equipment proposed in the present application realize automated contact intraocular pressure measurement.

[0082] Steps 101 to 105 are explained in detail below.

[0083] In step 101 of some embodiments, an image of the eyeball of the subject is obtained. Specifically, a frontal image containing the cornea and sclera of the patient can be obtained, wherein the cornea is a transparent tissue covering the front of the eyeball, and the sclera is the white outer tissue of the eyeball. The center position of the cornea of ​​the subject can be determined based on the eyeball image. Since the boundary between the cornea and the sclera (i.e., the corneoscleral limbus) is morphologically presented as a regular circular boundary, the circular boundary can be identified by image processing, and the geometric center of the circular boundary is determined as the center position of the cornea.

[0084] See also Figure 2 In some embodiments, the automatic contact intraocular pressure measurement device further includes a positioning module, the positioning module includes a positioning module and an LED light source, the LED light source is arranged behind the measuring head, and step 101 may include but is not limited to steps 201 to 202.

[0085] Step 201, turning on the LED light source to guide the subject to look at the LED light source.

[0086] Step 202: Capture an eyeball image through a camera.

[0087] In step 201 of some embodiments, the eyeball position of the subject is ensured to remain stable by guiding the subject to look at the LED light source. Specifically, when the subject aligns his eyes with the measuring device, the operator guides the subject to look at the LED light source. The LED light source is arranged behind the measuring head as the object of the subject's gaze. By providing a fixed gaze point, the subject's eyeball can be kept in a relatively stable position, reducing the influence of eyeball rotation on subsequent measurements.

[0088] In step 202 of some embodiments, an eyeball image is captured by a camera. Specifically, when the subject is looking at the LED light source, the eyeball is in a relatively fixed position, and the camera can obtain a stable frontal image of the eyeball. Since the position of the subject's eyeball is relatively fixed, the boundary between the cornea and the sclera in the acquired eyeball image presents a clear boundary feature, which is conducive to the subsequent accurate identification of the center position of the cornea. The field of view of the camera covers the entire eyeball area, ensuring that the image information of the cornea and sclera can be fully captured.

[0089] Through steps 201 to 202, the embodiment of the present application provides a fixation target through an LED light source, so that the eyeball of the subject remains stable, and the eyeball image is automatically collected through a camera. This method not only overcomes the technical defect of the prior art that the operator needs to manually control the position of the measuring head, but also improves the stability of the eyeball position during the measurement process by providing a fixed fixation point, thereby ensuring the accuracy of intraocular pressure measurement.

[0090] In step 102 of some embodiments, the measuring head is controlled to contact the eyeball of the subject based on the corneal center position and corneal applanation operation is performed. Specifically, after the corneal center position is obtained, the measuring head is controlled to move to the position so that the central axis of the measuring head coincides with the corneal center position. When the measuring head contacts the corneal surface, the applanation operation is performed at a specific rate and mode with the contact point as the starting coordinate. The movement direction of the measuring head should be perpendicular to the corneal surface to ensure uniform force during the applanation process.

[0091] See also Figure 3 In some embodiments, step 102 may include but is not limited to steps 301 to 303 .

[0092] Step 301, controlling the measuring head to move to the center of the cornea.

[0093] Step 302: Control the measuring head to move a first preset distance in a direction away from the eyeball of the subject.

[0094] Step 303: Control the measuring head to move toward the eyeball of the subject and for a second preset distance at a preset applanation rate.

[0095] In step 301 of some embodiments, the measuring head is controlled to move to the center of the cornea. Specifically, based on the coordinates of the center of the cornea obtained in the previous steps, the measuring head is controlled to move in the horizontal and vertical directions and in the front-back direction by the driving module until the central axis of the measuring head coincides with the center of the cornea and fits with the cornea. This precise positioning ensures the accuracy of the subsequent applanation operation.

[0096] In step 302 of some embodiments, the measuring head is controlled to move a first preset distance in a direction away from the eyeball of the subject. Specifically, after the corneal center is aligned, the measuring head is controlled by the third displacement motor to retreat to a safe distance. The purpose of this step is to ensure that the subsequent applanation operation can move at a uniform speed. The first preset distance can be set to 1 mm, which can ensure safety without excessively extending the measurement time.

