A slit lamp control system
The slit lamp control system automatically adjusts the light intensity, slit width and lighting angle, solving the problems of slow adjustment speed and complex operation of existing slit lamp microscopes, and achieving fast and accurate image clarity adjustment and improved diagnostic efficiency.
Patent Information
- Application Number
- CN202210041297.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-01-13
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2042-01-13
AI Technical Summary
During the focusing process, existing slit lamp microscopes have slow adjustment speed, high operator experience requirements, and high manual labor pressure, making it difficult to achieve precise image clarity adjustment.
A slit lamp control system is used, including a recognition module, a detection module, an image processing module and a control module. By identifying the position of the eye, the light intensity, slit width and lighting angle of the slit lamp are automatically adjusted until the image clarity reaches the preset standard.
It realizes fast and accurate image clarity adjustment, improves diagnostic efficiency, reduces the operator's labor intensity and experience requirements, and has a simple structure.
Smart Images

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Abstract
Description
Technical Field
[0001] The invention relates to a control system of a slit lamp. Background Art
[0002] The slit lamp is an important medical instrument for detecting the structure of the human eye. It illuminates the eye through the slit formed by the light. The slit shines on the eye to form an optical section, which can be used to observe the health of various parts of the eye. It is widely used in the detection and diagnosis of the cornea, iris, lens, anterior chamber, glaucoma, and cataracts, and plays a particularly important role in the early diagnosis of eye diseases.
[0003] The slit lamp examination uses a concentrated light source to illuminate the examination area, facilitating a strong contrast with the dark surrounding area. Combined with a binocular microscope magnifier, it not only allows superficial lesions to be observed very clearly, but also utilizes fine bands of light to pass through the transparent tissues of various parts of the eyeball, forming a series of "optical sections" that clearly display the different layers of the refractive media and even tiny lesions in deep tissues. Due to the different eye characteristics of different patients, doctors generally need to focus the fundus camera when using a slit lamp microscope to photograph the human eye according to the specific eye conditions of different patients. Existing slit lamp microscopes mostly use manual methods to adjust the position of the fundus camera during the focusing process. However, the manual adjustment method has problems such as slow adjustment speed, high operator experience requirements, and high manual labor pressure. Summary of the Invention
[0004] In view of the defects of the prior art, the present invention provides a control system for a slit lamp to solve the problem that the image clarity cannot be accurately adjusted by manually operating the slit lamp.
[0005] In order to achieve the above object, the present invention provides a slit lamp control system, which includes:
[0006] Slit lamp, used to provide light and image the eye;
[0007] Mobile platform, used to move the slit lamp to the designated position;
[0008] An identification module, used to identify the position of the eye to be tested;
[0009] A detection module, connected to the slit lamp, for detecting data of the eye to be tested;
[0010] an image processing module, configured to process images of the eye; and
[0011] Control module, data connection between the control module and the slit lamp, mobile platform, recognition module, detection module, and image processing module;
[0012] The control module performs the following operations:
[0013] 1) Determine the movement direction of the mobile platform based on the eye position detected by the recognition module;
[0014] 2) The control detection module detects the data of the eye to be tested and transmits the data to the image processing module for processing. The control module calculates the image clarity fed back by the processing module and adjusts the light intensity, slit width and lighting angle of the slit lamp to make the image processing clarity meet the preset standard.
[0015] As another specific embodiment of the present invention, in step 1), a three-dimensional coordinate system L(0, 0, 0) is established with the eyepiece of the slit lamp as the origin, a facial image is obtained by the recognition module and uploaded to the control module, the control module identifies the eyes and obtains the eye coordinates E(Xe, Ye, Ze), sets the position compensation parameter wj, and the control module controls the movement of the mobile platform to move the eyepiece of the slit lamp from the coordinates L(0, 0, 0) to E(Xe', Ye', Ze'), where |Xe'-Xe|≤wj, |Ye'-Ye|≤wj, and |Ze'-Ze|≤wj.
