Intraocular pressure measuring method and intraocular pressure measuring system

Abstract

The invention relates to an intraocular pressure measuring method and an intraocular pressure measuring system.The intraocular pressure measuring method comprises the steps that whether a corneal contact lens provided with a magnetic component deviates from an intraocular pressure measuring position or not is judged according to detected magnetic field characteristics detected in an intraocular pressure measuring area, and the intraocular pressure measuring position is located in the intraocular pressure measuring area; under the condition that the corneal contact lens deviates from the intraocular pressure measurement position, position correction is conducted on the corneal contact lens based on the magnetic field characteristics, so that the corneal contact lens is located at the intraocular pressure measurement position; and finally, the intraocular pressure is measured through the cornea contact lens at the intraocular pressure measuring position. Position detection and position correction of the corneal contact lens can be realized, so that the corneal contact lens is positioned at an accurate intraocular pressure measurement position before intraocular pressure measurement, and the success rate of intraocular pressure measurement is improved.

Description

Technical Field

[0001] The present application relates to the technical field of intraocular pressure measurement, and in particular to an intraocular pressure measurement method and an intraocular pressure measurement system. Background Art

[0002] Glaucoma is the second leading cause of blindness in the world. Long-term intraocular pressure monitoring plays an important role in early detection of glaucoma, postoperative glaucoma disease control, and drug control of intraocular pressure. It is a necessary means to detect and treat glaucoma. Current methods of intraocular pressure measurement include applanation, reflection, and sensor. Among them, applanation tonometry is to flatten the eyeball to a certain area, and calculate the ratio of the force of flattening the eyeball to the area of ​​the flattened part to obtain the intraocular pressure of the eyeball.

[0003] In some related intraocular pressure measurement methods, intraocular pressure is usually measured indirectly by changes in corneal shape, such as indirectly measuring intraocular pressure by measuring corneal deformation through a flexible variable resistor, and indirectly measuring intraocular pressure by the inductance value of an induction coil attached to the cornea.

[0004] In the above-mentioned method of measuring intraocular pressure, when the corneal contact lens is not perpendicular to the magnetic field generated by the magnetic field generating module, after the magnetic field is applied to the magnetized corneal contact lens, the contact lens is easily displaced or even falls off, thereby causing the intraocular pressure measurement to fail.

[0005] There is currently no effective solution to the problem that when measuring intraocular pressure in related technologies, the corneal contact lens may shift or fall off due to an external magnetic field, thereby reducing the success rate of intraocular pressure measurement. Summary of the invention

[0006] In this embodiment, an intraocular pressure measurement method and an intraocular pressure measurement system are provided to solve the problem of low success rate of intraocular pressure measurement in related technologies.

[0007] In a first aspect, a method for measuring intraocular pressure is provided in this embodiment, comprising:

[0008] Determining whether the corneal contact lens provided with a magnetic component deviates from an intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area;

[0009] In the case where the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position;

[0010] Intraocular pressure measurement is performed with the contact lens in the intraocular pressure measurement position.

[0011] In some embodiments, the magnetic field characteristics include the average magnetic field strength and the magnetic field uniformity, and judging whether the corneal contact lens provided with the magnetic component deviates from the intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area includes:

[0012] When the detected average intensity of the magnetic field in the intraocular pressure measurement area is within a preset intensity range, and the detected uniformity of the magnetic field in the intraocular pressure measurement area is within a preset uniformity range, determining that the corneal contact lens provided with the magnetic component is in the intraocular pressure measurement position;

[0013] When the average intensity of the magnetic field is within a preset intensity range and the uniformity of the magnetic field is outside a preset uniformity range, it is determined that the corneal contact lens deviates from the intraocular pressure measurement position.

[0014] In some embodiments, when the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position, including:

[0015] In the case where the corneal contact lens deviates from the intraocular pressure measurement position, a first generation parameter for generating a first external magnetic field is calculated according to the magnetic field characteristics; the first external magnetic field is used to generate an attractive force on the magnetic component, so that the magnetic component drives the corneal contact lens to move to the intraocular pressure measurement position under the action of the attractive force;

[0016] Based on the first generation parameter, the first external magnetic field is applied to the magnetic component.

[0017] In some embodiments, the intraocular pressure measurement through the corneal contact lens in the intraocular pressure measurement position includes:

[0018] generating a second external magnetic field according to a second generation parameter, wherein the second external magnetic field is used to generate thrust on the magnetic component;

[0019] Detecting frequency change information of the sensing coil of the corneal contact lens; wherein the magnetic component is arranged in a preset central area of ​​the corneal contact lens; and the sensing coil is arranged inside the magnetic component;

[0020] When it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

[0021] In some embodiments, the detecting of frequency change information of the sensing coil of the corneal contact lens comprises:

[0022] Detecting a first resonant frequency of a sensing coil of the contact lens and a second resonant frequency of a reference coil of the contact lens; the reference coil is disposed at a preset edge region of the contact lens;

[0023] Determining frequency change information of the sensing coil of the corneal contact lens based on the difference between the first resonant frequency and the second resonant frequency;

[0024] When it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, determining a first intraocular pressure measurement value of the intraocular pressure measurement object based on the second generated parameter includes:

[0025] When the difference between the first resonant frequency and the second resonant frequency is a preset reference difference, determining that the corneal contact lens is in a preset deformation state;

[0026] When it is determined that the corneal contact lens is in a preset deformation state, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

[0027] In some embodiments, the method further comprises:

[0028] The resonant frequency of the reference coil is detected, and the reference difference value is determined according to first mapping information preset between the resonant frequency of the reference coil and the reference difference value.

[0029] In some embodiments, determining a first intraocular pressure measurement value of an intraocular pressure measurement object based on the second generated parameter includes:

[0030] Determine an intraocular pressure value corresponding to the second generation parameter according to preset second mapping information;

[0031] The intraocular pressure value corresponding to the second generation parameter is determined as the first intraocular pressure measurement value of the intraocular pressure measurement object.

[0032] In some of the embodiments, the preset second mapping information is established in advance based on the correspondence between the second generation parameter and the thrust generated by the second external magnetic field, and the correspondence between the thrust and the intraocular pressure value.