[0097] In step 303 of some embodiments, the measuring head is controlled to move toward the eyeball of the subject at a preset applanation rate for a second preset distance. Specifically, the measuring head is controlled to move forward at a constant rate. The second preset distance can be set to 1.5 mm (i.e., 1 mm back + a preset applanation distance threshold of 0.5 mm), which can ensure that the measuring head is in full contact with the cornea and completes the applanation operation.

[0098] Through steps 301 to 303, the embodiment of the present application achieves accurate positioning and stable contact of the measuring head, overcomes the technical defect of the prior art that manual operation easily causes sudden contact between the measuring head and the eyeball, and improves the comfort and safety of the measurement process. This automated control method not only standardizes the measurement process, but also significantly reduces the difficulty of operation.

[0099] In step 103 of some embodiments, during the corneal applanation operation, the applanation depth of the probe head is acquired in real time, and the applanation circle diameter formed by the contact between the probe head and the cornea is calculated in real time based on the applanation depth. Specifically, the applanation depth δ refers to the vertical distance that the measuring head presses into the corneal surface. Since the corneal surface is approximately a spherical surface, its radius of curvature R is about 7.8 mm on average. When the measuring head applanates the cornea, when the pressing depth is δ, according to the principle of spherical geometry, the applanation circle diameter corresponding to different applanation depths can be calculated in real time, thereby monitoring the progress of the applanation process.

[0100] See also Figure 4 In some embodiments, step 203 may include but is not limited to steps 401 to 403.

[0101] Step 401, obtaining the applanation depth of the corneal applanation operation performed by the detection head.

[0102] Step 402, obtaining a preset corneal curvature radius.

[0103] Step 403, calculating the applanation circle diameter according to the corneal curvature radius and the applanation depth.

[0104] In step 401 of some embodiments, the applanation depth of the corneal applanation operation is obtained by acquiring the probe head. Specifically, the applanation depth refers to the distance that the probe head is pressed in the direction perpendicular to the corneal surface. During the applanation process, after the probe head contacts the cornea, the cornea is applanated at a specific rate and pattern with the contact point as the starting coordinate, and the applanation depth continues to increase. By acquiring the displacement of the probe head, the change of the applanation depth can be monitored in real time. In this embodiment, the applanation depth is controlled within the range of 0 to 0.5 mm to avoid damage to the cornea caused by excessive applanation depth.

[0105] In step 402 of some embodiments, a preset corneal curvature radius is obtained. Specifically, the corneal curvature radius refers to the curvature of the corneal surface, which reflects the geometric characteristics of the corneal surface. Since the corneal surface is approximately spherical, its curvature radius is relatively stable in the normal population, generally in the range of 7.2 to 8.4 mm. In this embodiment, the preset corneal curvature radius is 7.8 mm, which is an average value obtained from clinical statistics and is consistent with the current general contact applanation tonometer. Presetting this parameter can simplify the measurement process, and there is no need to measure the corneal curvature of each subject individually.

[0106] In step 403 of some embodiments, the applanation circle diameter is calculated based on the corneal curvature radius and the applanation depth. Specifically, when the probe applanates the cornea, a circular applanation area is formed on the corneal surface. The diameter of the applanation area can be calculated by the corneal curvature radius R and the applanation depth δ, and the calculation formula is:

[0107]

[0108] This formula is derived based on the principle of spherical geometry, where R is the preset corneal curvature radius and δ is the applanation depth obtained in real time. This formula can be used to calculate the applanation circle diameter in real time, providing a basis for subsequent judgment on whether the preset threshold has been reached.

[0109] Through steps 401 to 403, the embodiment of the present application does not need to determine whether the applanation circle diameter reaches the preset value through sodium fluorescein staining and slit lamp observation, but instead performs real-time calculation through the applanation depth of the detection head combined with the corneal curvature radius, thereby overcoming the technical defect of the prior art that the measurement process relies on the subjective experience of the doctor, improving the accuracy of the applanation circle diameter judgment, and thus ensuring the reliability of the intraocular pressure measurement results.

[0110] In step 104 of some embodiments, when the applanation circle diameter reaches a preset diameter threshold, the current pressure value is obtained. Specifically, the preset diameter threshold is set to 3.06 millimeters. The determination of this numerical value is based on the measurement principle of the Goldmann contact applanation tonometer. When the applanation circle diameter reaches 3.06 millimeters (corresponding to an applanation area of ​​7.35 square millimeters), the surface tension of the cornea and its elastic restoring force just offset each other. The pressure value measured in this state can most accurately reflect the size of the intraocular pressure, and there is no need to consider the influence of the physical properties of the cornea itself. Therefore, when the applanation circle diameter calculated in real time reaches the threshold, the pressure value at this time is recorded.

