Intraocular pressure measurement system

Abstract

The invention relates to an intraocular pressure measuring system which comprises a corneal contact lens and a detector, the corneal contact lens is used for making contact with an eyeball, and the corneal contact lens comprises a first magnetic part; the detector comprises a magnetic field generation module, the magnetic field generation module comprises a first driving coil and a second driving coil which are coaxially arranged, the radial size of the first driving coil is smaller than that of the second driving coil, and the first driving coil and the second driving coil are used for generating magnetic fields to act on the first magnetic part. As the radial size of the first driving coil is smaller than that of the second driving coil, compared with the second driving coil, the range of a magnetic field generated by the first driving wire is smaller, the first driving coil is easily used for positioning the first driving coil and the corneal contact lens, the range of a magnetic field generated by the second driving coil is larger, and the coverage range of the magnetic field is wider; the magnetic field in the coverage range is more uniform, and the corneal contact lens can conveniently push and press eyeballs.

Description

Technical Field

[0001] The present application relates to the technical field of intraocular pressure measurement, and in particular to 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 of detecting and treating glaucoma. Current methods of measuring intraocular pressure 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 the related art, intraocular pressure is usually measured indirectly by the change of corneal shape. The existing intraocular pressure measurement system includes a corneal contact lens and a detector. The corneal contact lens is filled with magnetic powder, and a strain sensing circuit and an internal signal processing module are integrated. The detector is integrated with a magnetic field generation module and an external signal processing circuit. The magnetic field generation module is used to generate a magnetic field to push the corneal contact lens containing magnetic powder, so that the corneal contact lens is deformed and displaced. The magnetic field generation module has both "reset" and "push" capabilities, and its driving current direction is opposite. The "push" function is to implement the flattening effect, and the "reset" function is to adjust the relative position of the corneal contact lens and the magnetic field generation module to achieve the best test state. The existing magnetic field generation module generates the same magnetic field force when "reset" and "push", but in actual use, different magnetic field forces are required to achieve "reset" and "push", and the existing magnetic field generation module has low magnetic drive efficiency. Summary of the invention

[0004] Based on this, it is necessary to provide an intraocular pressure measurement system to address the problem of low magnetic drive efficiency of existing magnetic field generation modules.

[0005] An intraocular pressure measurement system, the intraocular pressure measurement system comprising:

[0006] A corneal contact lens, used for contacting with an eyeball, the corneal contact lens comprising a first magnetic member;

[0007] The detector includes a magnetic field generating module, wherein the magnetic field generating module includes a first driving coil and a second driving coil arranged coaxially, wherein the radial dimension of the first driving coil is smaller than the radial dimension of the second driving coil, and the first driving coil and the second driving coil are used to generate a magnetic field to act on the first magnetic member respectively.

[0008] In one of the embodiments, the detector includes a positioning module, the positioning module includes a positioning sensor installed on the magnetic field generating module, and the positioning sensor is used to detect whether the first magnetic member is aligned with the first driving coil.

[0009] In one embodiment, a plurality of positioning sensors are provided, and the plurality of positioning sensors are arranged around the circumference of the magnetic field generating module.

[0010] In one of the embodiments, the positioning module further includes a reference sensor mounted on the detector, and the reference sensor is used to calibrate the positioning sensor.

[0011] In one embodiment, the first magnetic member includes a ring-shaped magnet.

[0012] In one embodiment, the corneal contact lens includes a detection layer, the first magnetic member is arranged on the detection layer, the detection layer also includes a detection coil and a reference coil, the detection coil is arranged on the first magnetic member, and the reference coil is arranged in a preset edge area of ​​the detection layer;

[0013] The detector includes a processing module and a reading coil which are communicatively connected. The reading coil is used to generate a reading signal to achieve resonance with the detection coil and the reference coil respectively, obtain resonant electrical signals respectively, and transmit each resonant signal to the processing module for intraocular pressure calculation.

[0014] In one of the embodiments, the detection layer further includes a second magnetic member, and the second magnetic member is disposed in the preset edge region.

[0015] In one embodiment, the corneal contact lens further includes a first film and a second film, the detection layer is sandwiched between the first film and the second film, and the first film is used to contact the eyeball.

[0016] In one embodiment, the stiffness of the second membrane is greater than the stiffness of the first membrane.

[0017] In one embodiment, the corneal contact lens includes a detection layer, the first magnetic member is arranged on the detection layer, the detection layer also includes a deformation sensor component and a transmission module, the transmission module is arranged in a preset edge area of ​​the detection layer, and the deformation sensor component is located between the first magnetic member and the transmission module;

[0018] The detector includes a processing module, and the transmission module is used to transmit the electrical signal of the deformation sensor component under deformation to the processing module, and the processing module calculates the intraocular pressure according to the electrical signal.

[0019] In one of the embodiments, the detector includes a body, and the magnetic field generating module is mounted on the body;

[0020] The main body is in the shape of a glasses frame or an eye mask.

[0021] In the above intraocular pressure measurement system, the corneal contact lens is worn on the eyeball, and the radial dimension of the first drive coil is smaller than the radial dimension of the second drive coil. Compared with the second drive coil, the radial dimension of the first drive coil is smaller. When the current is turned on, the reset magnetic field generated by the first drive coil is smaller than the magnetic field range of the pushing magnetic field generated by the second drive coil, which can better make the relative position positioning between the corneal contact lens and the first drive coil more accurate. When the magnetic field generating module and the corneal contact lens are coaxial, the second drive coil is energized to generate a pushing magnetic field. The magnetic field range of the pushing magnetic field generated by the second drive coil is larger, and the range covered by the pushing magnetic field is wider. The magnetic field within the coverage range is more uniform, and the interaction force of the corneal contact lens under the action of the pushing magnetic field is more uniform, which can be better used to flatten the eyeball. The intraocular pressure measurement system provided by the present application changes the radial dimensions of the first drive coil and the second drive coil, which not only efficiently utilizes the space of the detector, but also improves the magnetic drive efficiency of the magnetic field generating module. The first drive coil is more suitable for "resetting" the contact lens, that is, generating a pulling force of mutual attraction with the contact lens to move the contact lens to a suitable detection position, because the magnetic field range generated by the first drive coil is smaller and more sensitive to position deviation, so when the reset current is input, it is easier to move the contact lens, thereby playing a role in adjusting the position of the contact lens. The second drive coil is more suitable for "pushing" the contact lens, because the second drive coil is larger in size, and the pushing magnetic field range it generates is larger, and the magnetic field within the magnetic field coverage range is more uniform, so the magnetic field force on each part of the contact lens is more uniform, and it is not easy to push the contact lens off. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a first viewing angle when a first driving coil and a corneal contact lens are aligned in an embodiment of an intraocular pressure measurement system of the present application.

