Refractive surgery preoperative screening and postoperative prognosis device based on cornea biomechanical parameters

Abstract

The invention relates to the technical field of preoperative screening and postoperative prognosis evaluation of refractive surgery, and discloses a preoperative screening and postoperative prognosis device of refractive surgery based on cornea biomechanical parameters, comprising a base and a shell fixedly mounted on the upper surface of the base; the testing device is arranged in the shell and is used for measuring and analyzing biomechanical parameters of the cornea; the eye movement tracking camera is installed on the testing device and used for tracking the eyeball position of the patient in real time in the detection process; according to the device, cornea biomechanical parameters serve as core detection indexes, high-risk patients with normal forms but biomechanical abnormalities can be accurately recognized, traditional screening blind areas are filled up, and the risk of postoperative complications is reduced; an individualized evaluation report can be generated, a basis is provided for an individualized operation scheme, and precise medical treatment is assisted; and through multiple structures, the detection accuracy is guaranteed, the operation is simplified, the disinfection is standardized, the detection reliability and convenience are considered, and powerful support is provided for screening and prognosis evaluation of refractive surgery.

Description

Technical Field

[0001] This invention relates to the field of preoperative screening and postoperative prognosis assessment for refractive surgery, specifically to a device for preoperative screening and postoperative prognosis assessment of refractive surgery based on corneal biomechanical parameters. Background Technology

[0002] Refractive surgery, especially corneal laser surgery (such as LASIK and SMILE), has become a routine method for correcting myopia, hyperopia, and astigmatism. The safety and long-term stability of the surgery are core concerns for both doctors and patients. The success of the surgery depends not only on excellent surgical technique but also on comprehensive and accurate preoperative screening and evaluation.

[0003] Currently, preoperative screening systems for refractive surgery mainly rely on the detection of corneal morphological parameters. Changes in the biomechanical properties of the cornea are often an early manifestation of structural weakening. These changes may precede visible morphological changes. A patient with "normal" corneal thickness and topography may already have abnormal corneal biomechanical strength. If surgery is performed on such patients, the cutting of corneal tissue will further weaken its structural strength, greatly increasing the risk of serious postoperative complications such as iatrogenic corneal bulging and keratoconus. Existing morphology-based screening methods are unable to detect such "biomechanically abnormal" corneas, constituting a blind spot and the biggest hidden danger in the current preoperative safety screening system. Therefore, we propose a preoperative screening and postoperative prognosis device for refractive surgery based on corneal biomechanical parameters to solve the above-mentioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters. This solves the problem that existing preoperative screening for refractive surgery relies on corneal morphological parameters, making it difficult to detect corneas that are "morphologically normal but biomechanically abnormal," which can easily lead to postoperative complications such as iatrogenic corneal bulging and keratoconus. At the same time, it also solves the problems of insufficient detection accuracy, complex operation, and non-standard sterilization of traditional equipment, which affect the reliability and efficiency of assessment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters, including a base;

[0006] The housing is fixedly mounted on the upper surface of the base;

[0007] The testing device, housed within the housing, is used to measure and analyze the biomechanical parameters of the cornea;

[0008] An eye-tracking camera, mounted on the testing device, is used to track the position of the patient's eyeballs in real time during the testing process;

[0009] A touch screen is fixedly mounted on the upper surface of the base for displaying test data, biomechanical parameter analysis graphs, and screening and prognosis assessment results;

[0010] An alarm, fixedly installed on the base near the touch screen, is used to issue an audible and visual warning when eye movement exceeds a threshold.

[0011] An adaptive adjustment mechanism is provided on the housing, and the testing device is connected to the adaptive adjustment mechanism for adjusting the relative position of the testing device and the patient's eye according to the patient's eye position;

[0012] A disinfection mechanism, installed on the housing, is used to disinfect components that come into contact with or are adjacent to the patient before and after testing;

[0013] An adjustable support mechanism, integrated into the base and housing, is used to support and stabilize the patient's head.