[0111] In step 105 of some embodiments, the intraocular pressure value of the subject is calculated based on the current pressure value. Specifically, the calculation of the intraocular pressure value (IOP) needs to consider factors such as the force (F), the surface tension of the eyeball (s), the corneal resistance (b), and the applanation area (A). When the applanation circle diameter reaches 3.06 mm, the surface tension and the corneal resistance cancel each other out (i.e., s=b), and the actual intraocular pressure value of the subject can be obtained by substituting the parameters into the calculation formula.

[0112] See also Figure 5 In some embodiments, step 105 may include but is not limited to steps 501 to 502.

[0113] Step 501, calculating the flattened circle area based on the flattened circle diameter.

[0114] Step 502, calculate the ratio of the current pressure value and the area of ​​the flattened circle, and use the ratio as the intraocular pressure value.

[0115] In step 501 of some embodiments, the applanation circle area is calculated based on the applanation circle diameter. Specifically, when the probe applanates the cornea, the applanation area formed on the corneal surface is approximately circular. According to the circular area calculation formula, the applanation circle area A is calculated as follows:

[0116]

[0117] Where D is the flattened circle diameter calculated in step 403. When the flattened circle diameter reaches the preset 3.06 mm, the corresponding flattened circle area is 7.35 square millimeters.

[0118] In step 502 of some embodiments, the ratio of the current pressure value and the applanation circle area is calculated, and the ratio is used as the intraocular pressure value. Specifically, according to the Imbert-Fick law, when the applanation circle diameter reaches 3.06 mm, the eyeball surface tension and corneal resistance cancel each other out, and the intraocular pressure value is equal to the ratio of the current pressure value F to the applanation circle area A, that is,

[0119]

[0120] Wherein F is the pressure on the probe head at this time, and A is the area of ​​the flattened circle calculated in step 501. Substituting these parameters into the formula, the intraocular pressure value of the subject can be obtained.

[0121] Through steps 501 to 502, the embodiment of the present application obtains the current pressure value through the pressure sensor, and automatically calculates the intraocular pressure value in combination with the calculated applanation circle area, thereby overcoming the technical defect of the prior art that the operator needs to manually control the applanation process which leads to measurement errors, improves the accuracy and repeatability of intraocular pressure measurement, and greatly shortens the contact time between the measuring head and the patient's cornea, reducing discomfort and side effects.

[0122] In some embodiments, the automatic contact intraocular pressure measurement device also includes a display module. After step 105, the applanation depth, current pressure value and intraocular pressure value are displayed on the display module. Specifically, the display module can simultaneously display the parameters in the applanation process and the final measurement results. Among them, the display of the applanation depth reflects the actual distance that the measuring head is pressed into the corneal surface, the current pressure value shows the pressure exerted on the measuring head, and the intraocular pressure value is the final result calculated based on the pressure value and the applanation area. By intuitively presenting these data on the display module, it is convenient for the operator and the subject to understand the measurement status and results in a timely manner.

[0123] Through the setting of the display module, the embodiment of the present application realizes the visual display of the measurement process and results, which is not only convenient for the operator to judge whether the measurement is successfully completed, but also can be used for recording and analyzing the measurement data, thereby improving the convenience of using the device. This automated data display method overcomes the inconvenience of the operator manually recording the measurement results in the prior art, and further improves the standardization and normalization level of intraocular pressure measurement.

[0124] Next, the automatic contact type intraocular pressure measuring device in the embodiment of the present application is described.

[0125] Figure 6 It is a structural schematic diagram of an automatic contact intraocular pressure measurement device 1000 provided in an embodiment of the present application. The automatic contact intraocular pressure measurement device 1000 is used to implement the above-mentioned automatic contact intraocular pressure measurement method, including: a data processing module (not shown in the figure), a positioning module (1100), a measurement module 1200 and a driving module (not shown in the figure).