[0016] As another specific embodiment of the present invention, the control module selects different slit widths, illumination angles, and illumination intensities according to different eye detection locations, and establishes a relationship matrix M(Ai, Bi, Ci, Di, i=1, 2, 3), where Ai represents the eye detection location, Bi represents the slit width, Ci represents the illumination angle, and Di represents the illumination intensities. The specific implementation is as follows:
[0017] When the eye detection part A1 is the front of the anterior capsule of the lens, the lens, the cornea, and the retina, the control module selects the first slit width B1 as the slit width of the slit lamp, selects the first illumination angle C1 as the illumination angle of the slit lamp, and selects the first light luminance D1 as the light luminance of the slit lamp;
[0018] When the eye detection part A2 is the side of the anterior capsule of the lens or the posterior capsule of the lens, the control module selects the second slit width B2 as the slit width of the slit lamp, selects the second illumination angle C2 as the illumination angle of the slit lamp, and selects the second light brightness D2 as the light brightness of the slit lamp;
[0019] When the eye detection part A3 is the anterior chamber flare and vitreous body, the control module selects the third slit width B3 as the slit width of the slit lamp, selects the third illumination angle C3 as the illumination angle of the slit lamp, and selects the third light brightness D3 as the light brightness of the slit lamp.
[0020] As another specific embodiment of the present invention, the control module adjusts the slit width of the slit lamp according to the real-time eye refractive power Q' and axial length F' obtained by the detection module, and is specifically implemented as follows:
[0021] Establish standard refractive power Q and standard axial length F;
[0022] Compare the standard refractive power Q with the real-time eye refractive power Q' obtained by the detection module:
[0023] If the real-time eye refractive power Q' is greater than the standard refractive power Q, the control module adjusts the slit width to shorten to Bit, Bit = Bi × (1 - (Q' - Q) / Q × (F' - F) / F), i = 1, 2, 3;
[0024] If the real-time eye refractive power Q' is less than or equal to the preset standard refractive power Q, the control module adjusts the slit width to increase to Bit, Bit = Bi × (1 + (Q-Q') / Q × (F-F') / F, i = 1, 2, 3.
[0025] As another specific embodiment of the present invention, the control module adjusts the illumination angle of the slit lamp according to the eye coordinates P (Xp, Yp, Zp) obtained by the detection module, and the specific implementation is as follows:
[0026] Establish the standard eye position offset distance parameter T;
[0027] The control module calculates the real-time eye position offset distance parameter T' based on the eye position coordinate P obtained by the detection module.
[0028] If the real-time eye position offset distance T' is not less than the standard eye position offset distance T, the control module does not adjust the illumination angle;
[0029] If the real-time eye offset distance T' is less than the standard eye offset distance T, the control module adjusts the illumination angle to Cit, where Cit = Ci*(1-(T'-T) / T), i = 1, 2, 3.
[0030] As another specific embodiment of the present invention, the control module adjusts the slit lamp light intensity according to the real-time corneal curvature M' obtained by the detection module, and is specifically implemented as follows:
[0031] Establish standard corneal curvature M;
[0032] Compare the standard corneal curvature M with the real-time corneal curvature M' obtained by the detection module:
[0033] If the real-time corneal curvature M' is greater than the standard corneal curvature M, the control module reduces the light brightness to Dit, Dit = Di*(1-(M'-M) / M), i = 1, 2, 3;
[0034] If the real-time corneal curvature M' is less than or equal to the standard corneal curvature M, the control module increases the light brightness to Dit, where Dit=Di*(1+(M'-M) / M), i=1, 2, 3.
[0035] As another specific embodiment of the present invention, the image processing module divides the acquired image data into n image regions, collects real-time RGB image information of the eye in the n-th image region, and converts the RGB information of the n-th region image into a grayscale value In:
[0036] In=0.3×R+0.6×G+0.1×B;
[0037] The control module calculates the mean Ij and mean square error If of the grayscale values according to the grayscale values of the acquired image data:
[0038] Ij=(I1+I2+I3+···+In) / n;
[0039]
[0040] The control module obtains the maximum grayscale average value I'max and the minimum grayscale average value I'min according to the calculated mean and mean square error:
[0041]
[0042] Calculate the real-time image clarity H' based on the maximum grayscale average value I'max and the minimum grayscale average value I'min:
[0043]
[0044] As another specific embodiment of the present invention, the control module adjusts the slit lamp according to the calculated real-time image clarity H':
[0045] Establish a standard image definition HO and compare the calculated real-time image definition H' with the standard image definition HO:
[0046] When the real-time image clarity H' is greater than the preset image clarity H0, the control module does not need to adjust the slit lamp;
[0047] When the real-time image clarity H' is not greater than the preset image clarity H0, the control module adjusts the slit lamp.