[0033] In some embodiments, the method further comprises:

[0034] During the process of applying the second external magnetic field to the magnetic component and after applying the second external magnetic field, obtaining a damping change characteristic of the sensing coil;

[0035] Calculating the inherent deformation characteristic parameter of the intraocular pressure measurement object and a second intraocular pressure measurement value according to the damping change characteristic;

[0036] A target intraocular pressure measurement value is obtained based on the deformation characteristic parameter, the first intraocular pressure measurement value, and the second intraocular pressure measurement value.

[0037] In a second aspect, an intraocular pressure measurement system is provided in this embodiment, and the intraocular pressure measurement system applies the intraocular pressure measurement method described in the first aspect above.

[0038] In some embodiments, the intraocular pressure measurement system includes a corneal contact lens and a wearable detector; the corneal contact lens includes a magnetic component, a sensing coil and a reference coil; the wearable detector includes a reading coil, a magnetic field sensor and a magnetic field generating circuit;

[0039] The magnetic component is arranged in the central area of ​​the corneal contact lens of a preset size; the sensing coil is arranged inside the magnetic component; and the reference coil is arranged in the preset edge area of ​​the corneal contact lens;

[0040] The frequency detection range of the reading coil covers the sensing coil and the reference coil; the magnetic field detection range of the magnetic field sensor covers the magnetic component; and the magnetic field range of the magnetic field generating circuit covers the magnetic component.

[0041] In some of the embodiments, the magnetic component includes magnetic powder and a rigid magnetic powder skeleton; the magnetic powder is disposed in a closed area formed by the magnetic powder skeleton.

[0042] Compared with the related art, the intraocular pressure measurement method and intraocular pressure measurement system provided in this embodiment determine whether the corneal contact lens provided with a magnetic component deviates from the intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area; in the case where the corneal contact lens deviates from the intraocular pressure measurement position, the corneal contact lens is positionally corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position; finally, intraocular pressure measurement is performed by the corneal contact lens in the intraocular pressure measurement position. It can realize the position detection and position correction of the corneal contact lens so that the corneal contact lens is in the accurate intraocular pressure measurement position before intraocular pressure measurement, thereby improving the success rate of intraocular pressure measurement.

[0043] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0045] Figure 1 is an application scenario diagram of the intraocular pressure measurement method of this embodiment;

[0046] Figure 2 is a flow chart of the intraocular pressure measurement method of this embodiment;

[0047] Figure 3 is a flow chart of a method for correcting the position of a contact lens according to a preferred embodiment;

[0048] Figure 4 is a flow chart of a method for measuring intraocular pressure in a preferred embodiment;

[0049] Figure 5 is a schematic structural diagram of a corneal contact lens applied to this embodiment;

[0050] Figure 6 Schematic diagram of the structure of a wearable detector used in this embodiment. DETAILED DESCRIPTION

[0051] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0052] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0053] The method embodiment provided in this embodiment can be executed in a control unit of a circuit. Figure 1 : is an application scenario diagram of the intraocular pressure measurement method of this embodiment. Figure 1 As shown, when measuring intraocular pressure, the contact lens 101 is accurately fitted with the user's eyeball, wherein the edge of the contact lens 101 is fitted with the edge of the cornea of ​​the eyeball, and the center of the contact lens 101 is the center of the cornea of ​​the eyeball. The contact lens 101 is located within the detection range of the detector 102, so that the detector 102 measures intraocular pressure through the contact lens 101. Specifically, after the user wears the contact lens 101 and the detector 102, the detector 102 determines whether the contact lens 101 provided with a magnetic component deviates from the intraocular pressure measurement position according to the magnetic field characteristics detected in the intraocular pressure measurement area, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area. In the case of confirming that the contact lens 101 deviates from the intraocular pressure measurement position, the contact lens 101 is positionally corrected based on the magnetic field characteristics so that the contact lens 101 is in the intraocular pressure measurement position; finally, the detector 102 cooperates with the contact lens 101 in the intraocular pressure measurement position to achieve intraocular pressure measurement. The specific form of the detector 102 is not limited, and preferably, it can be a wearable detector in the shape of a frame.

[0054] In this embodiment, a method for measuring intraocular pressure is provided. Figure 2 is a flow chart of the intraocular pressure measurement method of this embodiment, such as Figure 2 As shown, the process includes the following steps:

[0055] Step S210, judging whether the corneal contact lens provided with a magnetic component deviates from the intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area.

[0056] Before starting the intraocular pressure measurement, this embodiment first senses the magnetic field in the intraocular pressure measurement area to determine the magnetic field characteristics, and then judges whether the corneal contact lens is located at a suitable intraocular pressure measurement position based on the magnetic field characteristics. The above-mentioned intraocular pressure measurement position can specifically be the center of the cornea of ​​the eyeball. When the center of the corneal contact lens is aligned with the center of the cornea of ​​the eyeball, the corneal contact lens is considered to be located at a suitable intraocular pressure measurement position. Specifically, the magnetic field strength and magnetic field uniformity in the sensing area can be detected by a magnetic field sensor arranged near the corneal contact lens to obtain the above-mentioned magnetic field characteristics, and then judge whether the corneal contact lens is located at the intraocular pressure measurement position.

[0057] It can be understood that the intraocular pressure measurement area can be an area that can be sensed by a magnetic field sensor for detecting magnetic field characteristics, and in order to determine whether the corneal contact lens deviates from the intraocular pressure measurement position, the magnetic field sensor can be arranged near the intraocular pressure measurement position, and the sensing area covers the intraocular pressure measurement position. When the corneal contact lens deviates from the intraocular pressure measurement position, the corneal contact lens will be too close or too far from the magnetic field sensor, and the corneal contact lens is provided with a magnetic component, so that the magnetic field characteristics detected by the magnetic field sensor in the sensing area fail to reach the preset magnetic field characteristic range. For example, if the corneal contact lens is not in the sensing area of ​​the magnetic field sensor, or the corneal contact lens is too close to the magnetic field sensor, the average intensity of the magnetic field detected by the magnetic field sensor will not be within the preset intensity range. For another example, if the corneal contact lens is not in the correct intraocular pressure measurement position, the magnetic field uniformity detected by the magnetic field sensor will also exceed the preset uniformity range. Therefore, this embodiment can determine whether the corneal contact lens deviates from the intraocular pressure measurement position based on the magnetic field characteristics detected in the intraocular pressure measurement area. Before measuring intraocular pressure, this embodiment first determines whether the corneal contact lens is in the intraocular pressure measurement position, which can avoid measuring intraocular pressure when the corneal contact lens deviates from the intraocular pressure measurement position, thereby improving the success rate of intraocular pressure measurement and the accuracy of the measurement results.