[0014] Preferably, the housing has a mounting base inside, the testing device is mounted on the mounting base, and the testing device integrates a real-time positioning and observation module, which is configured as follows:

[0015] The relative positional relationship between the detection component of the testing device and the patient's eyeball is displayed in real time on the touch screen.

[0016] The positional relationship diagram provides visual alignment guidance to help operators achieve accurate positioning.

[0017] Preferably, the eye-tracking camera is communicatively connected to the central control unit of the testing device, which is configured as follows:

[0018] During the biomechanical parameter measurement process of the test device, the video stream from the eye-tracking camera is analyzed in real time to monitor eye movement;

[0019] When the detected eye movement amplitude or speed exceeds the preset safety threshold, a signal is immediately sent to the alarm to trigger an interruption warning and a prompt is displayed on the touch screen indicating that eye movement affects the detection results.

[0020] Preferably, the testing apparatus includes:

[0021] The outer casing is mounted on the mounting base;

[0022] The biomechanical stimulation module, installed on the front of the casing, is used to apply a controlled physical stimulus to the cornea;

[0023] A high-speed optical response capture module, mounted on the front of the housing, is used to record the dynamic deformation process of the cornea under the physical stimulus.

[0024] The signal processing and parameter calculation module, installed on the rear of the casing, is used to analyze the captured deformation data and calculate a set of corneal biomechanical parameters.

[0025] Preferably, the biomechanical excitation module is a non-contact pneumatic exciter capable of emitting a controllable pulsed airflow; the high-speed optical response capture module includes a Plassey multi-disc projection system and a high-speed camera;

[0026] The signal processing and parameter calculation module analyzes the dynamic deformation process and calculates the following parameters: corneal hysteresis, corneal resistance factor, and deformation amplitude ratio.

[0027] Preferably, the testing device further includes a risk assessment module, which is used to compare the calculated biomechanical parameters with a preset risk model to generate an individualized preoperative risk grading or postoperative prognosis assessment report.

[0028] Preferably, the controllable pulsed airflow generated by the biomechanical excitation module is divided into two paths by an airflow distributor:

[0029] Main airflow path: emitted through the excitation window, acting on the patient's cornea;

[0030] Branch airflow path: Its outlet faces the lens assembly of the high-speed optical response capture module and is used to blow gas onto the lens surface to prevent the lens from fogging.

[0031] Preferably, the adaptive adjustment mechanism includes an annular movable cavity formed inside one side of the housing, and an adjustment disk is provided inside the movable cavity. Electromagnetic columns distributed in an annular pattern are embedded in one side of the adjustment disk. An electromagnet ring with an annular structure is fixedly installed inside the annular movable cavity of the housing. An adjustment handle is fixedly installed on one side of the adjustment disk, and a control button is installed on the adjustment handle. The electromagnet columns and the electromagnet ring have irregularly shaped magnetic poles. The testing device is installed on the adjustment disk.

[0032] Preferably, the adjustable support mechanism includes a rectangular groove formed on the upper surface of the base, with symmetrically arranged guide rods inside the rectangular groove, and a movable block inside the rectangular groove. The movable block slides on the surface of the guide rods through a circular hole. The guide rods are fixedly connected to the base. A telescopic push rod is fixedly installed on the upper surface of the movable block. A chin rest is fixedly installed at the output end of the telescopic push rod. A locking pin is slidably installed on the movable block through a sliding hole. A second spring is wound around the surface of the locking pin. The two ends of the second spring are fixedly connected to the locking pin and the movable block, respectively. Two sets of locking grooves adapted to the locking pin are formed on the base. A forehead rest plate is fixedly installed on one side of the open end of the housing.