[0023] Figure 2 A structural schematic diagram of a second viewing angle when a first drive coil and a corneal contact lens are aligned in an embodiment of the intraocular pressure measurement system of the present application.

[0024] Figure 3 A schematic structural diagram of a detector provided in an embodiment of the intraocular pressure measurement system of the present application, wherein the body of the detector is in the shape of a glasses frame.

[0025] Figure 4 A schematic diagram of the structure of the detector provided in the embodiment of the intraocular pressure measurement system of the present application, in which the main body is in the shape of an eye mask.

[0026] Figure 5 A schematic diagram of the structure of a corneal contact lens worn on an eyeball provided in an embodiment of the intraocular pressure measurement system of the present application.

[0027] Figure 6 A schematic structural diagram of a corneal contact lens provided in an embodiment of the intraocular pressure measurement system of the present application.

[0028] Figure 7 A schematic structural diagram of the detection layer of the corneal contact lens provided in Example 1 of the intraocular pressure measurement system of the present application.

[0029] Figure 8 This is a structural block diagram of the intraocular pressure measurement system provided in Example 1 of the intraocular pressure measurement system of the present application.

[0030] Fig. 9 A schematic structural diagram of the detection layer of the corneal contact lens provided in Example 2 of the intraocular pressure measurement system of the present application.

[0031] Fig.10 This is a structural block diagram of the intraocular pressure measurement system provided in Example 2 of the intraocular pressure measurement system of the present application.

[0032] Fig.11 This is a flow chart of the intraocular pressure measurement method provided in an embodiment of the present application.

[0033] In the figure:

[0034] 100, corneal contact lens; 110, detection layer; 111, first magnetic member; 112, detection coil; 113, reference coil; 114, second magnetic member; 115, cantilever; 1151, through hole; 116, deformation sensor assembly; 117, transmission module;

[0035] 120, first film; 130, second film;

[0036] 200, detector; 210, magnetic field generating module; 211, first driving coil; 212, second driving coil; 220, positioning sensor; 230, reference sensor; 240, body; 250, processing module;

[0037] 300. Eyeball. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0040] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0044] The prior art uses a wireless applanation intraocular pressure detection system, which consists of two major parts: a corneal contact lens and an external pair of glasses. Magnetic powder is filled inside the corneal contact lens, and a strain sensing circuit and an internal signal processing module are integrated at the same time. A magnetic field generation module and an external signal processing circuit are integrated on the external pair of glasses. The magnetic field generation module is used to generate a magnetic field to push the contact lens containing magnetic powder, causing the latter to deform and displace. The internal signal processing circuit is used to transmit the strain sensed by the strain sensing circuit to the external signal circuit, and the external signal circuit compares the electrical signal value stored therein during applanation with the value received from the internal signal circuit, and then adjusts the magnetic field generation module until the user's eyeballs are flattened. When the user's eyeballs are flattened, the external signal processing module calculates the magnetic field force generated on the corresponding eyeballs according to the input voltages of the two magnetic field generation modules, calculates the intraocular pressure of the user's two eyeballs according to the Imbert-Fick law, and sends the calculated intraocular pressure to an external computer or mobile communication device.

[0045] However, there are some problems with the prior art: First, the measurement results are affected by the relative position of the contact lens and the glasses. The magnetic force of the external magnetic field generating module on the magnetic corneal contact lens is related to the relative position of the two, such as the distance, whether the center is aligned, etc. During measurement, if the positional relationship between the contact lens and the detector is uncertain, the difference in input required to flatten the eyeball will be relatively large, affecting the accuracy of the measurement. Second, the magnetic powder-filled corneal contact lens has very weak magnetism and requires a very large driving current. This type of magnetic fluid is an isotropic magnetic material, and its magnetization intensity is much weaker than that of anisotropic materials. It is also limited by the volume of the corneal contact lens, and its overall magnetism is very weak. Therefore, it requires a very high current, usually thousands of amperes, to generate a thrust sufficient to measure intraocular pressure through external magnetic field drive, which places high demands on portable devices.

[0046] The present application provides an intraocular pressure measurement system, such as Figure 1 and Figure 2As shown, the intraocular pressure measurement system includes a corneal contact lens 100 and a detector 200. The corneal contact lens 100 is used to contact the eyeball 300, and the corneal contact lens 100 includes a first magnetic member 111; the detector 200 includes a magnetic field generating module 210, and the magnetic field generating module 210 includes a first driving coil 211 and a second driving coil 212 which are coaxially arranged. The radial dimension of the first driving coil 211 is smaller than the radial dimension of the second driving coil 212. The first driving coil 211 and the second driving coil 212 are used to generate a magnetic field and respectively act on the first magnetic member 111.

[0047] In the above intraocular pressure measurement system, the contact lens 100 is worn on the eyeball 300, and the detector 200 is worn on the face. Since the radial dimension of the first drive coil 211 is smaller than the radial dimension of the second drive coil 212, the magnetic field range generated by the first drive coil 211 is smaller than that of the second drive coil 212, and the first drive coil 211 is easy to use to position the first drive coil 211 and the contact lens 100. The magnetic field range generated by the second drive coil 212 is larger, and the magnetic field covers a wider range. The magnetic field within the coverage range is more uniform, which is convenient for using the contact lens 100 to push the eyeball 300.