[0058] Step S220: When the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position.

[0059] Since the contact lens is provided with a magnetic component, a magnetic field can be applied to the magnetic component based on the above-mentioned magnetic field characteristics, so that the magnetic component drives the contact lens to move to the intraocular pressure measurement position under the influence of the magnetic field. Exemplarily, the magnetic field can be adjusted to exert an attractive force on the magnetic component, so that the contact lens is displaced due to the influence of the magnetic field's attractive force on its magnetic component. Furthermore, the parameters that need to be adjusted for the magnetic field can be calculated based on the above-mentioned magnetic field characteristics, so that the attraction generated by the generated magnetic field on the magnetic component can accurately move the contact lens to the intraocular pressure measurement position.

[0060] In addition, it is also possible to determine whether the contact lens is worn correctly based on the above magnetic field characteristics. For example, if the magnetic field strength in the intraocular pressure measurement area is too high or too low, it means that the contact lens itself is not within the appropriate magnetic field range. This may be caused by the user not wearing the contact lens or not wearing the contact lens correctly. Therefore, a prompt message for the user to wear the contact lens correctly can be generated.

[0061] In this embodiment, when it is confirmed that the corneal contact lens deviates from the intraocular pressure measurement position, the corneal contact lens is corrected based on the magnetic field characteristics to make the corneal contact lens in the intraocular pressure measurement position, so that the corneal contact lens can be accurately corrected, so that when the intraocular pressure is measured, it can be ensured that the corneal contact lens is in the correct measurement position. Combined with the above step S210, this embodiment can realize the position detection and correction of the corneal contact lens before the intraocular pressure measurement. In the related art, since it is impossible to detect whether the corneal contact lens is in the correct measurement position, it is impossible to avoid the contact lens from being displaced and falling off due to the influence of the magnetic field due to not being in the correct measurement position, resulting in the failure of intraocular pressure measurement. This embodiment can overcome the above problems in the related art, ensure that the corneal contact lens is in the correct intraocular pressure measurement position, so that it can be perpendicular to the magnetic field generated by the magnetic field generation module during the intraocular pressure measurement process, thereby avoiding the corneal contact lens from being displaced and falling off during the measurement process, and improving the success rate of intraocular pressure measurement.

[0062] Step S230, measuring intraocular pressure through the corneal contact lens in the intraocular pressure measurement position.

[0063] After completing the position correction of the contact lens, intraocular pressure measurement can be achieved through the cooperation between the detector worn by the user and the contact lens. Specifically, a thrust can be applied to the magnetic component of the contact lens through an external magnetic field, so that the contact lens is deformed due to the thrust of the magnetic component, until a preset deformation state in which the intraocular pressure value can be calculated is reached. Since the contact lens is fitted with the intraocular pressure measurement object, that is, the eyeball, when the contact lens is deformed, the eyeball to which it is fitted will also be affected to deform accordingly. Finally, based on the magnetic field generation parameters required when the contact lens is deformed to a preset state by the external magnetic field, the intraocular pressure measurement value is determined. Among them, the second mapping information between different intraocular pressure values ​​and different magnetic field generation parameters can be established in advance.

[0064] There are many methods for measuring intraocular pressure based on corneal contact lenses. For example, based on the resistive strain sensing circuit embedded in the corneal contact lens, the deformation of the corneal contact lens caused by the influence of the external magnetic field on the magnetic component is converted into a specific signal to determine whether the corneal contact lens has reached a preset deformation state, thereby calculating the corresponding intraocular pressure value. Alternatively, an LC coil is integrated on the corneal contact lens, and a component capable of reading the oscillation frequency of the LC coil is set outside the corneal contact lens, and the deformation of the corneal contact lens under the action of the magnetic field is judged based on the frequency read from the outside, and then it is determined whether the corneal contact lens is in a preset deformation state to achieve intraocular pressure measurement. In particular, in order to more accurately detect the deformation state of the corneal contact lens, a sensing coil can be set at the center of the corneal contact lens, and a reference coil can be set at the edge of the corneal contact lens. By detecting the difference in the resonant frequency of the above two coils during the deformation process of the corneal contact lens, it is determined whether the corneal contact lens has reached a preset deformation state. For example, if the above frequency difference reaches a preset reference difference, it is considered that the corneal contact lens has reached a preset deformation state. At this time, the intraocular pressure measurement value of the corneal contact lens can be determined based on the generation parameters of the external magnetic field.

[0065] In addition, the reference difference can be adjusted based on the different detection distances of the above-mentioned contact lens. For example, when a wearable detector is used to detect the resonant frequencies of the sensing coil and the reference coil on the contact lens, the resonant frequencies of the reference coils read are different due to the different distances between the wearable detector and the contact lens. Therefore, the corresponding relationship between the resonant frequencies of multiple groups of reference coils and the reference difference can be pre-set in this embodiment, that is, different resonant frequencies of the reference coils correspond to different reference differences. This embodiment obtains the corresponding reference difference based on the resonant frequency of the reference coils read. When the frequency difference reaches the reference difference, it is determined that the contact lens is in a preset deformation state. Therefore, this embodiment can determine the change in the detection distance relative to the contact lens when detecting the contact lens, and compensate for the influence of the change on the magnetic field, thereby improving the accuracy of the detection of the deformation state of the contact lens.

[0066] In addition, taking into account the different effects of Young's modulus such as corneal hardness of the individual user on the intraocular pressure value, this embodiment can also calculate the parameters related to the hardness inherent in the cornea itself based on the damping change characteristics of the sensing coil when measuring the intraocular pressure, and correct the measured intraocular pressure value based on the above-mentioned inherent hardness related parameters, thereby improving the accuracy of the intraocular pressure measurement, and eliminating the need for initial correction of the intraocular pressure for the individual user.