[0033] Preferably, the disinfection mechanism includes a support plate fixed to both sides of the housing, and a protruding plate is fixed to one side of the support plate;

[0034] It also includes a disinfection cover, and a limiting groove adapted to the convex plate is provided on one side. The disinfection cover slides on the convex plate through the limiting groove. An ultraviolet lamp is fixedly installed on the inner side wall of the disinfection cover. A strip seat is fixedly installed on the top of the housing. A limiting pin is slidably installed on the strip seat through an opening. A first spring is wound around the surface of the limiting pin. The two ends of the first spring are fixedly connected to the strip seat and the limiting pin, respectively.

[0035] Beneficial effects

[0036] This invention provides a device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters. Compared with existing technologies, it has the following advantages:

[0037] This device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters uses corneal biomechanical parameters as the core of detection. Through non-contact pneumatic excitation and high-speed optical capture technology, it accurately acquires key parameters reflecting the structural strength of the cornea, such as corneal hysteresis and corneal resistance factor. Combined with the comparative analysis of the risk assessment module and the preset risk model, it can accurately identify high-risk patients who are "morphologically normal but biomechanically abnormal" and classify patients for preoperative risk. This design fills the blind spot of traditional morphological screening, excludes high-risk patients from the source, significantly reduces the probability of serious postoperative complications, and greatly improves the safety of refractive surgery.

[0038] The risk assessment module compares the patient's individualized corneal biomechanical parameters with a preset risk model to generate a personalized preoperative risk grading and postoperative prognosis assessment report. Since different patients have different corneal biomechanical characteristics, individualized assessment can accurately reflect each patient's corneal structural strength and surgical tolerance, providing a scientific basis for doctors to develop personalized surgical plans, while providing patients with more realistic postoperative recovery expectations, and helping to realize precision medicine in refractive surgery.

[0039] Through multi-dimensional design and humanized optimization, the accuracy of detection and ease of operation are improved, providing strong support for preoperative screening and postoperative prognosis assessment of refractive surgery. In terms of ensuring detection accuracy, the adjustable support mechanism can stabilize the patient's head by means of chin support height adjustment, left and right position locking function and forehead backrest limit, avoiding head shaking interference during the test.

[0040] The adaptive adjustment mechanism adopts a "manual adjustment + electromagnetic adsorption fixation" mode, which is simple to operate and precise in positioning, reducing the technical threshold for operators. Combined with the visual guidance of the real-time positioning and observation module, the position of the test device can be precisely adjusted to ensure perfect alignment between the detection component and the eye. The eye-tracking camera is linked with the central control unit and alarm to monitor eye movement in real time. Once an abnormality occurs, the detection is immediately interrupted and an alarm is triggered to prevent data deviation. The branch airflow path of the biomechanical excitation module continuously blows the lens, effectively preventing fog adhesion and ensuring that the high-speed camera clearly captures corneal deformation. Multiple links work together to ensure the authenticity and reliability of the test data.

[0041] The disinfection facility uses a combination of a sliding disinfection cover and an ultraviolet lamp to quickly disinfect contact parts after testing, thus avoiding cross-infection. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 This is a right view of the overall structure of the present invention;

[0044] Figure 3 This is a partial sectional view of the overall structure of the present invention;

[0045] Figure 4 This is a schematic diagram of the moving structure of the disinfection cover of the present invention.

[0046] In the diagram: 101, base; 102, housing; 103, mounting base; 104, testing device; 105, eye-tracking camera; 106, touch screen; 107, alarm; 2. Adaptive adjustment mechanism; 201, adjustment disc; 202, electromagnet column; 203, electromagnet ring; 204, adjustment handle; 205, control button; 3. Disinfection mechanism; 301, support plate; 302, disinfection cover; 303, strip seat; 304, limit pin; 305, first spring; 306, ultraviolet lamp; 307, convex plate; 4. Adjustable support mechanism; 401, chin rest; 402, telescopic push rod; 403, moving block; 404, guide rod; 405, locking pin; 406, second spring; 407, locking groove; 408, forehead rest plate. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figure 1-4 As shown:

[0049] A device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters, including a base 101;

[0050] The housing 102 is fixedly installed on the upper surface of the base 101;