[0048] In a specific embodiment, the radial dimension of the first drive coil 211 is smaller than the radial dimension of the second drive coil 212, and the first drive coil 211 is located between the second drive coil 212 and the contact lens 100, then compared with the second drive coil 212, the first drive coil 211 is closer to the contact lens 100 and has a smaller radial dimension. When the current is turned on, the range of the reset magnetic field generated by the first drive coil 211 is smaller than the range of the reset magnetic field generated by the second drive coil 212, which can better make the relative position between the contact lens 100 and the first drive coil 211 more accurate. The reset magnetic field facilitates the movement of the contact lens 100, thereby adjusting the relative position between the contact lens 100 and the magnetic field generating module 210, and moving the contact lens 100 so that the magnetic field generating module 210 and the contact lens 100 are coaxial. When the magnetic field generating module 210 and the corneal contact lens 100 are coaxial, the second driving coil 212 is energized to generate a pushing magnetic field. Compared with the reset magnetic field, the pushing magnetic field generated by the second driving coil 212 has a larger magnetic field range, and the pushing magnetic field covers a wider range. The magnetic field within the coverage range is more uniform, and the magnetic field force applied to each part of the first magnetic part 111 of the corneal contact lens 100 is also uniform and more stable. The interaction force of the corneal contact lens 100 under the action of the pushing magnetic field is more uniform, and can be better used to flatten the eyeball 300. The intraocular pressure measurement system provided by the present application changes the radial dimensions of the first driving coil 211 and the second driving coil 212, which not only effectively utilizes the space of the detector 200, but also improves the magnetic drive efficiency of the magnetic field generating module 210. The first drive coil 211 is more suitable for "resetting" the contact lens 100, that is, generating a pulling force of mutual attraction with the contact lens 100, so that the contact lens 100 moves to a suitable detection position, because the magnetic field range generated by the first drive coil 211 is smaller and more sensitive to the position deviation, so when the reset current is input, it is easier to move the contact lens 100, thereby playing a role in adjusting the position of the contact lens 100. The second drive coil 212 is more suitable for "pushing" the contact lens 100, because the second drive coil 212 is larger in size, and the magnetic field range it generates is also larger, the pushing magnetic field covers a wider range, and the magnetic field within the magnetic field coverage range is more uniform, so the magnetic field force on each part of the contact lens 100 is more uniform, and the magnetic field force applied to the first magnetic member 111 of the contact lens 100 is more stable, so it is not easy to "push" the contact lens 100.

[0049] It should be noted that the first drive coil 211 is used to generate a reset magnetic field to move the contact lens 100 relative to the magnetic field generating module 210 until the first drive coil 211 and the contact lens 100 are coaxial; the second drive coil 212 is used to generate a push magnetic field to flatten the contact lens 100 to flatten the eyeball 300. The first drive coil 211 and the second drive coil 212 generate different magnetic fields that act on the first magnetic member 111 respectively, thereby achieving "reset" or "push".

[0050] exist Figure 2 In the figure, the left view is a schematic diagram of the structure when the first driving coil 211 of the magnetic field generating module 210 and the contact lens 100 are aligned, that is, a schematic diagram of the structure that the magnetic field generating module 210 and the contact lens 100 are coaxial. The right view shows two states of the contact lens 100, the solid line shows the state when the contact lens 100 flattens the eyeball 300, and the dotted line shows the state when the contact lens 100 does not flatten the eyeball 300.

[0051] In some embodiments, the first driving coil 211 and / or the second driving coil 212 are spiral-shaped. In some embodiments, the first driving coil 211 and / or the second driving coil 212 are wound in a column shape.

[0052] In a specific embodiment, when the second driving coil 212 is spiral, Figure 1 and Figure 2 As shown, the radial dimension of the second drive coil 212 gradually decreases along its own axial direction toward the first drive coil 211; the second drive coil 212 is located on the side of the first drive coil 211 away from the corneal contact lens 100. Compared with the first drive coil 211, the second drive coil 212 is farther away from the corneal contact lens 100, and the second drive coil 212 is a coil with a larger radius. When the current is turned on, the pushing magnetic field range generated by the second drive coil 212 is larger, and the magnetic field force on the corneal contact lens within its magnetic field range will be more uniform, which is convenient for "pushing" the eyeball 300.

[0053] When the first driving coil 211 is spiral, Figure 1 and Figure 2As shown, the radial dimension of the first drive coil 211 gradually decreases in the direction away from the second drive coil 212 along its own axial direction, and the minimum radial dimension of the second drive coil 212 is greater than the maximum radial dimension of the first drive coil 211. Compared with the second drive coil 212, the first drive coil 211 is closer to the corneal contact lens 100, and the first drive coil 211 is a coil with a smaller radius. When conducting an equivalent current, the magnetic field force of the reset magnetic field generated by the first drive coil 211 has a more significant effect of pulling toward the center, and the relative position between the corneal contact lens 100 and the first drive coil 211 is more accurately positioned, which is convenient for driving the corneal contact lens 100 to move, thereby "resetting" it.

[0054] In some embodiments, the first driving coil 211 and the second driving coil 212 are located in the same plane, and the first driving coil 211 is nested in the second driving coil 212 .

[0055] In some embodiments, Figure 3 As shown, the detector 200 further includes a processing module 250, which is used to receive relevant data and calculate intraocular pressure.

[0056] In some embodiments, the detector 200 further includes a power module, which is connected to the magnetic field generating module 210 and the processing module 250 , and is used to supply power to the magnetic field generating module 210 and the processing module 250 .