[0067] In the above steps S210 to S230, based on the detected magnetic field characteristics in the intraocular pressure measurement area, it is determined whether the corneal contact lens provided with a magnetic component deviates from the intraocular pressure measurement position, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area; in the case where the corneal contact lens deviates from the intraocular pressure measurement position, the corneal contact lens is positionally corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position; finally, intraocular pressure measurement is performed by the corneal contact lens in the intraocular pressure measurement position. It can realize the position detection and position correction of the corneal contact lens, so that the corneal contact lens is in an accurate intraocular pressure measurement position before intraocular pressure measurement, thereby improving the success rate of intraocular pressure measurement. In addition, the detection and correction function of the position of the corneal contact lens possessed by this embodiment can facilitate the user to wear and use it freely for a long time, and avoid errors in intraocular pressure measurement caused by the user's rapid eye movement period in the sleep state.

[0068] Further, in one embodiment, based on the above step S210, judging whether the corneal contact lens provided with a magnetic component deviates from the intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area may specifically include:

[0069] When the detected average strength of the magnetic field in the intraocular pressure measurement area is within a preset strength range, and the detected uniformity of the magnetic field in the intraocular pressure measurement area is within a preset uniformity range, it is determined that the corneal contact lens provided with a magnetic component is in the intraocular pressure measurement position; when the average strength of the magnetic field is within the preset strength range, and the uniformity of the magnetic field is outside the preset uniformity range, it is determined that the corneal contact lens deviates from the intraocular pressure measurement position.

[0070] Among them, the magnetic field average intensity and magnetic field uniformity can be detected by a magnetic field sensor. For example, a magnetic field sensor circuit can be set on the wearable detector, and before the intraocular pressure is measured, the magnetic field sensor circuit is started to detect the magnetic field average intensity and magnetic field uniformity. When the magnetic field average intensity is within the preset intensity range, it indicates that the user has worn a corneal contact lens. At this time, by detecting the magnetic field uniformity, it can be determined whether the worn corneal contact lens is in the intraocular pressure measurement position. In addition, if the magnetic field average intensity is outside the preset intensity range, it indicates that the user does not wear the corneal contact lens correctly, or does not wear the above-mentioned wearable detector correctly, so the user can be prompted to wear the above-mentioned device correctly. This embodiment detects the position of the corneal contact lens based on the magnetic field average intensity and magnetic field uniformity, so that the position of the corneal contact lens can be accurately verified before the intraocular pressure is measured, and it is convenient for the user to wear and use it freely for a long time, and avoid the error caused by the user's rapid eye movement period in the sleep state to the intraocular pressure measurement.

[0071] Additionally, in one embodiment, based on the above step S220, when the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position, which may specifically include:

[0072] When the corneal contact lens deviates from the intraocular pressure measurement position, the first generation parameters for generating the first external magnetic field are calculated according to the magnetic field characteristics; the first external magnetic field is used to generate an attractive force on the magnetic component, so that the magnetic component drives the corneal contact lens to move to the intraocular pressure measurement position under the action of the attractive force; based on the first generation parameters, the first external magnetic field is applied to the magnetic component.

[0073] Among them, when it is determined that the uniformity of the magnetic field is outside the preset uniformity range, the pulse high voltage required by the magnetic field generating circuit is calculated based on the average strength of the magnetic field, so that the magnetic field generating circuit generates a first external magnetic field that generates an attractive force on the magnetic component based on the pulse high voltage, so that the magnetic component drives the corneal contact lens to move to the intraocular pressure measurement position under the action of the attractive force. That is, the first generating parameter can be a pulse voltage for the magnetic field generating circuit to generate the first external magnetic field. The magnetic field generating circuit can be integrated into a wearable detector. When the wearable detector is closer to the corneal contact lens, the lower the reverse high voltage that needs to be generated is. When the wearable detector is farther from the corneal contact lens, the higher the reverse high voltage that needs to be generated is. Therefore, this embodiment is based on this embodiment, by calculating the first generating parameter for generating the first external magnetic field based on the magnetic field characteristics, so as to achieve accurate correction of the position of the corneal contact lens.

[0074] Additionally, in one embodiment, based on the above step S230, performing intraocular pressure measurement through a corneal contact lens in an intraocular pressure measurement position may specifically include:

[0075] A second external magnetic field is generated according to a second generation parameter, and the second external magnetic field is used to generate a thrust on the magnetic component; the frequency change information of the sensing coil of the corneal contact lens is detected; wherein the magnetic component is arranged in a preset central area of ​​the corneal contact lens; the sensing coil is arranged inside the magnetic component; when it is determined based on the frequency change information that the corneal contact lens is in a preset deformation state, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

[0076] The sensing coil may be specifically an inductor coil. Under the thrust of the second external magnetic field, the preset area at the center of the contact lens will first be deformed by the thrust. Exemplarily, the magnetic component may be arranged at 4 mm from the center to the periphery of the contact lens, and the sensing coil may be arranged inside the magnetic component. Based on this, a circuit for reading the resonant frequency of the sensing coil may be arranged at a fixed position. If the contact lens is deformed by the thrust, the distance of the sensing coil relative to the circuit may also change, and the resonant frequency read may also change. Thus, the present embodiment determines the deformation state of the contact lens based on the frequency change information of the sensing coil. When it is determined that the contact lens is in a preset deformation state based on the frequency change information, the first intraocular pressure measurement value of the intraocular pressure measurement object may be obtained. Exemplarily, the preset deformation state may be a certain degree of flattening state of the contact lens and the intraocular pressure measurement object under the thrust. The present embodiment does not specifically limit the preset deformation state.

[0077] Additionally, after determining that the contact lens reaches a preset deformation state, the intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter that generates the second external magnetic field at this time. The intraocular pressure measurement object can be an eyeball that needs to be measured for intraocular pressure. The second external magnetic field is generated by a magnetic field generating circuit, and the magnetic field generating circuit can generate a high-voltage pulse of 100 volts to 2000 volts. The second generation parameter can be the pulse voltage required for the magnetic field generating circuit to generate the second external magnetic field. The second mapping information between the above-mentioned second generation parameter and the intraocular pressure value can also be determined by pre-calibration.