[0126] A positioning module 1100 is used to obtain an eyeball image of the subject;

[0127] The measuring module 1200 includes a measuring head and a pressure sensor, wherein the measuring head is used to contact the cornea of ​​the subject and perform corneal applanation operation, and the pressure sensor is used to obtain a current pressure value;

[0128] In some embodiments, the measuring module 1200 is mounted on the device via a bracket, and the measuring head is located at the end, which is used to contact the cornea of ​​the subject and perform corneal applanation. The pressure sensor is integrated inside the measuring head to obtain the pressure value of the measuring head in real time, that is, the current pressure value.

[0129] The driving module is used to drive the measuring head to move to the center of the cornea and perform corneal applanation under the control of the data processing module. It is installed inside the device and connected to the measuring module 1200. Under the control of the data processing module, the driving module can drive the measuring head to move in the horizontal and vertical directions, so that the measuring head is accurately positioned at the center of the cornea and the corneal applanation operation is completed.

[0130] The data processing module is used to determine the center position of the cornea of ​​the subject according to the eyeball image, and is also used to calculate the applanation circle diameter in real time based on the applanation depth, and calculate the intraocular pressure value according to the current pressure value. Figure 6 The data processing module processes the eyeball image obtained by the positioning module 1100 to determine the center position of the cornea; on the other hand, it calculates the applanation depth and the applanation circle diameter according to the data of the pressure sensor, and finally calculates the intraocular pressure value.

[0131] Through the cooperation of the above modules, the automatic contact intraocular pressure measurement device 1000 provided in the embodiment of the present application can realize the automated operation of the entire process of intraocular pressure measurement, overcome the technical defect of the prior art that the measurement process relies on manual operation, and improve the accuracy and reliability of intraocular pressure measurement.

[0132] like Figure 7 As shown, in some embodiments, the measurement module 1200 includes a measurement head 1210 , a pressure sensor 1220 , and an LED light source 1230 .

[0133] Specifically, the end face of the measuring head 1210 is the contact surface that contacts the eyeball of the subject, and the diameter of the contact surface is designed to be 4 mm, that is, the diameter of the contact surface between the measuring head and the eyeball of the subject is 0-4 mm, which varies according to the applanation depth. This size design can ensure that the applanation area reaches the preset diameter of 3.06 mm, and will not cause measurement errors due to excessive contact area. The measuring head 1210 is connected to the driving module through a mechanical connector, and can achieve precise movement driven by the driving module.

[0134] In some embodiments, the positioning module 1100 includes a camera 1110. Figure 7 As shown, the camera 1110 is set at a suitable position so that its field of view can cover the eye area of ​​the subject. When the subject points his eyes to the measuring device, the camera 1110 can sense the presence of the subject and trigger the subsequent automatic control process.

[0135] In some embodiments, the LED light source 1230 is disposed behind the measuring head 1210. This arrangement has a dual role: on the one hand, the LED light source 1230 serves as the gaze target of the subject, and by providing a fixed gaze point, the eyeball of the subject can be kept in a relatively stable position, reducing the influence of eyeball movement on the measurement result; on the other hand, when the subject is looking at the LED light source 1230, his eyeball will naturally maintain a suitable distance and angle with the measuring head 1210, which is conducive to the accuracy of subsequent measurements.

[0136] In some embodiments, the fourth displacement motor 1340 is disposed behind the measuring module 1200, connected to the measuring module 1200 through a connecting rod, and is used to drive the measuring head 1210 of the measuring module 1200 to perform corneal applanation movement at a predetermined rate. A fourth stopper is provided in the fourth driving direction (i.e., the direction of corneal applanation) of the fourth displacement motor 1200, which is used to limit the applanation depth of the measuring head 1210 to not exceed a preset depth threshold, such as 0.5 mm.

[0137] Through the above-mentioned structural design, the automatic contact intraocular pressure measurement device provided in the embodiment of the present application can improve the stability of the eyeball position during the measurement process by setting the gaze point while ensuring the measurement accuracy, thereby further improving the reliability of intraocular pressure measurement.

[0138] In some embodiments, Figure 8 As shown, the driving module 1300 also includes three displacement motors, which are respectively used to realize the motion control of the measuring head in three directions. Specifically:

[0139] In some embodiments, the first displacement motor 1310 is mounted on the horizontal movement mechanism of the driving module 1300 to drive the measuring head to move horizontally in the left and right directions relative to the subject's eyeball. This movement enables the measuring head to adjust its position in the horizontal plane to align with the center of the cornea.