[0057] In some embodiments, Figure 3 As shown, the detector 200 includes a body 240, and a magnetic field generating module 210 is mounted on the body 240, and the body 240 is in the shape of a glasses frame. The first driving coil 211 and the second driving coil 212 of the magnetic field generating module 210 are mounted on the area where the lens is mounted on the glasses frame, and the first driving coil 211 is located between the second driving coil 212 and the corneal contact lens 100.

[0058] It should be noted that when the main body 240 is in the shape of a glasses frame, the processing module 250 can be installed on the glasses legs of the glasses frame, or it can be worn around the waist of the inspector and then connected to the main body 240 via a cable, which can reduce the weight and volume of the main body 240.

[0059] In some embodiments, Figure 4 As shown, the detector 200 includes a body 240, and the magnetic field generating module 210 is mounted on the body 240, and the body 240 is in the shape of an eye mask. The intraocular pressure measurement system can be used all day, including at night. In order to facilitate the user's use at night and improve the comfort of use, the body 240 is processed into an eye mask shape for easy wearing.

[0060] It should be noted that when the body 240 is in the shape of an eye mask, the first drive coil 211 and the second drive coil 212 of the magnetic field generating module 210 are in the same plane, and the first drive coil 211 and the second drive coil 212 need to be processed into a flat shape or a concentric circle shape. The first drive coil 211 (inner circle) is more suitable for "resetting", and the second drive coil 212 (outer circle) is more suitable for "pushing". In addition, the processing module 250 and the power module of the detector 200 can be placed in a bedside table or other places, and the power module can also be plugged in to ensure better output capacity and longer working time.

[0061] In some embodiments, Figures 1 to 4 As shown, the detector 200 includes a positioning module, and the positioning module includes a positioning sensor 220 installed on the magnetic field generating module 210, and the positioning sensor 220 is used to detect whether the first magnetic member 111 and the first driving coil 211 are aligned. By arranging the positioning module on the detector 200, the positioning sensor 220 of the positioning module detects whether the first magnetic member 111 and the first driving coil 211 are aligned. If the two are not aligned, the first magnetic member 111 is driven to move by the first driving coil 211, so that the two are aligned.

[0062] In some embodiments, Figures 1 to 4 As shown, a plurality of positioning sensors 220 are provided, and the plurality of positioning sensors 220 are arranged around the circumference of the magnetic field generating module 210. By providing a plurality of positioning sensors 220, if the data measured by the plurality of positioning sensors 220 at different positions are the same, it is determined that the first driving coil 211 is aligned with the first magnetic member 111 of the corneal contact lens 100.

[0063] In some embodiments, there are four positioning sensors 220, and the four positioning sensors 220 are evenly arranged around the circumference of the magnetic field generating module 210. In some embodiments, the number of positioning sensors 220 is set according to actual operation needs, for example, it can be set to five, six, seven, or eight.

[0064] In some embodiments, the plurality of positioning sensors 220 are arranged around the circumference of the magnetic field generating module 210 , that is, the plurality of positioning sensors 220 are arranged around the circumference of the first driving coil 211 .

[0065] In some embodiments, the plurality of positioning sensors 220 are arranged around the circumference of the magnetic field generating module 210 , that is, the plurality of positioning sensors 220 are arranged around the circumference of the second driving coil 212 .

[0066] In some embodiments, Figures 1 to 4As shown, the positioning module also includes a reference sensor 230 installed on the detector 200, and the reference sensor 230 is used to calibrate the positioning sensor 220. By setting the reference sensor 230, the reference sensor 230 transmits the measured data to the processing module 250, and the processing module 250 calibrates the measurement result of the positioning sensor 220 according to the data transmitted by the reference sensor 230, thereby improving the accuracy of the intraocular pressure calculation result.

[0067] It should be noted that if Figure 3 and Figure 4 As shown, when the reference sensor 230 is installed on the body 240, it is necessary to consider the mutual influence between the reference sensor 230 and the magnetic unit of the contact lens 100. Therefore, when the body 240 is in the shape of a glasses frame, the reference sensor 230 can be installed on the nose bridge part or the temple part of the body 240, and the installation posture of the reference sensor 230 is consistent with the installation posture of the positioning sensor 220. When the body 240 is in the shape of an eye mask, the reference sensor 230 can be installed between the two magnetic field generating modules 210.

[0068] In some embodiments, the positioning sensor 220 and the reference sensor 230 are the same type of high-sensitivity sensors, such as AMR or TMR sensors, with a size of 0.5 mm to 3.0 mm wide square and 0.5 to 1.0 mm high, MEMS devices, such as AK09940 or MMC5983MA, etc. The sensitivity of such sensors can reach 10 nT, the noise is less than 1 μT, and weak magnetic field detection can be performed.

[0069] The magnetic field data measured by any one of the positioning sensors 220 can be expressed as follows:

[0070] B o =R 1 B len +R 2 B bg (1-1)

[0071] Assume that the noise is negligible and the sensor has been calibrated. Here B o is the sensor’s readout value; B len B is the magnetic field of the magnet module in the corneal contact lens 100; bg is the background magnetic field; R 1 With R 2 is a rotation matrix, which represents the posture relationship between the positioning array, the corneal contact lens 100, and the environmental coordinate system. Because the read magnetic field is the projection of the combined magnetic field on the three axes of the sensor, a rotation transformation is required. From the above formula, it can be seen that changes in the posture of the corneal contact lens 100 relative to the sensor array or changes in the posture of the human body relative to the background magnetic field or fluctuations in the overall background magnetic field will cause fluctuations in the read data. Therefore, the background part (R2 B bg ) is deducted. Since the reference sensor 230 is far away from the magnet module of the corneal contact lens 100, B len The contribution of the part, its readout magnetic field is expressed as follows:

[0072] B′ o =R′ 2 B bg (1-2)

[0073] Comparing (1-1) and (1-2), as long as the reference sensor 230 and the positioning sensor 220 are installed in the same posture (R′ 2 ≈R 2 ), or after factory calibration of relative attitude, the background interference can be subtracted by difference:

[0074] ΔB=B 0 -B′ 0 =R 1 B len (1-3)

[0075] At this time, the readout values ​​of (1-3) mainly reflect the positional relationship between the corneal contact lens 100 and the positioning array: the intensity reflects the distance, and the distribution reflects the horizontal position.