[0048] As another specific embodiment of the present invention, the control module presets image clarity parameters, wherein the first preset image clarity H1, the second preset image clarity H2, and the third preset image clarity H3. The illumination mode adjustment method is selected based on the comparison between the real-time image clarity H' obtained by the control module and the preset image clarity parameters:
[0049] When H'≥H3, the control module does not adjust the lighting mode;
[0050] When H3<H'≤H2, the control module adjusts the light brightness in the lighting mode to Dit', Dit'=Dit×(1+Dj×(H'-H2) / (H3-H2));
[0051] When H2<H'≤H1, the control module adjusts the light intensity and light angle in the light mode. The light intensity is adjusted to Dit', Dit'=Dit×(1+Dj×(H'-H1) / (H2-H1)), and the light angle is adjusted to Jit', Jit'=Jit×(1+Jj×(H2-H') / (H2-H1));
[0052] When H'
[0053] As another specific embodiment of the present invention, the control module is connected to the slit lamp, the mobile platform, the recognition module, the detection module, and the image processing module through wireless communication.
[0054] The present invention has the following beneficial effects:
[0055] The present invention sets a control module to determine the position of the eye to be tested according to the recognition module, controls the mobile platform to move to the eye to be tested, and sets a detection module to detect basic information of the eye to be tested. The control module adjusts the slit width, light brightness and lighting angle in the slit lamp according to the detected eye information until the image clarity feedback from the image processing system reaches a preset standard.
[0056] In particular, the present invention obtains facial images and locates the three-dimensional coordinates of the eyes to be tested on the face by setting a recognition module. The control module controls the movement of the mobile platform according to the three-dimensional coordinate information of the eyes to be tested. At the same time, the control module sets position compensation parameters. When the real-time coordinate information obtained by the control module and the coordinate information of the eyes to be tested are within the preset position compensation parameter range, the movement is suspended to prevent the human body from moving and the coordinates of the eyes to be tested from shifting, causing the slit lamp to collide with the human body.
[0057] In particular, the present invention presets the slit width, illumination angle and light brightness parameters, and selects the slit width, illumination angle and light brightness parameters according to the eye detection position obtained by the control module, so that the control module can select the corresponding slit width, illumination angle and light brightness parameters more quickly, thereby improving the efficiency of eye diagnosis, wherein the illumination angle is based on the ground as the horizontal plane.
[0058] In particular, the present invention detects relevant data of the eye to be tested by setting a detection module, and makes slight adjustments to the slit width, illumination angle and light brightness in the illumination mode according to individual differences, so that the image processing module can process the image of the eye to be tested more clearly; specifically, the present invention presets a standard refractive power Q and a standard axial length F, and adjusts the slit width according to the eye refractive power Q' and axial length F' obtained in real time; the present invention presets a standard eye position offset distance parameter, calculates the eye position offset distance according to the eye position coordinates obtained in real time, and compares it with the standard eye position offset distance. When the eye position offset distance is within the preset standard value, it indicates that the eye position is normal, and the control module does not adjust the illumination angle. When the eye position offset distance exceeds the standard value, it indicates that the eye position is abnormal, and the control module needs to adjust the illumination angle according to the offset distance of the abnormal eye position; at the same time, the present invention presets a standard corneal curvature, and the control module adjusts the light brightness according to the comparison of the corneal curvature obtained in real time with the preset corneal curvature, so that the eye to be tested can be diagnosed more clearly.
[0059] In particular, the present invention sets an image processing module, and the control module collects image grayscale data according to the divided multiple image areas, and then calculates the real-time image clarity, and compares it with the preset image clarity to determine whether the slit lamp needs to be adjusted. If the clarity does not meet the preset standard, the control module uses the preset image clarity parameters, and compares the real-time acquired image clarity with the preset image clarity parameters. The control module adjusts various parameters in the slit lamp. At the same time, the present invention also sets adjustment parameters for each parameter to obtain an image with optimal clarity during the dynamic adjustment of the slit lamp.