[0078] In one embodiment, detecting the frequency change information of the sensing coil of the corneal contact lens includes: detecting the first resonant frequency of the sensing coil of the corneal contact lens, and the second resonant frequency of the reference coil of the corneal contact lens; the reference coil is set in a preset edge area of ​​the corneal contact lens; based on the difference between the first resonant frequency and the second resonant frequency, determining the frequency change information of the sensing coil of the corneal contact lens; when it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, determining the first intraocular pressure measurement value of the intraocular pressure measurement object based on the second generation parameter, including: when the difference between the first resonant frequency and the second resonant frequency is a preset reference difference, determining that the corneal contact lens is in a preset deformation state; when it is determined that the corneal contact lens is in a preset deformation state according to the difference between the first resonant frequency and the second resonant frequency, determining the first intraocular pressure measurement value of the intraocular pressure measurement object based on the second generation parameter.

[0079] The reference difference can be measured in advance and stored in the memory of the wearable detector. In addition, if the difference fails to reach the preset reference difference, the magnetic field strength of the second external magnetic field is adjusted, and the second external magnetic field is applied to the contact lens again until the difference reaches the preset reference difference. Based on the preset reference difference and the difference between the first resonant frequency and the second resonant frequency, this embodiment can accurately detect the deformation state of the contact lens.

[0080] Among them, the edge of the corneal contact lens, where it contacts the sclera, is least affected by the intraocular pressure and the external magnetic field. Therefore, an LC fixed resonant frequency circuit can be set in the preset edge area of ​​the corneal contact lens as a reference coil, and the resonant frequency of the reference coil is perceived as a fixed frequency. Therefore, the deformation state of the corneal contact lens can be judged based on the difference between the first resonant frequency read by the sensing coil and the second resonant frequency of the reference coil. That is, when the above difference reaches the preset reference difference, it can be determined that the corneal contact lens has reached the preset deformation state. In addition, after applying equal-amplitude transient high-voltage pulses to the magnetic field generation circuit multiple times, the top displacement of the center of the corneal contact lens will be pre-adjusted to achieve a displacement characteristic with good repeatability. At this time, the first resonant frequency of the sensing coil read is recorded.

[0081] In some related technologies, the resistance strain sensor is arranged at 0.5 mm to 3 mm from the edge of the corneal contact lens. Before long-range measurement, the resistance value after the eyeball is flattened will be calibrated first, and the electrical information corresponding to the resistance value will be stored as the object for subsequent judgment of whether the eyeball has reached the flattened state. Since the position where the above-mentioned resistance strain sensor is arranged is not in the part where the eyeball is directly flattened, the resistance strain sensor cannot directly reflect whether the eyeball has reached the preset deformation state. On the other hand, in the related technology, the deformation state of the corneal contact lens is detected based on the resistance strain sensor. In order to collect its strain signal, a signal acquisition circuit needs to be set up accordingly, and in order to transmit the signal, a chip such as Near Field Communication (NFC) needs to be set up, which also increases the cost and production difficulty of the corneal contact lens as a consumable. In response to the above problems, this embodiment determines the deformation state of the corneal contact lens based on the difference in resonant frequency between a reference coil in the edge area of ​​the corneal contact lens and a sensing coil located in the center area of ​​the corneal contact lens. On the one hand, it can achieve accurate detection of the deformation state. On the other hand, there is no need to additionally set up signal acquisition circuits, NFC chips, etc. required in related technologies, thereby reducing the manufacturing cost and difficulty of the corneal contact lens.

[0082] Furthermore, in one embodiment, the above intraocular pressure measurement method further includes:

[0083] The resonant frequency of the reference coil is detected, and the reference difference value is determined according to first mapping information preset between the resonant frequency of the reference coil and the reference difference value.

[0084] It should be noted that when reading the resonant frequency of the reference coil of the contact lens, when the distance between the reading circuit and the contact lens changes, the resonant frequency of the reference coil read will also change, and this change will affect the reference difference corresponding to the contact lens when it reaches the preset deformation state. For example, due to different users, the distance between the wearable detector and the contact lens is also different, resulting in different resonant frequencies of the reference coil read by the reading circuit on the wearable detector.

[0085] In view of the problem that the change of the wearing distance between the glasses carrying the magnetic field generating unit and the corneal contact lens with integrated magnetic powder pushed by the magnetic field on the magnetic field generating effect is not considered in the related art, the magnetic field force acting on the corneal contact lens changes greatly due to a slight change in the wearing distance, thereby causing a large measurement error. In order to consider the influence of the detection distance of the corneal contact lens on the final measurement result, the present embodiment determines the mapping information between the resonant frequency and the reference difference of different reference coils as the first mapping information in advance by measuring, and when the resonant frequency of the reference coil read changes, the new reference difference is determined based on the first mapping information, thereby realizing the detection of the deformation state. Therefore, the present embodiment can compensate for the final intraocular pressure measurement based on the change of the distance between the corneal contact lens and the detection device, thereby improving the accuracy of the intraocular pressure measurement, and can make the intraocular pressure measurement of the present embodiment adapt to different users, and the distance change between the wearable detector and the corneal contact lens caused by the user in different activity states. The present embodiment provides a distance detection and compensation function between the wearable detector and the corneal contact lens, which is convenient for adapting to different users and the same user's wearing and use in a long-term free activity scene.

[0086] Additionally, in one embodiment, determining a first intraocular pressure measurement value of the intraocular pressure measurement object based on the second generation parameter may include:

[0087] The intraocular pressure value corresponding to the second generation parameter is determined according to the preset second mapping information; the intraocular pressure value corresponding to the second generation parameter is determined as the first intraocular pressure measurement value of the intraocular pressure measurement object. By determining the intraocular pressure value corresponding to the second generation parameter from the pre-established second mapping information, the amount of calculation in the intraocular pressure measurement process can be simplified, and the convenience and efficiency of the intraocular pressure measurement can be improved.

[0088] Furthermore, in one embodiment, the preset second mapping information is established in advance based on the correspondence between the second generation parameter and the thrust generated by the second external magnetic field, and the correspondence between the thrust and the intraocular pressure value. Specifically, based on the correspondence between the second generation parameter and the thrust generated by the second external magnetic field, and based on the correspondence between the thrust and the intraocular pressure value, the intraocular pressure values ​​corresponding to different second generation parameters can be determined, and then the second mapping information between the second generation parameter and the intraocular pressure value can be established by pre-measurement.