[0076] In some embodiments, Figure 2 , Figure 7 ,as well as Fig. 9 As shown, the intraocular pressure measurement system provided by the present application, the corneal contact lens 100 includes a detection layer 110, a first magnetic member 111 is arranged on the detection layer 110, the detection layer 110 also includes a detection coil 112 and a reference coil 113, the detection coil 112 is arranged on the first magnetic member 111, and the reference coil 113 is arranged in a preset edge area of ​​the detection layer 110; the detector 200 includes a processing module 250 and a reading coil connected in communication, the reading coil is used to generate a reading signal, thereby achieving resonance with the detection coil 112 and the reference coil 113 respectively, and obtaining resonance signals respectively, and transmitting each resonance signal to the processing module 250 for intraocular pressure calculation.

[0077] A detection layer 110 is provided on the corneal contact lens 100, and a first magnetic member 111, a detection coil 112, and a reference coil 113 are all provided on the detection layer 110. The first driving coil 211 is energized to generate a reset magnetic field, and the reset magnetic field and the first magnetic member 111 cooperate with each other to drive the corneal contact lens 100 to move and adjust the relative position of the corneal contact lens 100 and the first driving coil 211. When the corneal contact lens 100 is aligned with the first driving coil 211, the second driving coil 212 is energized to generate a pushing magnetic field, so that the detection layer 110 flattens the eyeball 300. The reading coil is used to act with the detection coil 112 and the reference coil 113 to obtain the resonance signals of the detection coil 112 and the reference coil 113 respectively. The reading coil obtains each resonance signal and transmits it to the processing module 250. The positioning module transmits the measured data to the processing module 250. The processing module 250 calculates the intraocular pressure according to the received data.

[0078] It should be noted that the reading signal generated by the reading coil is a high-frequency signal, and the frequency range of the high-frequency signal can be, for example, greater than 3MHz. The electromagnetic field frequency sensed by the reading coil (tens of MHz to GHz) is far away from the magnetic field frequency (below KHz) generated by the magnetic field generation module 210, which is very different, so that the two circuits can work simultaneously without affecting each other, and the circuit feasibility is good.

[0079] It should be noted that the preset edge area refers to the edge of the detection layer 110, which is an area extending radially inward from the maximum boundary of the detection layer 110 to a preset distance from the boundary. Furthermore, the preset edge area is an annular area or a quasi-annular area.

[0080] It should be noted that, when the first drive coil 211 and the first magnetic member 111 are aligned, the second drive coil 212 is used to generate a pushing magnetic field to drive the first magnetic member 111 to flatten the eyeball 300. The reading coil of the detector 200 is used to detect the first resonant frequency of the detection coil 112 of the contact lens 100 and the second resonant frequency of the reference coil 113 of the contact lens 100; based on the difference between the first resonant frequency and the second resonant frequency, the frequency change information of the detection coil 112 of the contact lens 100 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 contact lens 100 is in a preset deformation state.

[0081] Since the contact lens 100 is fitted to the eyeball 300, when the contact lens 100 is deformed, the eyeball 300 also deforms accordingly. Finally, the intraocular pressure measurement value is determined based on the magnetic field generation parameters required when the contact lens 100 is deformed to a preset state by the external magnetic field.

[0082] Preferably, the first magnetic member 111 includes a ring-shaped magnet.

[0083] In some embodiments, the first magnetic member 111 is a magnetic ring, which is disposed on the detection layer 110 , and the magnetic fields generated by the first driving coil 211 and the second driving coil 212 act on the first magnetic member 111 respectively.

[0084] In some embodiments, Figure 7 As shown, the first magnetic member 111 includes a plurality of magnetic sheets, and the plurality of magnetic sheets are arranged in a ring shape, so that the first magnetic member 111 has an overall ring structure.

[0085] The first magnetic member 111 is an anisotropic magnetic ring, or a plurality of anisotropic magnetic sheets are arranged in a ring shape, which solves the problem that the magnetic powder-filled corneal contact lens 100 has weak magnetism. The anisotropic magnetic sheet can be made into a sheet with a thickness of 0.1-0.3 mm, a length and width of 0.3-0.8 mm, and the material is NdFeB (neodymium iron boron).

[0086] Here, the working principle is explained by using a first magnetic member 111 formed of a plurality of magnetic sheets and surrounded by a ring.

[0087] The present application uses distributed anisotropic magnetic sheets instead of magnetic powder to form a magnetic unit of the corneal contact lens 100 (magnetization direction is perpendicular to Figure 7 (The anisotropic magnetic sheet has a stronger magnetism than the isotropic magnetic powder, so a smaller external magnetic field gradient is required to generate a comparable magnetic driving force. At the same time, due to the higher strength of the anisotropic magnetic sheet, the deformation of this part of the "magnetic ring" itself is smaller, reducing interference.

[0088] It should be noted that the alignment of the first magnetic member 111 and the first driving coil 211 mentioned above means that the axis of the first driving coil 211 coincides with the axis of the annular first magnetic member 111 .

[0089] In some embodiments, Figure 7 and Figure 8As shown, the detection layer 110 also includes a second magnetic member 114, and the second magnetic member 114 is arranged in a preset edge area. In order to further improve the pressure measurement stability, the second magnetic member 114 is arranged in the preset edge area, that is, the second magnetic member 114 is added to the outside of the first magnetic member 111, and the magnetization direction of the first magnetic member 111 and the second magnetic member 114 is the same, so that the force direction of the first magnetic member 111 and the second magnetic member 114 is also basically the same, so that the corneal contact lens 100 is in closer contact with the eyeball 300 as a whole when under pressure, and at the same time, the corneal contact lens 100 is prevented from warping at the edge. In some embodiments, the second magnetic member 114 is a fixed magnetic ring composed of a circle of magnetic fluid, and the fixed magnetic ring is made of neodymium iron boron (NdFeB) and polydimethylsiloxane (PDMS) materials.