[0060] In particular, the present invention has a simpler structure by providing a control module that is wirelessly connected to the slit lamp, the information recognition module, the mobile platform, the detection device and the image processing module.
[0061] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0062] Figure 1 It is a structural schematic diagram of the slit lamp and the mobile platform of the present invention. DETAILED DESCRIPTION
[0063] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.
[0064] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0065] Example 1
[0066] This embodiment provides a slit lamp control system, including a slit lamp, a mobile platform, a recognition module, a detection module, an image processing module and a control module.
[0067] The slit lamp is used to provide light source and perform eye imaging, the mobile platform is used to move the slit lamp to a specified position. Specifically, the mobile platform is a three-dimensional motion platform, the recognition module is used to identify the position of the eye to be tested, the detection module is connected to the slit lamp and is used to detect data of the eye to be tested, and the image processing module is used to process the image of the eye; the control module is data-connected with the slit lamp, mobile platform, recognition module, detection module, and image processing module, specifically a wireless communication connection, to provide relevant control instructions.
[0068] The control module performs the following operations:
[0069] 1) Determine the movement direction of the mobile platform based on the eye position detected by the recognition module;
[0070] 2) The control detection module detects the data of the eye to be tested and transmits the data to the image processing module for processing. The control module calculates the image clarity fed back by the processing module and adjusts the light intensity, slit width and lighting angle of the slit lamp to make the image processing clarity meet the preset standard.
[0071] First, a three-dimensional coordinate system L(0, 0, 0) with the eyepiece of the slit lamp as the origin is established. The facial image is obtained by the recognition module and uploaded to the control module. The control module identifies the eyes and obtains the eye coordinates E(Xe, Ye, Ze). The position compensation parameter wj is set. The control module controls the mobile platform to move the eyepiece of the slit lamp from the coordinates L(0, 0, 0) to E(Xe', Ye', Ze'), where |Xe'-Xe|≤wj, |Ye'-Ye|≤wj, |Ze'-Ze|≤wj. When |Xe'-Xe|≤wj, |Ye'-Ye|≤wj, |Ze'-Ze|≤wj are satisfied, the control module controls the mobile platform to stop moving. The control module determines the center of the surface of the eye to be measured as the origin of the measured coordinates.
[0072] Secondly, the control module selects different slit widths, illumination angles, and illumination intensity according to different eye detection locations, and establishes a relationship matrix M(Ai, Bi, Ci, Di, i=1, 2, 3), where Ai represents the eye detection location, Bi represents the slit width, Ci represents the illumination angle, and Di represents the illumination intensity. The specific implementation is as follows:
[0073] When the eye detection part A1 is the front of the anterior capsule of the lens, the lens, the cornea, and the retina, the control module selects the first slit width B1 as the slit width of the slit lamp, selects the first illumination angle C1 as the illumination angle of the slit lamp, and selects the first light luminance D1 as the light luminance of the slit lamp;
[0074] When the eye detection part A2 is the side of the anterior capsule of the lens or the posterior capsule of the lens, the control module selects the second slit width B2 as the slit width of the slit lamp, selects the second illumination angle C2 as the illumination angle of the slit lamp, and selects the second light brightness D2 as the light brightness of the slit lamp;
[0075] When the eye detection part A3 is the anterior chamber flare and vitreous body, the control module selects the third slit width B3 as the slit width of the slit lamp, selects the third illumination angle C3 as the illumination angle of the slit lamp, and selects the third light brightness D3 as the light brightness of the slit lamp.
[0076] Then, the control module adjusts the slit width of the slit lamp according to the real-time eye refractive power Q' and axial length F' obtained by the detection module. The specific implementation is as follows:
[0077] Establish standard refractive power Q and standard axial length F;
[0078] Compare the standard refractive power Q with the real-time eye refractive power Q' obtained by the detection module:
[0079] If the real-time eye refractive power Q' is greater than the standard refractive power Q, the control module adjusts the slit width to shorten to Bit, Bit = Bi × (1 - (Q' - Q) / Q × (F' - F) / F), i = 1, 2, 3;
[0080] If the real-time eye refractive power Q' is less than or equal to the preset standard refractive power Q, the control module adjusts the slit width to increase to Bit, Bit = Bi × (1 + (Q-Q') / Q × (F-F') / F, i = 1, 2, 3.