[0089] Additionally, in one embodiment, the above intraocular pressure measurement method may further include:

[0090] During the process of applying a second external magnetic field to the magnetic component and after applying the second external magnetic field, the damping change characteristics of the sensing coil are obtained; based on the damping change characteristics, the inherent deformation characteristic parameters of the intraocular pressure measurement object and the second intraocular pressure measurement value are calculated; based on the deformation characteristic parameters, the first intraocular pressure measurement value and the second intraocular pressure measurement value, the target intraocular pressure measurement value is obtained.

[0091] The above deformation characteristic parameters can specifically be parameters such as corneal hardness or elastic modulus. The second external magnetic field is a transient magnetic field. During and after the second external magnetic field is applied to the magnetic component, the sensing coil on the corneal contact lens will be subjected to the magnetic field force and will show damped oscillation on the viscoelastic cornea. The mechanical damped oscillation can be read as a damped oscillation frequency change by a reading circuit that reads the resonant frequency of the sensing coil. Next, by analyzing the damped oscillation frequency change, parameters such as corneal hardness or elastic modulus, and the second intraocular pressure measurement value can be further obtained. Then, based on the corneal hardness or elastic modulus, the second intraocular pressure measurement value and other parameters, combined with the first intraocular pressure measurement value obtained by the above process, the final target intraocular pressure measurement value is obtained. Among them, the corneal hardness or elastic modulus can correct the measured first intraocular pressure measurement value.

[0092] Among them, a more accurate measurement value can be selected from the first intraocular pressure measurement value and the second intraocular pressure measurement value as the final intraocular pressure measurement value, or the first intraocular pressure measurement value and the second intraocular pressure measurement value can be calculated based on a preset calculation rule to obtain the final intraocular pressure measurement value. This scheme does not specifically limit the calculation method of the final target intraocular pressure measurement value.

[0093] In view of the problem that in the related art, since it is impossible to measure the deformation characteristic parameters such as the above-mentioned corneal hardness, in the actual intraocular pressure measurement process, it is necessary to additionally perform manual correction of the intraocular pressure value for the deformation characteristic parameters inherent in the measured individual, thereby affecting the efficiency of the intraocular pressure measurement. This embodiment calculates the inherent deformation characteristic parameters of the intraocular pressure measurement object according to the damping change characteristics, and then realizes the correction of the intraocular pressure measurement value, so that there is no need to manually correct the measured individual in the actual intraocular pressure measurement process, thereby improving the accuracy and efficiency of the intraocular pressure measurement.

[0094] The present embodiment is described and illustrated below through preferred embodiments.

[0095] In this preferred embodiment, when using a corneal contact lens in conjunction with a wearable detector to measure intraocular pressure, it includes a self-checking stage for the corneal contact lens and a measuring and processing stage for measuring intraocular pressure. The self-checking stage is mainly for the position detection and correction of the corneal contact lens, while the measuring and processing stage is mainly for the corneal contact lens and the wearable detector to cooperate with each other to complete the intraocular pressure measurement. Specifically, for the above self-checking stage, Figure 3 The figure is a flow chart of a method for correcting the position of a corneal contact lens according to a preferred embodiment. The method for correcting the position of a corneal contact lens is used before measuring intraocular pressure; for the above-mentioned measurement and processing stages, Figure 4 The figure is a flow chart of a method for measuring intraocular pressure in a preferred embodiment.

[0096] like Figure 3 As shown, the intraocular pressure measurement method includes the following steps:

[0097] Step S301, starting a magnetic field sensor integrated in a wearable detector; wherein the wearable detector may be a portable pair of glasses used in conjunction with a corneal contact lens; the corneal contact lens is provided with a magnetic component;

[0098] Step S302, detecting the average strength and uniformity of the magnetic field in a preset intraocular pressure measurement area based on a magnetic field sensor;

[0099] Step S303, determining whether the average magnetic field strength is within a preset strength range, if so, executing step S304, otherwise, executing step S305;

[0100] Step S304, determining whether the magnetic field uniformity is within a preset uniformity range, if so, executing step S307, otherwise, executing step S308;

[0101] Step S305, prompting the user to wear the wearable detector and the corneal contact lens in a standardized manner;

[0102] Step S306, after the user confirms that the wearer is wearing the device correctly, the process returns to step S301;

[0103] Step S307, determining that the corneal contact lens is in the intraocular pressure measurement position, and performing intraocular pressure measurement through the corneal contact lens in the intraocular pressure measurement position;

[0104] Step S308, calculating a pulse voltage for generating a first external magnetic field according to the average magnetic field strength, applying the first external magnetic field, and returning to step S301; wherein the first external magnetic field is used to generate an attractive force on the magnetic component of the corneal contact lens.

[0105] like Figure 4 As shown, the intraocular pressure measurement method includes:

[0106] Step S401, applying a second external magnetic field to the magnetic component of the corneal contact lens through a magnetic field generating circuit on the wearable detector; wherein the second external magnetic field is used to generate a thrust to the magnetic component;

[0107] Step S402, reading the first resonant frequency of the sensing coil in the central area of ​​the contact lens and the second resonant frequency of the reference coil in the peripheral area of ​​the contact lens through the reading coil on the wearable detector;

[0108] Step S403, obtaining a damping change characteristic of the sensing coil during and after the second external magnetic field is applied to the magnetic component;

[0109] Step S404, calculating the inherent deformation characteristic parameters and the intraocular pressure value of the intraocular pressure measurement object according to the damping change characteristic;

[0110] Step S405, determining a pre-measured reference difference value corresponding to the second resonant frequency according to the second resonant frequency;

[0111] Step S406, determining whether the difference between the first resonant frequency and the second resonant frequency reaches the reference difference; if so, executing step S407, otherwise, returning to executing step S401;

[0112] Step S407, according to the pulse voltage of the second external magnetic field generated at this time, determining the intraocular pressure value corresponding to the pulse voltage from the preset second mapping information;

[0113] Step S408, based on the intraocular pressure value obtained by the damping change characteristic in step S404, the intraocular pressure value corresponding to the pulse voltage in step S407, and the deformation characteristic parameter, a final intraocular pressure measurement value is obtained.

[0114] In this embodiment, an intraocular pressure measurement system is also provided, and the intraocular pressure measurement system applies the intraocular pressure measurement method provided by any of the above embodiments. Specifically, Figure 1As shown, the intraocular pressure measurement system may include a corneal contact lens 101 and a detector 102. The corneal contact lens 101 is a contact lens, and the detector 102 may be a frame-type wearable detector, which may also be called portable glasses. The intraocular pressure measurement system can realize position detection and position correction of the corneal contact lens, so as to place the corneal contact lens in an accurate intraocular pressure measurement position before intraocular pressure measurement, thereby improving the success rate of intraocular pressure measurement.