[0051] The testing device 104, housed within the casing 102, is used to measure and analyze the biomechanical parameters of the cornea. The casing 102 contains a mounting base 103 on which the testing device 104 is mounted. The testing device 104 integrates a real-time positioning and observation module, which is configured as follows:

[0052] The relative positional relationship between the detection component of the testing device 104 and the patient's eyeball is displayed in real time on the touch screen 106;

[0053] The positional relationship diagram provides visual alignment guidance to assist operators in achieving precise positioning;

[0054] The testing device 104 includes:

[0055] The outer casing is mounted on the mounting base 103;

[0056] The biomechanical stimulation module, installed on the front of the casing, is used to apply a controlled physical stimulus to the cornea;

[0057] A high-speed optical response capture module, mounted on the front of the housing, is used to record the dynamic deformation process of the cornea under physical stimulation;

[0058] The signal processing and parameter calculation module, installed on the rear of the casing, is used to analyze the captured deformation data and calculate a set of corneal biomechanical parameters.

[0059] The biomechanical excitation module is a non-contact pneumatic actuator capable of emitting a controllable pulse of airflow; the high-speed optical response capture module includes a Plassey multi-disc projection system and a high-speed camera.

[0060] The signal processing and parameter calculation module calculates the following parameters by analyzing the dynamic deformation process: corneal hysteresis, corneal resistance factor, and deformation amplitude ratio.

[0061] The testing device 104 also includes a risk assessment module, which compares the calculated biomechanical parameters with a preset risk model to generate an individualized preoperative risk grading or postoperative prognosis assessment report.

[0062] The controllable pulsed airflow generated by the biomechanical excitation module is split into two paths by an airflow distributor:

[0063] Main airflow path: emitted through the excitation window, acting on the patient's cornea;

[0064] Branch airflow path: Its outlet faces the lens assembly of the high-speed optical response capture module, and is used to blow gas onto the lens surface to prevent the lens from fogging.

[0065] An eye-tracking camera 105, mounted on the testing device 104, is used to track the patient's eye position in real time during the testing process. The eye-tracking camera 105 is communicatively connected to the central control unit of the testing device 104, which is configured as follows:

[0066] During the biomechanical parameter measurement process in the testing device 104, the video stream of the eye-tracking camera 105 is analyzed in real time to monitor the movement of the eyeball.

[0067] When the detected eye movement amplitude or speed exceeds the preset safety threshold, a signal is immediately sent to the alarm 107 to trigger an alarm to interrupt the measurement, and a prompt is displayed on the touch screen 106 that the eye movement has affected the detection results;

[0068] The touch screen 106 is fixedly installed on the upper surface of the base 101 and is used to display test data, biomechanical parameter analysis graphs and screening and prognosis assessment results;

[0069] Alarm 107 is fixedly mounted on the base 101 near the touch display screen 106 and is used to issue an audible and visual warning when eye movement is detected to exceed a threshold.

[0070] An adaptive adjustment mechanism 2 is provided on the housing 102, and the testing device 104 is connected to the adaptive adjustment mechanism 2. It is used to adjust the relative position of the testing device 104 and the patient's eye according to the patient's eye position. The adaptive adjustment mechanism 2 includes an annular movable cavity opened on one side of the housing 102, and an adjustment disk 201 is provided in the movable cavity. An electromagnet column 202 with an annular and equidistant distribution is embedded in one side of the adjustment disk 201. An electromagnet ring 203 with an annular structure is fixedly installed inside the annular movable cavity of the housing 102. An adjustment handle 204 is fixedly installed on one side of the adjustment disk 201. A control button 205 is installed on the adjustment handle 204. The electromagnet column 202 and the electromagnet ring 203 have irregular magnetic poles. The testing device 104 is installed on the adjustment disk 201.

[0071] The disinfection mechanism 3 is installed on the housing 102 and is used to disinfect the parts that come into contact with or are adjacent to the patient before and after the test. The disinfection mechanism 3 includes a support plate 301 fixed on both sides of the housing 102, and a protruding plate 307 is fixed on one side of the support plate 301.