[0140] In some embodiments, the second displacement motor 1320 is mounted on the vertical movement mechanism of the driving module 1300 to drive the measuring head to move up and down relative to the subject's eyeball. This movement enables the measuring head to adjust its height in the vertical direction to adapt to the eyeball position of different subjects.

[0141] In some embodiments, the third displacement motor 1330 is installed on the front-rear movement mechanism of the driving module 1300 to drive the measuring head to move in the front-rear direction relative to the eyeball of the subject. This movement enables the measuring head to gradually approach the eyeball and achieve applanation operation.

[0142] Through the coordinated work of three displacement motors, the drive module 1300 provided in the embodiment of the present application realizes the precise positioning and control of the measuring head in three-dimensional space, overcomes the technical defects in the prior art that require the operator to manually control the position of the measuring head and the applanation process, and improves the degree of automation and accuracy of intraocular pressure measurement.

[0143] In some embodiments, Fig. 9 As shown, limiters are respectively provided in the driving directions of the three displacement motors to ensure the movement safety of the measuring head. Specifically:

[0144] In some embodiments, the first stopper 1340 is disposed in the horizontal left and right driving direction of the first displacement motor 1310. Fig. 9 As shown in the partial enlarged view on the right, the first limiter 1340 limits the horizontal movement range of the measuring head through a mechanical structure to prevent the measuring head from moving beyond the safety area.

[0145] In some embodiments, the second stopper 1350 is disposed in the up and down driving direction of the second displacement motor 1320. Fig. 9As shown in the upper right partial enlarged view, the second limiter 1350 limits the moving range of the measuring head in the vertical direction, ensuring that the measuring head always remains within a suitable height range.

[0146] In some embodiments, the third stopper 1360 is disposed in the front-rear driving direction of the third displacement motor 1330. Fig. 9 As shown in the lower right partial enlarged view, the third limiter 1360 limits the movement range of the measuring head in the front-to-back direction.

[0147] By setting four stoppers, the driving module provided in the embodiment of the present application can achieve accurate positioning and control while ensuring the safety of the measurement process, which is difficult to ensure with existing manual operations. In particular, the precise control of the applanation depth by the fourth stopper ensures the accuracy of the measurement and avoids possible medical risks.

[0148] like Fig.10 As shown, in some embodiments, the automatic contact intraocular pressure measurement device 1000 provided in the embodiment of the present application further includes:

[0149] In some embodiments, Fig.10 As shown, the automatic contact intraocular pressure measurement device 1000 further includes a mechanical handle 1400, a chin rest 1500, a forehead rest 1900 and a display screen 1600, which further improve the safety and convenience of the device. Specifically:

[0150] In some embodiments, the mechanical handle 1400 is disposed on the device body and is mechanically connected to the measuring head. Fig.10 As shown, the mechanical handle 1400 is designed as a knob for easy operation. When an accident or emergency occurs, the operator can quickly move the measuring head away from the eyeball of the subject to be inspected by turning the mechanical handle 1400 to ensure the safety of the subject. This mechanical emergency control method is fast and reliable.

[0151] In some embodiments, the display screen 1600 is designed as a touch screen. Fig.10 As shown, it can be installed on the device. The display screen 1600 is not only used to display the measurement parameters such as the applanation depth, the current pressure value and the intraocular pressure value in real time, but also provides a touch interaction function. Specifically, the operator can use the touch screen to:

[0152] Enter the basic information of the examinee, such as name, age, gender, etc.

[0153] Select the measurement mode, such as single measurement or continuous measurement;

[0154] Adjust measurement parameters, such as setting the applanation diameter threshold;

[0155] View measurement history for easy data tracking and analysis;

[0156] Export measurement data and support data storage and transmission.

[0157] Through the interactive function of the touch screen, the automatic contact intraocular pressure measurement device provided in the embodiment of the present application not only realizes the automation of the measurement process, but also provides a convenient human-computer interaction interface, so that the operator can more conveniently control the equipment and manage the measurement data, further improving the intelligence level and ease of use of the equipment.

[0158] In some embodiments, Fig.11 As shown, the control panel 1700 of the automatic contact intraocular pressure measurement device 1000 integrates multiple operation controls for realizing manual control of various components of the device. Specifically:

[0159] In some embodiments, the control panel 1700 includes a cross-shaped control button 1710. Fig.11 As shown, the control button 1710 is designed as a four-way button of up, down, left, and right, which is used to manually control the position adjustment of the measuring head in the horizontal plane. The operator can control the measuring head to make precise position fine adjustment by pressing the button in the corresponding direction to achieve precise alignment with the center of the cornea.