[0115] In one embodiment, the detector 102 is used to determine that a corneal contact lens provided with a magnetic component is at an intraocular pressure measurement position within the intraocular pressure measurement area when the detected average strength of the magnetic field within the intraocular pressure measurement area is within a preset strength range and the detected uniformity of the magnetic field within the intraocular pressure measurement area is within a preset uniformity range; and to determine that the corneal contact lens deviates from the intraocular pressure measurement position when the average strength of the magnetic field is within a preset strength range and the uniformity of the magnetic field is outside a preset uniformity range.

[0116] In addition, in one embodiment, the detector 102 is also used to calculate a first generation parameter for generating a first external magnetic field based on the magnetic field characteristics when the corneal contact lens deviates from the intraocular pressure measurement position; the first external magnetic field is used to generate an attractive force on the magnetic component so that the magnetic component drives the corneal contact lens to move to the intraocular pressure measurement position under the action of the attractive force; based on the first generation parameter, the first external magnetic field is applied to the magnetic component.

[0117] In one embodiment, the detector 102 is also used to generate a second external magnetic field according to a second generation parameter, and the second external magnetic field is used to generate thrust on the magnetic component; detect frequency change information of a sensing coil of a corneal contact lens; wherein the magnetic component is arranged in a preset central area of ​​the corneal contact lens; the sensing coil is arranged inside the magnetic component; when it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

[0118] In one embodiment, the detector 102 is used to detect a first resonant frequency of a sensing coil of a corneal contact lens and a second resonant frequency of a reference coil of the corneal contact lens; the reference coil is disposed in a preset edge region of the corneal contact lens; based on a difference between the first resonant frequency and the second resonant frequency, frequency change information of the sensing coil of the corneal contact lens is determined; when the difference between the first resonant frequency and the second resonant frequency is a preset reference difference, it is determined that the corneal contact lens is in a preset deformation state; when it is determined that the corneal contact lens is in a preset deformation state, based on the second generated parameter, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined.

[0119] In one embodiment, the detector 102 is used to detect the resonance frequency of the reference coil, and determine the reference difference value according to the first mapping information preset between the resonance frequency of the reference coil and the reference difference value.

[0120] In one embodiment, the detector 102 is used to determine the intraocular pressure value corresponding to the second generation parameter according to the preset second mapping information; and determine the intraocular pressure value corresponding to the second generation parameter as the first intraocular pressure measurement value of the intraocular pressure measurement object.

[0121] In one embodiment, the detector 102 is also used to obtain the damping change characteristics of the sensing coil during and after applying a second external magnetic field to the magnetic component; calculate the inherent deformation characteristic parameters of the intraocular pressure measurement object and the second intraocular pressure measurement value based on the damping change characteristics; and obtain the target intraocular pressure measurement value based on the deformation characteristic parameters, the first intraocular pressure measurement value and the second intraocular pressure measurement value.

[0122] In addition, in one embodiment, the intraocular pressure measurement system includes a corneal contact lens and a wearable detector. The corneal contact lens includes a magnetic component, a sensing coil and a reference coil; the wearable detector includes a reading coil, a magnetic field sensor and a magnetic field generating circuit; the magnetic component is arranged in the central area of ​​a preset size of the corneal contact lens; the sensing coil is arranged inside the magnetic component; the reference coil is arranged in the preset edge area of ​​the corneal contact lens; the frequency detection range of the reading coil covers the sensing coil and the reference coil; the magnetic field detection range of the magnetic field sensor covers the magnetic component; and the magnetic field range of the magnetic field generating circuit covers the magnetic component.

[0123] Figure 5 FIG. 5 is a schematic diagram of the structure of a corneal contact lens 50 used in this embodiment. Figure 5 As shown, the corneal contact lens 50 includes a magnetic component, a corneal contact lens outer edge 52, a reference coil 53, a sensing coil 54, a resonant capacitor 55 and a resonant capacitor 56. The magnetic component includes a magnetic powder skeleton 511 and magnetic powder 512. Figure 5 In the figure, the magnetic powder 512 is represented by the shaded part in the closed area formed by the magnetic powder skeleton 511. The reference coil 53 and the resonant capacitor 55 form a resonant circuit, and the sensing coil 54 and the resonant capacitor 56 form a resonant circuit. In this embodiment, the sensing coil 54 is arranged inside the magnetic component, the magnetic component is set in the central area, and the reference coil 53 is set in the edge area, so that the corneal contact lens can be deformed to a preset degree under the action of the external magnetic field, and the deformation state of the corneal contact lens can be accurately detected by the sensing coil 54 and the reference coil 53.

[0124] Figure 6 FIG. 6 is a schematic diagram of the structure of a wearable detector 60 used in this embodiment. Figure 6As shown, the wearable detector 60 includes a reading coil 61, a magnetic field generating circuit 62, a magnetic field sensor 63, a portable lens 64, a portable temple 65 and a portable nose bridge 66. In addition, the wearable detector 60 may also include a power supply and a circuit communication module (not shown in the figure).

[0125] In this embodiment, the consumable parts of the corneal contact lens are all passive LC circuits, magnetic powder, hydrogel, and contact lens substrates, etc. The required material and process costs are low, which is convenient for the scale expansion of users. In addition, the wearable detector does not need to be specially fixed to the user's head, and the compliance of use is good, and the high-voltage generating circuit on the wearable detector is pulsed, which is highly feasible. In addition, the electromagnetic field frequency sensed by the reading coil on the wearable detector ranges from tens of megahertz to gigahertz, and the magnetic field frequency generated by the magnetic field generating circuit is below kilohertz. Therefore, the electromagnetic field frequency sensed by the reading coil is far away from the frequency generated by the magnetic field generating circuit, which is convenient for the two circuits to work at the same time, and the magnetic field generating circuit on the wearable detector is pulsed, and the circuit is highly feasible.