[0090] In some embodiments, the second magnetic member 114 includes a plurality of magnetic sheets, which are arranged in a ring shape and are located in a preset edge area.

[0091] It should be noted that the reference coil 113 and the second magnetic member 114 are both arranged in a preset edge area. In some embodiments, the reference coil 113 and the second magnetic member 114 are stacked one on top of the other. In some embodiments, the reference coil 113 and the second magnetic member 114 can be adjacent to each other.

[0092] In some embodiments, Figure 7 As shown, the detection layer 110 also includes a cantilever 115 connecting the first magnetic member 111 and the second magnetic member 114. By setting the cantilever 115 to connect the first magnetic member 111 and the second magnetic member 114, the first magnetic member 111 and the second magnetic member 114 are connected as a whole to prevent the first magnetic member 111 and the second magnetic member 114 from moving relative to each other.

[0093] In some embodiments, Figure 7 As shown, a through hole 1151 is provided on the cantilever 115 .

[0094] In some embodiments, Figure 7 As shown, the first magnetic member 111 , the detection coil 112 , the reference coil 113 , and the second magnetic member 114 of the detection layer 110 are all coaxially arranged.

[0095] In some embodiments, Fig. 9 and Fig.10As shown, the corneal contact lens 100 includes a detection layer 110, a first magnetic member 111 is arranged on the detection layer 110, the detection layer 110 also includes a deformation sensor component 116 and a transmission module 117, the transmission module 117 is arranged in a preset edge area of ​​the detection layer 110, and the deformation sensor component 116 is located between the transmission module 117 and the first magnetic member 111; the detector 200 includes a processing module 250, the transmission module 117 is used to transmit the electrical signal of the deformation sensor component 116 under deformation to the processing module 250, and the processing module 250 calculates the intraocular pressure according to the electrical signal.

[0096] Specifically, Fig. 9 and Fig.10 As shown, the detection layer 110 further includes a second magnetic member 114, which is disposed in a preset edge region. The second magnetic member 114 is disposed in the preset edge region to prevent the outer ring of the corneal contact lens 100 from warping.

[0097] Specifically, Fig. 9 and Fig.10 As shown, the detection layer 110 further includes a cantilever 115 connecting the first magnetic member 111 and the second magnetic member 114. By providing the cantilever 115, the first magnetic member 111 and the second magnetic member 114 are prevented from moving relative to each other.

[0098] It should be noted that the transmission module 117 and the second magnetic member 114 are both arranged in the edge region. In some embodiments, the transmission module 117 and the second magnetic member 114 are stacked one on top of the other. In some embodiments, the transmission module 117 and the second magnetic member 114 only need to be adjacent to each other.

[0099] like Fig. 9 and Fig.10 As shown, a detection layer 110 is provided on the corneal contact lens 100, and the first magnetic member 111, the second magnetic member 114, the cantilever 115, the deformation sensor assembly 116 and the transmission module 117 are all provided on the same layer. The first driving coil 211 is energized to generate a reset magnetic field, and the reset magnetic field drives the first magnetic member 111, thereby driving the corneal contact lens 100 to move, and adjusting the relative position of the corneal contact lens 100 and the first driving coil 211. When the corneal contact lens 100 is aligned with the first driving coil 211, the second driving coil 212 is energized to generate a pushing magnetic field, thereby causing the detection layer 110 to flatten the eyeball 300, and the transmission module 117 transmits the electrical signal generated by the deformation of the deformation sensor assembly 116 to the processing module 250, and the positioning module transmits the measured data to the processing module 250, and the processing module 250 calculates the intraocular pressure according to the received data.

[0100] In some embodiments, please refer back to Figure 6The contact lens 100 further includes a first film 120 and a second film 130, the detection layer 110 is sandwiched between the first film 120 and the second film 130, and the first film 120 is used to contact the eyeball 300. By setting the first film 120 and the second film 130 to fix the detection layer 110, when the contact lens 100 is worn, the first film 120 is directly in contact with the eyeball 300.

[0101] It should be noted that the first film 120 , the detection layer 110 and the second film 130 are all in arc shape and are adapted to the outer peripheral surface of the eyeball 300 .

[0102] In some embodiments, the stiffness of the second film 130 is greater than that of the first film 120. The first film 120 is in direct contact with the eyeball 300, and the second film 130 can be in contact with the eyelid, so compared with the second film 130, the stiffness of the second film 130 is greater than that of the first film 120, so that the second film 130 can play a supporting role, and the force and vibration of the detection layer 110 are as little affected as possible by the opening and closing of the eyelids. The first film 120 is in direct contact with the eyeball 300, and its stiffness is smaller, that is, it is more flexible, which reduces the influence of the force and vibration on the detection layer 110 on the one hand, and improves comfort on the other hand.

[0103] The present application also provides an intraocular pressure measurement method, using the above intraocular pressure measurement system to measure intraocular pressure, such as Figure 8 , Fig.10 ,as well as Fig.11 As shown, methods for measuring intraocular pressure include:

[0104] S1, wearing the contact lens 100 and the detector 200, determining whether the contact lens 100 and the detector 200 are aligned, if not, executing step S2, if aligned, executing the next step S3, wherein alignment means that the annular axis of the first magnetic member 111 of the contact lens 100 and the first driving coil 211 of the detector 200 are coaxial;

[0105] S2, energizing the first driving coil 211, so that the first driving coil 211 generates a reset magnetic field, and the reset magnetic field acts on the first magnetic member 111 to move the contact lens 100 relative to the magnetic field generating module 210, so as to adjust the relative position between the contact lens 100 and the magnetic field generating module 210, until the magnetic field generating module 210 and the contact lens 100 are coaxial, and then executing step S3;

[0106] S3, energizing the second driving coil 212, so that the pushing magnetic field acts on the first magnetic member 111, so that the corneal contact lens 100 is in the intraocular pressure measurement position to flatten the eyeball 300;

[0107] In the execution of step S2 and step S3, the current or voltage driving the first driving coil 211 and the second driving coil 212 are in opposite directions.