[0072] It also includes a disinfection cover 302, and a limiting groove adapted to the protruding plate 307 is provided on one side. The disinfection cover 302 slides on the protruding plate 307 through the limiting groove. An ultraviolet lamp 306 is fixedly installed on the inner wall of the disinfection cover 302. A strip seat 303 is fixedly installed on the top of the housing 102. A limiting pin 304 is slidably installed on the strip seat 303 through the opening of the moving hole. A first spring 305 is wound around the surface of the limiting pin 304. The two ends of the first spring 305 are fixedly connected to the strip seat 303 and the limiting pin 304 respectively.

[0073] An adjustable support mechanism 4, integrated on the base 101 and the housing 102, is used to support and stabilize the patient's head. The adjustable support mechanism 4 includes a rectangular groove on the upper surface of the base 101, and guide rods 404 arranged symmetrically in the rectangular groove. A movable block 403 is also provided in the rectangular groove. The movable block 403 slides on the surface of the guide rods 404 through a circular hole. The guide rods 404 and the base 101 are fixedly connected. A telescopic push rod 402 is fixedly installed on the upper surface of the movable block 403. A chin rest 401 is fixedly installed at the output end of the telescopic push rod 402. A locking pin 405 is slidably installed on the movable block 403 through a sliding hole. A second spring 406 is wound around the surface of the locking pin 405. The two ends of the second spring 406 are fixedly connected to the locking pin 405 and the movable block 403, respectively. Two sets of locking grooves 407 adapted to the locking pin 405 are provided on the base 101. A forehead rest plate 408 is fixedly installed on one side of the open end of the housing 102.

[0074] In this implementation plan: When using the refractive surgery preoperative screening and postoperative prognosis device based on corneal biomechanical parameters, the patient needs to place his chin on the chin rest 401 of the adjustable support mechanism 4 and his forehead against the forehead support plate 408 at the opening of the shell 102 to achieve initial head positioning.

[0075] If it is necessary to switch between left and right eye testing, the operator can adjust the position by adjusting the moving block 403: pull the locking pin 405 outward, the locking pin 405 compresses the second spring 406 and disengages from the current locking groove 407, at which time the moving block 403 can slide left and right along the guide rod 404 in the rectangular groove of the base 101. When it slides to the position of the matching eye, release the locking pin 405, the second spring 406 resets and pushes the locking pin 405 into the corresponding locking groove 407, thus fixing the left and right positions of the chin rest 401. By adjusting the extension length of the telescopic push rod 402, the height of the chin rest 401 can be adjusted so that the patient's eye and the detection component of the testing device 104 are at approximately the same horizontal level, ensuring the accuracy of subsequent alignment.

[0076] The operator holds the adjustment handle 204 of the adaptive adjustment mechanism 2 and observes the relative position relationship diagram between the detection component of the test device 104 and the patient's eyeball in real time through the touch screen 106. The diagram is generated by the real-time positioning and observation module of the test device and provides visual alignment guidance.

[0077] Guided by the position, manually push the adjustment handle 204 to drive the adjustment plate 201 to rotate or move in the annular movable cavity inside the housing 102, thereby adjusting the spatial position of the test device 104 installed on the adjustment plate 201.

[0078] Once the testing device 104 is precisely aligned with the patient's eye, press the control button 205 on the adjustment handle 204 to energize the electromagnet column 202 on the adjustment plate 201 and the electromagnet ring 203 in the annular movable cavity of the housing 102. Since the two are irregularly shaped magnetic poles, they generate an attraction force after being energized, which fixes the adjustment plate 201 and locks the position of the testing device 104 to prevent displacement during the testing process.