[0160] In some embodiments, the control panel 1700 includes a control knob 1720. Fig.11 As shown, the control knob 1720 is rotatable and is used to control the movement of the measuring head in the front-back direction. By rotating the knob clockwise or counterclockwise, the measuring head can be controlled to gradually approach or move away from the subject's eyeball, thereby achieving precise control of the applanation depth.

[0161] In some embodiments, the control panel 1700 further includes a chin support button 1730. Fig.11 As shown, the chin rest button 1730 is used to control the lifting and lowering of the chin rest to meet the needs of examinees of different heights. By adjusting the height of the chin rest, the examinee can maintain a comfortable posture while ensuring that the eyeball is in a suitable measurement position.

[0162] Although the automatic contact intraocular pressure measurement device of the embodiment of the present application has an automatic measurement function, by setting these manual control buttons, manual intervention and precise adjustment can be achieved when necessary, further improving the flexibility and adaptability of the device. This design combining automatic and manual operation not only ensures the accuracy of the measurement, but also improves the reliability and safety of the device.

[0163] In some embodiments, the automatic contact intraocular pressure measurement device 1000 provided in the embodiment of the present application also includes a power module. Specifically, the power module is used to provide power to various electrical components of the device, including displacement motors, LED light sources, cameras, display screens, etc. A transformer is integrated inside the power module, which can convert an external 220V AC power supply into the voltage required inside the device. Through voltage conversion, the normal power supply of various components of the device is ensured, and the damage that high voltage may cause to electronic components is avoided.

[0164] See also Fig.12 , Fig.12 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0165] The processor 1201 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0166] The memory 1202 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1202 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 1202, and the processor 1201 calls and executes the method of the waveguide side wall angle of the embodiment of the present application;

[0167] Input / output interface 1203, used to implement information input and output;

[0168] The communication interface 1204 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WI FI, Bluetooth, etc.);

[0169] A bus 1205 that transmits information between various components of the device (e.g., the processor 1201, the memory 1202, the input / output interface 1203, and the communication interface 1204);

[0170] The processor 1201 , the memory 1202 , the input / output interface 1203 and the communication interface 1204 are connected to each other in communication within the device via the bus 1205 .

[0171] An embodiment of the present application further provides a computer-readable storage medium storing a computer program, which implements the above-mentioned method for the waveguide side wall angle when executed by a processor.

[0172] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0173] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0174] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0175] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0176] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0177] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0178] It should be understood that in the present application, "at least one (item)" and "several" refer to one or more, and "plurality" refers to two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0179] In the several embodiments provided in the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are merely schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0180] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0181] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0182] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0183] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. An automatic contact intraocular pressure measurement method, characterized in that: The method is used for an automatic contact type intraocular pressure measuring device, the automatic contact type intraocular pressure measuring device comprises a measuring head, and the method comprises: Acquire an eyeball image of the subject to be examined, and determine the center position of the cornea of ​​the subject to be examined based on the eyeball image; Based on the corneal center position, the measuring head is controlled to contact with the eyeball of the subject and perform corneal applanation operation; In the corneal applanation operation, the applanation depth of the probe head is acquired in real time, and the applanation circle diameter formed by the contact between the probe head and the cornea is calculated in real time based on the applanation depth; When the flattened circle diameter reaches a preset diameter threshold, obtaining a current pressure value; The intraocular pressure value of the subject is calculated according to the current pressure value.

2. The automatic contact intraocular pressure measurement method according to claim 1, characterized in that: The step of acquiring the applanation depth of the probe head in real time and calculating the applanation circle diameter formed by the contact between the probe head and the cornea in real time based on the applanation depth comprises: Acquiring the applanation depth of the cornea applanation operation performed by the detection head; The applanation circle diameter is calculated according to a preset corneal curvature radius and the applanation depth.

3. The automatic contact intraocular pressure measurement method according to claim 1, characterized in that: The step of calculating the intraocular pressure value of the subject according to the current pressure value includes: Calculating the flattened circle area based on the flattened circle diameter; The ratio of the current pressure value to the area of ​​the flattened circle is calculated, and the ratio is used as the intraocular pressure value.