[0108] The intraocular pressure measurement method provided by the present application first wears the corneal contact lens 100 and the detector 200, and then determines whether the corneal contact lens 100 and the detector 200 are aligned. If they are not aligned, the relative positions of the corneal contact lens 100 and the detector 200 need to be adjusted, and the first drive coil 211 is energized to generate a reset magnetic field to drive the corneal contact lens 100 to move relative to the detector 200 until the two are aligned; if the two are aligned, the second drive coil 212 is energized to generate a pushing magnetic field, and the corneal contact lens 100 flattens the eyeball 300 under the action of the pushing magnetic field, so as to facilitate the calculation of intraocular pressure. The intraocular pressure measurement method provided by the present application first adjusts the relative positions of the corneal contact lens 100 and the detector 200, and then performs intraocular pressure measurement after the corneal contact lens 100 and the first drive coil 211 are aligned, thereby improving the accuracy of intraocular pressure measurement.

[0109] Furthermore, in some embodiments, in step S2, the conduction current value or voltage value of the first drive coil 211 is constant. After the first drive coil 211 is turned on for a preset time, it is determined whether the first drive coil 211 and the first magnetic member 111 are aligned. If so, step S3 is executed. If not, the process returns to the first drive coil 211 that has been turned on for a preset time and is determined again.

[0110] In a specific embodiment, the preset time is 2 seconds, the reset magnetic field size of the first drive coil 211 is rated, and the first drive coil 211 is turned on for 2 seconds and then stopped to detect whether it is aligned. If not aligned, the first drive coil 211 is turned on again for 2 seconds and then detected until it is aligned.

[0111] Further, in some embodiments, in step S2, S2 includes:

[0112] S21, the magnitude of the conduction current value or voltage value of the first drive coil 211 is determined according to the distance between the first drive coil 211 and the first magnetic member 111, and the conduction current value or voltage value of the first drive coil 211 is greater than a preset threshold value, wherein the preset threshold value is a minimum current value or a minimum voltage value that drives the first magnetic member to move;

[0113] S22, after the first drive coil 211 is turned on for a preset time, determine whether the first drive coil 211 and the first magnetic member 111 are aligned. If so, execute step S3. If not, return to the first drive coil 211 that is turned on for a preset time and determine again.

[0114] The reset magnetic field of the first drive coil 211 is not rated. The reset magnetic field is controlled according to the offset result. For example, if the offset is large, the reset magnetic field will be large. The reset magnetic field will be reduced according to the decrease of the offset, but it cannot be less than the set threshold. The reset magnetic field is applied for the same duration each time, for example, 2 seconds, until alignment.

[0115] Further, in some embodiments, in step S2, S2 includes:

[0116] S21, the conduction current value or voltage value of the first driving coil 211 is constant;

[0117] S22, after the first drive coil 211 is turned on for a certain period of time, determine whether the first drive coil 211 and the first magnetic member 111 are aligned, if so, execute step S3, if not, return to turn on the first drive coil 211 again for a certain period of time and then determine again;

[0118] In S21 and S22 , the conduction time of the first driving coil 211 is determined according to the magnitude of the offset result of the first driving coil 211 and the first magnetic member 111 detected at a preset time.

[0119] The reset magnetic field size of the first drive coil 211 is rated, and then the reset magnetic field is applied at intervals for resetting. The time for each application of the reset magnetic field is controlled according to the size of the detected offset result. For example, if the detected offset is large, the reset magnetic field time given will be longer, such as 3 seconds. Then, as the offset result decreases, the reset magnetic field time will be reduced accordingly, but it cannot be less than a preset threshold, such as 1 second; until alignment.

[0120] Further, in some embodiments, in step S3, the conduction current value or voltage value of the second drive coil 212 is gradually increased to increase the size of the pushing magnetic field until the first magnetic member 111 flattens the eyeball. The present application is to flatten the eyeball 300, gradually increasing the size of the pushing magnetic field generated by the second drive coil 212 until the eyeball 300 is flattened. Here, it is determined whether flattening is achieved by reading the coil. When flattened, the intraocular pressure is calculated by the size of the pushing magnetic field. The principle of intraocular pressure calculation here is the relationship established with the size of the pushing magnetic field, so that when flattened to the same state, people with different intraocular pressures require different magnetic field sizes, so that the size of the intraocular pressure can be corresponded to the size of the magnetic field.

[0121] Furthermore, in some embodiments, in step S3, the conduction current value or voltage value of the second drive coil 212 is constant, so that the size of the pushing magnetic field is constant. Under the action of the same pushing magnetic field, the intraocular pressure is determined according to the change in the distance between the detection coil 112 and the reference coil 113. Without using the flattening method, a rated magnetic field thrust can be used. Under the same thrust, after the eyeball 300 of a person with different intraocular pressure is pressed, the change in the distance between the detection coil 112 and the reference coil 113 obtained by the reading coil is different. The greater the intraocular pressure, the smaller the change in the distance, and vice versa. Therefore, the size of the intraocular pressure can be determined by the relationship between the distance change and the intraocular pressure.

[0122] In the above embodiment, the first driving coil 211 is used for alignment, and the second driving coil 212 is used for pushing.

[0123] In some embodiments, the first driving coil 211 may be used for alignment, and the first driving coil 211 may also be used for pushing.