[0079] The operator starts the testing device 104 via the touch screen 106. The biomechanical excitation module of the testing device, the non-contact pneumatic exciter, begins to work, generating a controllable pulsed airflow. This pulsed airflow is divided into two paths by the airflow distributor: the main airflow is ejected through the excitation window and precisely acts on the patient's cornea, applying controllable physical stimulation to the cornea; the outlet of the branch airflow is directed towards the lens assembly of the high-speed optical response capture module, continuously blowing gas onto the lens surface to prevent the gas generated by the patient's breathing from causing the lens to fog up, thus ensuring the clarity of the optical test.

[0080] The high-speed optical response capture module is activated simultaneously. Its Plassey multi-disc projection system projects a specific pattern onto the cornea. The high-speed camera records the dynamic deformation process of the cornea under the physical stimulation of pulsed airflow in real time, forming a continuous video stream. The signal processing and parameter calculation module receives the deformation data captured by the high-speed camera, performs noise reduction, filtering and other preprocessing on the data, and calculates the core biomechanical parameters of the cornea by analyzing the dynamic deformation process, including corneal hysteresis, corneal resistance factor and deformation amplitude ratio.

[0081] Throughout the testing process, the eye-tracking camera 105 continuously captures video of the patient's eye movements and transmits the video stream to the central control unit of the testing device 104. The central control unit analyzes the video stream in real time, monitoring the amplitude and speed of eye movement. If the amplitude or speed of eye movement exceeds a preset safety threshold, a signal is immediately sent to the alarm 107, triggering an audible and visual warning. Simultaneously, the current measurement process is interrupted, and a message "Eye movement affects test results" is displayed on the touch screen 106, reminding the operator and patient to adjust their state and retest. If the eye remains stable, the test continues until data acquisition is complete.

[0082] The risk assessment module of the testing device 104 calls the preset risk model and compares the calculated corneal biomechanical parameters, such as corneal hysteresis, corneal resistance factor, and deformation amplitude ratio, with the standard parameter range and risk threshold in the model one by one. Based on the comparison results, it generates an individualized preoperative risk classification, such as low risk, medium risk, high risk, or postoperative prognosis assessment report, to clarify whether the patient is suitable for refractive surgery, the risk of possible surgical complications, and the expected effect of postoperative corneal recovery.

[0083] The touchscreen display 106 simultaneously displays test data, biomechanical parameter analysis graphs such as corneal deformation curves, parameter value comparison charts, and the final screening and prognostic assessment results, facilitating viewing by operators and explanation to patients. Simultaneously, the device automatically stores test data and assessment reports for easy review and medical record archiving.

[0084] After the test is completed, the patient leaves the device. The operator pulls the limiting pin 304 of the disinfection mechanism 3. The limiting pin 304 compresses the first spring 305 and releases its obstruction to the disinfection cover 302, pushing the disinfection cover 302 so that it slides along the protruding plate 307 on the support plate 301 through the limiting slide groove until the disinfection cover 302 completely covers the chin rest 401, forehead rest plate 408 and other parts of the adjustable support mechanism 4 that come into contact with or are adjacent to the patient. The operator starts the disinfection program through the touch screen 106. The ultraviolet lamp 306 installed on the inner wall of the disinfection cover 302 lights up and performs ultraviolet disinfection on the covered parts for a specified time to kill residual bacteria, viruses and other microorganisms and avoid cross-infection.

[0085] After disinfection, turn off the ultraviolet lamp 306, pull the disinfection cover 302 in the opposite direction to reset it, release the limiting pin 304, and the first spring 305 will reset and push the limiting pin 304 back into the limiting structure of the disinfection cover 302, thus fixing the disinfection cover 302. At the same time, disconnect the power supply to the electromagnet column 202 and the electromagnet ring 203, release the locking pin 405 of the adjustable support mechanism 4, and reset the chin support 401 to its initial position to prepare for the next test.