4. The automatic contact intraocular pressure measurement method according to claim 1, characterized in that: The automatic contact intraocular pressure measurement device further includes a positioning module and an LED light source, wherein the LED light source is arranged behind the measuring head, and the step of obtaining an eyeball image of the subject includes: Turning on the LED light source to guide the subject to look at the LED light source; The eyeball image is collected by the positioning module.

5. The automatic contact intraocular pressure measurement method according to claim 1, characterized in that: The method of controlling the measuring head to contact the eyeball of the subject and perform corneal applanation operation based on the corneal center position includes: Controlling the measuring head to move to the center of the cornea; Controlling the measuring head to move a first preset distance in a direction away from the eyeball of the subject; The measuring head is controlled to move a second preset distance at a preset applanation rate in a direction close to the eyeball of the subject.

6. The automatic contact intraocular pressure measurement method according to claim 1, characterized in that: The automatic contact intraocular pressure measuring device further includes a display module. After calculating the intraocular pressure value of the subject according to the current pressure value, the method further includes: The applanation depth, the current pressure value and the intraocular pressure value are displayed on the display module.

7. An automatic contact intraocular pressure measurement device, characterized in that: The automatic contact intraocular pressure measurement device is used to implement the automatic contact intraocular pressure measurement method according to any one of claims 1 to 6, and the automatic contact intraocular pressure measurement device includes a data processing module, a positioning module, a measurement module and a driving module; The positioning module is used to obtain an eyeball image of the subject; The measuring module comprises a measuring head and a pressure sensor, wherein the measuring head is used to contact the cornea of ​​the subject and perform the corneal applanation operation, and the pressure sensor is used to obtain a current pressure value; The driving module is used to drive the measuring head to move to the center of the cornea and perform the corneal applanation operation under the control of the data processing module. The data processing module is used to determine the corneal center position of the subject according to the eyeball image, and is also used to calculate the applanation circle diameter in real time based on the applanation depth, and calculate the intraocular pressure value according to the current pressure value.

8. The automatic contact intraocular pressure measuring device according to claim 7, characterized in that: The diameter of the surface of the measuring head in contact with the cornea is 4 mm, and the measuring head is connected to the driving module via a mechanical connector.

9. The automatic contact intraocular pressure measuring device according to claim 7, characterized in that: The driving module comprises: A first displacement motor is used to drive the measuring head to move horizontally in the left and right directions relative to the eyeball of the subject; a second displacement motor, used for driving the measuring head to move in an up-and-down direction relative to the eyeball of the subject; a third displacement motor, used for driving the measuring head to move in the front-rear direction relative to the eyeball of the subject; The fourth displacement motor is used to drive the measuring head to contact the eyeball of the subject and perform corneal applanation operation.

10. The automatic contact intraocular pressure measuring device according to claim 9, characterized in that: A first limiter is arranged in the first driving direction of the first displacement motor, a second limiter is arranged in the second driving direction of the second displacement motor, and a third limiter is arranged in the third driving direction of the third displacement motor, which are respectively used to limit the moving range of the measuring head in the corresponding directions, and a fourth limiter is arranged in the fourth driving direction of the fourth displacement motor, and the fourth limiter is used to limit the flattening depth of the measuring head to not exceed a preset depth threshold.

11. The automatic contact intraocular pressure measuring device according to claim 7, characterized in that: The device also includes: A mechanical handle is mechanically connected to the measuring head and is used to control the measuring head to quickly move away from the inspected object in an emergency.

12. The automatic contact intraocular pressure measuring device according to claim 7, characterized in that: The device also includes: A chin rest, used to adjust the upper and lower positions of the head of the subject; A forehead support is used to fix the front and back position of the subject's head.

13. The automatic contact intraocular pressure measuring device according to claim 12, characterized in that: The device also includes: A control panel, the control panel comprising control buttons, a control knob and a chin rest button; wherein the control buttons are used to control the movement of the measuring head in the up and down and left and right directions, the control knob is used to control the movement of the measuring head in the front and back directions, and the chin rest button is used to control the up and down movement of the chin rest.

14. An electronic device, characterized in that: include: A memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the automatic contact intraocular pressure measurement method according to any one of claims 1 to 6 is implemented.

15. A computer-readable storage medium, characterized in that: The storage medium stores a program, and the program is executed by a processor to implement the automatic contact intraocular pressure measurement method according to any one of claims 1 to 6.

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