[0126] Additionally, in one embodiment, the magnetic component includes magnetic powder and a rigid magnetic powder skeleton; the magnetic powder is arranged in a closed area formed by the magnetic powder skeleton. The magnetic powder skeleton is a hard material, and the shape of the magnetic powder skeleton can be an umbrella, a mesh or other shapes. The magnetic powder can be flexible or rigid, and can also be other transparent and non-transparent materials. The magnetic powder can be arranged inside the magnetic powder skeleton, or between the structures of the magnetic powder skeleton. By setting the magnetic component as a structure composed of magnetic powder and a magnetic powder skeleton, and setting the magnetic powder in the closed area formed by the magnetic powder skeleton, it is possible to prevent the corneal contact lens from bulging under the action of an external magnetic field, thereby causing it to detach from the cornea.

[0127] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0128] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0129] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0130] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0131] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A method for measuring intraocular pressure, characterized in that: include: Determining whether the corneal contact lens provided with a magnetic component deviates from an intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area, wherein the intraocular pressure measurement position is located in the intraocular pressure measurement area; In the case where the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position; Intraocular pressure measurement is performed with the contact lens in the intraocular pressure measurement position.

2. The intraocular pressure measurement method according to claim 1, characterized in that: The magnetic field characteristics include the average magnetic field strength and the magnetic field uniformity. The determining whether the corneal contact lens provided with the magnetic component deviates from the intraocular pressure measurement position according to the detected magnetic field characteristics in the intraocular pressure measurement area includes: When the detected average intensity of the magnetic field in the intraocular pressure measurement area is within a preset intensity range, and the detected uniformity of the magnetic field in the intraocular pressure measurement area is within a preset uniformity range, determining that the corneal contact lens provided with the magnetic component is in the intraocular pressure measurement position; When the average intensity of the magnetic field is within a preset intensity range and the uniformity of the magnetic field is outside a preset uniformity range, it is determined that the corneal contact lens deviates from the intraocular pressure measurement position.

3. The intraocular pressure measurement method according to claim 1, characterized in that: When the corneal contact lens deviates from the intraocular pressure measurement position, the position of the corneal contact lens is corrected based on the magnetic field characteristics so that the corneal contact lens is in the intraocular pressure measurement position, comprising: In the case where the corneal contact lens deviates from the intraocular pressure measurement position, a first generation parameter for generating a first external magnetic field is calculated according to the magnetic field characteristics; the first external magnetic field is used to generate an attractive force on the magnetic component, so that the magnetic component drives the corneal contact lens to move to the intraocular pressure measurement position under the action of the attractive force; Based on the first generation parameter, the first external magnetic field is applied to the magnetic component.

4. The intraocular pressure measurement method according to claim 1, characterized in that: The intraocular pressure measurement is performed by the corneal contact lens in the intraocular pressure measurement position, comprising: generating a second external magnetic field according to a second generation parameter, wherein the second external magnetic field is used to generate thrust on the magnetic component; Detecting frequency change information of the sensing coil of the corneal contact lens; wherein the magnetic component is arranged in a preset central area of ​​the corneal contact lens; and the sensing coil is arranged inside the magnetic component; When it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

5. The intraocular pressure measurement method according to claim 4, characterized in that: The frequency change information of the sensing coil for detecting the corneal contact lens includes: Detecting a first resonant frequency of a sensing coil of the contact lens and a second resonant frequency of a reference coil of the contact lens; the reference coil is disposed at a preset edge region of the contact lens; Determining frequency change information of the sensing coil of the corneal contact lens based on the difference between the first resonant frequency and the second resonant frequency; When it is determined that the corneal contact lens is in a preset deformation state based on the frequency change information, determining a first intraocular pressure measurement value of the intraocular pressure measurement object based on the second generated parameter includes: When the difference between the first resonant frequency and the second resonant frequency is a preset reference difference, determining that the corneal contact lens is in a preset deformation state; When it is determined that the corneal contact lens is in a preset deformation state, a first intraocular pressure measurement value of the intraocular pressure measurement object is determined based on the second generation parameter.

6. The intraocular pressure measurement method according to claim 5, characterized in that: The method further comprises: The resonant frequency of the reference coil is detected, and the reference difference value is determined according to first mapping information preset between the resonant frequency of the reference coil and the reference difference value.

7. The intraocular pressure measurement method according to claim 4, characterized in that: The step of determining a first intraocular pressure measurement value of an intraocular pressure measurement object based on the second generated parameter includes: Determine an intraocular pressure value corresponding to the second generation parameter according to preset second mapping information; The intraocular pressure value corresponding to the second generation parameter is determined as the first intraocular pressure measurement value of the intraocular pressure measurement object.

8. The intraocular pressure measurement method according to claim 7, characterized in that: The preset second mapping information is established in advance based on the corresponding relationship between the second generation parameter and the thrust generated by the second external magnetic field, and the corresponding relationship between the thrust and the intraocular pressure value.

9. The intraocular pressure measurement method according to claim 4, characterized in that: The method further comprises: During the process of applying the second external magnetic field to the magnetic component and after applying the second external magnetic field, obtaining a damping change characteristic of the sensing coil; Calculating the inherent deformation characteristic parameter of the intraocular pressure measurement object and a second intraocular pressure measurement value according to the damping change characteristic; A target intraocular pressure measurement value is obtained based on the deformation characteristic parameter, the first intraocular pressure measurement value, and the second intraocular pressure measurement value.

10. An intraocular pressure measurement system, characterized in that: The intraocular pressure measurement system applies the intraocular pressure measurement method according to any one of claims 1 to 9.

11. The intraocular pressure measurement system according to claim 10, characterized in that: The intraocular pressure measurement system comprises a corneal contact lens and a wearable detector; the corneal contact lens comprises a magnetic component, a sensing coil and a reference coil; the wearable detector comprises a reading coil, a magnetic field sensor and a magnetic field generating circuit; The magnetic component is arranged in the central area of ​​the corneal contact lens of a preset size; the sensing coil is arranged inside the magnetic component; and the reference coil is arranged in the preset edge area of ​​the corneal contact lens; The frequency detection range of the reading coil covers the sensing coil and the reference coil; the magnetic field detection range of the magnetic field sensor covers the magnetic component; and the magnetic field range of the magnetic field generating circuit covers the magnetic component.

12. The intraocular pressure measurement system according to claim 10, characterized in that: The magnetic component comprises magnetic powder and a rigid magnetic powder skeleton; the magnetic powder is arranged in a closed area formed by the magnetic powder skeleton.

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