[0124] In some embodiments, the first drive coil 211 is used for alignment, and the first drive coil 211 and the second drive coil 212 are used for pushing at the same time. It is understandable that the specific functions of the first drive coil 211 and the second drive coil 212 are determined according to actual operation requirements.

[0125] Further, in some embodiments, when executing step S2, when the data measured by the multiple positioning sensors 220 of the positioning module are the same, it is determined that the first driving coil 211 and the contact lens 100 are coaxial. When the relative positions of the contact lens 100 and the detector 200 are adjusted, if the data measured by the multiple positioning sensors 220 are consistent, it means that the magnetic field generating module 210 and the contact lens 100 are coaxial, that is, the magnetic field generating module 210 and the contact lens 100 are aligned.

[0126] In some embodiments, before executing step S3, the processing module 250 adjusts the input current or input voltage of the second driving coil 212 according to the distance between the first magnetic member 111 and the first driving coil 211. The processing module 250 processes the electrical signal of the relative position of the contact lens 100 and the detector 200 transmitted by the positioning sensor 220, and then adjusts the input current or input voltage of the second driving coil 212 so that it can generate an equal thrust to form a suitable pushing magnetic field.

[0127] It should be noted that in the field of intraocular pressure measurement technology, there is a table corresponding to the input current / voltage and the distance between the magnetic field generating module 210 and the corneal contact lens 100. After the distance between the first magnetic component 111 and the first driving coil 211 is measured, the input current or input voltage of the second driving coil 212 corresponding to the distance can be found by looking up the table.

[0128] In some embodiments, Figure 8 As shown, in step S3, after the corneal contact lens 100 flattens the eyeball 300, a high-frequency signal is generated by the reading coil of the detector 200, so that the detection coil 112 and the reference coil 113 resonate, and the reading coil obtains different resonance signals when the detection coil 112 and the reference coil 113 resonate respectively, and the reading coil transmits the above-mentioned different resonance signals to the processing module 250 of the detector 200, and the processing module 250 calculates the intraocular pressure based on the received data.

[0129] In some embodiments, Fig.10 As shown, in step S3, after the corneal contact lens 100 flattens the eyeball 300, the transmission module 117 transmits the electrical signal generated by the deformation of the deformation sensor assembly 116 to the processing module 250, and the positioning module transmits the measured data to the processing module 250, and the processing module 250 calculates the intraocular pressure based on the received data.

[0130] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. 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 protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An intraocular pressure measurement system, characterized in that: The intraocular pressure measurement system comprises: A corneal contact lens (100) for contacting an eyeball (300), wherein the corneal contact lens (100) comprises a first magnetic member (111); The detector (200) comprises a magnetic field generating module (210), wherein the magnetic field generating module (210) comprises a first driving coil (211) and a second driving coil (212) which are coaxially arranged, wherein the radial dimension of the first driving coil (211) is smaller than the radial dimension of the second driving coil (212), and the first driving coil (211) and the second driving coil (212) are used to generate magnetic fields to act on the first magnetic member (111) respectively.

2. The intraocular pressure measurement system according to claim 1, characterized in that: The detector (200) comprises a positioning module, wherein the positioning module comprises a positioning sensor (220) mounted on the magnetic field generating module (210), and the positioning sensor (220) is used to detect whether the first magnetic member (111) is aligned with the first driving coil (211).

3. The intraocular pressure measurement system according to claim 2, characterized in that: A plurality of the positioning sensors (220) are provided, and the plurality of positioning sensors (220) are arranged around the circumference of the magnetic field generating module (210).

4. The intraocular pressure measurement system according to claim 2, characterized in that: The positioning module further comprises a reference sensor (230) mounted on the detector (200), wherein the reference sensor (230) is used to calibrate the positioning sensor (220).

5. The intraocular pressure measurement system according to claim 1, characterized in that: The first magnetic member (111) comprises a ring-shaped magnet.

6. The intraocular pressure measurement system according to claim 1, characterized in that: The corneal contact lens (100) comprises a detection layer (110), the first magnetic member (111) is arranged on the detection layer (110), the detection layer (110) further comprises a detection coil (112) and a reference coil (113), the detection coil (112) is arranged on the first magnetic member (111), and the reference coil (113) is arranged in a preset edge area of ​​the detection layer (110); The detector (200) comprises a processing module (250) and a reading coil which are communicatively connected, wherein the reading coil is used to generate a reading signal so as to achieve resonance with the detection coil (112) and the reference coil (113), respectively, to obtain resonant electrical signals, and transmit each resonant signal to the processing module (250) for intraocular pressure calculation.

7. The intraocular pressure measurement system according to claim 6, characterized in that: The detection layer (110) further comprises a second magnetic member (114), wherein the second magnetic member (114) is arranged in the preset edge region.

8. The intraocular pressure measurement system according to claim 6, characterized in that: The corneal contact lens (100) further comprises a first film (120) and a second film (130), the detection layer (110) is sandwiched between the first film (120) and the second film (130), and the first film (120) is used to contact the eyeball (300).

9. The intraocular pressure measurement system according to claim 8, characterized in that: The second film (130) has a stiffness greater than that of the first film (120).

10. The intraocular pressure measurement system according to claim 1, characterized in that: The corneal contact lens (100) comprises a detection layer (110), the first magnetic member (111) is arranged on the detection layer (110), the detection layer (110) further comprises a deformation sensor component (116) and a transmission module (117), the transmission module (117) is arranged in a preset edge area of ​​the detection layer (110), and the deformation sensor component (116) is located between the first magnetic member (111) and the transmission module (117); The detector (200) comprises a processing module (250), the transmission module (117) is used to transmit the electrical signal of the deformation sensor component (116) under deformation to the processing module (250), and the processing module (250) calculates the intraocular pressure according to the electrical signal.

11. The intraocular pressure measurement system according to claim 1, characterized in that: The detector (200) comprises a body (240), and the magnetic field generating module (210) is installed on the body (240); The main body (240) is in the shape of a glasses frame or an eye mask.

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