[0086] This approach uses corneal biomechanical parameters as the core of detection. Through non-contact pneumatic excitation and high-speed optical capture technology, it accurately acquires key parameters reflecting corneal structural strength, such as corneal hysteresis and corneal resistance factor. Combined with the risk assessment module and the comparative analysis of the preset risk model, it can accurately identify high-risk patients with "normal morphology but abnormal biomechanics" and classify them for preoperative risk. This design fills the blind spot of traditional morphological screening, excludes high-risk patients from the source, significantly reduces the probability of serious postoperative complications, and greatly improves the safety of refractive surgery. The risk assessment module compares the patient's individualized corneal biomechanical parameters with the preset risk model to generate a personalized preoperative risk classification and postoperative prognosis assessment report. Different patients have different corneal biomechanical characteristics. Individualized assessment can accurately reflect the corneal structural strength and surgical tolerance of each patient, providing a scientific basis for doctors to formulate personalized surgical plans, while providing patients with more realistic postoperative recovery expectations, and helping to realize precision medicine in refractive surgery.

[0087] Through multi-dimensional design and human-centered optimization, the system achieves a dual improvement in detection accuracy and ease of operation, providing strong support for preoperative screening and postoperative prognosis assessment for refractive surgery. To ensure detection accuracy, the adjustable support mechanism 4, with its chin rest height adjustment, left and right position locking functions, and forehead support limiter, can stably fix the patient's head, avoiding interference from head shaking during the test. The adaptive adjustment mechanism 2, combined with the visual guidance of the real-time positioning and observation module, can precisely adjust the position of the testing device 104, ensuring perfect alignment between the detection component and the eye. The eye-tracking camera 105, in conjunction with the central control unit and alarm 107, monitors eye movement in real time, immediately interrupting the test and triggering an alarm in case of any abnormality, eliminating data deviation. The branched airflow path of the biomechanical excitation module continuously sweeps the lens, effectively preventing fogging and ensuring that the high-speed camera clearly captures corneal deformation. These multiple aspects work together to ensure the authenticity and reliability of the detection data. In terms of optimizing the user experience, the locking pin 405 of the adjustable support mechanism 4 works in conjunction with the second spring 406 to quickly adjust and lock the left and right positions of the chin rest, facilitating sequential testing of the left and right eyes without requiring patients to frequently adjust their posture; the adaptive adjustment mechanism 2 adopts a "manual adjustment + electromagnetic adsorption fixation" mode, which is simple to operate and has precise positioning, reducing the technical threshold for operators; the disinfection mechanism 3 combines a sliding disinfection cover 302 with an ultraviolet lamp 306 to quickly disinfect contact parts after testing, avoiding cross-infection; the touch display screen 106 integrates multiple functions, providing a user-friendly human-computer interaction and significantly improving the smoothness and efficiency of the testing process.

[0088] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters, characterized in that: Including the base (101); The housing (102) is fixedly installed on the upper surface of the base (101); The testing device (104), located inside the housing (102), is used to measure and analyze the biomechanical parameters of the cornea; An eye-tracking camera (105) is mounted on the testing device (104) to track the position of the patient's eyeballs in real time during the testing process; A touch screen (106) is fixedly installed on the upper surface of the base (101) for displaying test data, biomechanical parameter analysis graphs, and screening and prognosis assessment results; An alarm (107) is fixedly mounted on the base (101) on the side near the touch display screen (106) for issuing an audible and visual warning when eye movement is detected to exceed a threshold. An adaptive adjustment mechanism (2) is provided on the housing (102), and the test device (104) is connected to the adaptive adjustment mechanism (2) for adjusting the relative position of the test device (104) and the patient's eye according to the patient's eye position; A disinfection mechanism (3) is installed on the housing (102) for disinfecting components that come into contact with or are adjacent to the patient before and after testing; An adjustable support mechanism (4), integrated on the base (101) and the housing (102), is used to support and stabilize the patient's head.

2. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The housing (102) has a mounting base (103) inside, and the testing device (104) is mounted on the mounting base (103). The testing device (104) integrates a real-time positioning and observation module, which is configured as follows: The relative positional relationship between the detection component of the testing device (104) and the patient's eyeball is displayed in real time on the touch display screen (106); The positional relationship diagram provides visual alignment guidance to help operators achieve accurate positioning.

3. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The eye-tracking camera (105) is communicatively connected to the central control unit of the testing device (104), which is configured to: During the biomechanical parameter measurement process of the test device (104), the video stream of the eye-tracking camera (105) is analyzed in real time to monitor the movement of the eyeball; When the detected eye movement amplitude or speed exceeds the preset safety threshold, a signal is immediately sent to the alarm (107) to trigger an interruption warning and a prompt is displayed on the touch screen (106) indicating that the eye movement affects the detection results.

4. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 2, characterized in that: The testing device (104) includes: The outer casing is mounted on the mounting base (103); The biomechanical stimulation module, installed on the front of the casing, is used to apply a controlled physical stimulus to the cornea; A high-speed optical response capture module, mounted on the front of the housing, is used to record the dynamic deformation process of the cornea under the physical stimulus. The signal processing and parameter calculation module, installed on the rear of the casing, is used to analyze the captured deformation data and calculate a set of corneal biomechanical parameters.

5. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 4, characterized in that: The biomechanical excitation module is a non-contact pneumatic exciter capable of emitting a controllable pulsed airflow; the high-speed optical response capture module includes a Plassey multi-disc projection system and a high-speed camera; The signal processing and parameter calculation module analyzes the dynamic deformation process and calculates the following parameters: corneal hysteresis, corneal resistance factor, and deformation amplitude ratio.

6. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The testing device (104) also includes a risk assessment module, which is used to compare the calculated biomechanical parameters with a preset risk model to generate an individualized preoperative risk grading or postoperative prognosis assessment report.

7. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 5, characterized in that: The controllable pulsed airflow generated by the biomechanical excitation module is divided into two paths by an airflow distributor: Main airflow path: emitted through the excitation window, acting on the patient's cornea; Branch airflow path: Its outlet faces the lens assembly of the high-speed optical response capture module and is used to blow gas onto the lens surface to prevent the lens from fogging.

8. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The adaptive adjustment mechanism (2) includes an annular movable cavity opened on one side of the housing (102), and an adjustment plate (201) is provided in the movable cavity. Electromagnetic columns (202) are installed in an annular and equidistant arrangement on one side of the adjustment plate (201). An electromagnetic ring (203) with an annular structure is fixedly installed inside the annular movable cavity of the housing (102). An adjustment handle (204) is fixedly installed on one side of the adjustment plate (201). A control button (205) is installed on the adjustment handle (204). The test device (104) is installed on the adjustment plate (201).

9. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The adjustable support mechanism (4) includes a rectangular groove on the upper surface of the base (101), and guide rods (404) arranged symmetrically in the rectangular groove. A moving block (403) is also provided in the rectangular groove. A telescopic push rod (402) is fixedly installed on the upper surface of the moving block (403). A chin rest (401) is fixedly installed at the output end of the telescopic push rod (402). A locking pin (405) is slidably installed on the moving block (403) through a sliding hole. A second spring (406) is wound around the surface of the locking pin (405). Two sets of locking grooves (407) adapted to the locking pin (405) are opened on the base (101). A forehead support plate (408) is fixedly installed on one side of the open end of the housing (102).

10. The device for preoperative screening and postoperative prognosis of refractive surgery based on corneal biomechanical parameters according to claim 1, characterized in that: The disinfection mechanism (3) includes a support plate (301) fixed on both sides of the housing (102), and a protruding plate (307) is fixed on one side of the support plate (301). It also includes a disinfection cover (302), which slides on the protruding plate (307) through a limiting groove. An ultraviolet lamp (306) is fixedly installed on the inner side wall of the disinfection cover (302). A strip seat (303) is fixedly installed on the top of the housing (102). A limiting pin (304) is slidably installed on the strip seat (303) through an opening. A first spring (305) is wound around the surface of the limiting pin (304).

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