[0081] Next, the control module adjusts the illumination angle of the slit lamp according to the eye coordinates P (Xp, Yp, Zp) obtained by the detection module. The specific implementation is as follows:
[0082] Establish the standard eye position offset distance parameter T;
[0083] The control module calculates the real-time eye position offset distance parameter T' based on the eye position coordinate P obtained by the detection module.
[0084] If the real-time eye position offset distance T' is not less than the standard eye position offset distance T, the control module does not adjust the illumination angle;
[0085] If the real-time eye offset distance T' is less than the standard eye offset distance T, the control module adjusts the illumination angle to Cit, where Cit = Ci*(1-(T'-T) / T), i = 1, 2, 3.
[0086] Next, the control module adjusts the slit lamp's brightness according to the real-time corneal curvature M' obtained by the detection module, specifically as follows:
[0087] Establish standard corneal curvature M;
[0088] Compare the standard corneal curvature M with the real-time corneal curvature M' obtained by the detection module:
[0089] If the real-time corneal curvature M' is greater than the standard corneal curvature M, the control module reduces the light brightness to Dit, Dit = Di*(1-(M'-M) / M), i = 1, 2, 3;
[0090] If the real-time corneal curvature M' is less than or equal to the standard corneal curvature M, the control module increases the light brightness to Dit, where Dit=Di*(1+(M'-M) / M), i=1, 2, 3.
[0091] Then, the image processing module divides the acquired image data into n image regions, collects the real-time RGB image information of the eye in the n-th image region, and converts the RGB information of the n-th region image into grayscale values In:
[0092] In=0.3×R+0.6×G+0.1×B;
[0093] The control module calculates the mean Ij and mean square error If of the grayscale values according to the grayscale values of the acquired image data:
[0094] Ij=(I1+I2+I3+···+In) / n;
[0095]
[0096] The control module obtains the maximum grayscale average value I'max and the minimum grayscale average value I'min according to the calculated mean and mean square error:
[0097]
[0098] Calculate the real-time image clarity H' based on the maximum grayscale average value I'max and the minimum grayscale average value I'min:
[0099]
[0100] Next, the control module adjusts the slit lamp according to the calculated real-time image clarity H':
[0101] Establish a standard image definition HO and compare the calculated real-time image definition H' with the standard image definition HO:
[0102] When the real-time image clarity H' is greater than the preset image clarity H0, the control module does not need to adjust the slit lamp;
[0103] When the real-time image clarity H' is not greater than the preset image clarity H0, the control module adjusts the slit lamp.
[0104] Finally, the control module presets image clarity parameters, including the first preset image clarity H1, the second preset image clarity H2, and the third preset image clarity H3. The control module compares the real-time image clarity H' obtained by the control module with the preset image clarity parameters to select the illumination mode adjustment method:
[0105] When H'≥H3, the control module does not adjust the lighting mode;
[0106] When H3<H'≤H2, the control module adjusts the light brightness in the lighting mode to Dit', Dit'=Dit×(1+Dj×(H'-H2) / (H3-H2));
[0107] When H2<H'≤H1, the control module adjusts the light intensity and light angle in the light mode. The light intensity is adjusted to Dit', Dit'=Dit×(1+Dj×(H'-H1) / (H2-H1)), and the light angle is adjusted to Jit', Jit'=Jit×(1+Jj×(H2-H') / (H2-H1));
[0108] When H'<H1, the control module adjusts the light intensity, illumination angle and crack width in the illumination mode. The light intensity is adjusted to Dit', Dit'=Dit×(1+Dj×(H1-H') / H), the illumination angle is adjusted to Jit', Jit'=Jit×(1+Jj×(H1-H') / H1), and the crack width is adjusted to Bit', Bit'=Bit'×(1-Bj×((H1-H') / H1)), where Dj is the light intensity adjustment parameter preset by the control module, Jj is the illumination angle adjustment parameter preset by the control module, and Bj is the crack width adjustment parameter preset by the control module.
[0109] The slit lamp structure formed by the slit lamp 1 and the mobile platform in this embodiment is as follows Figure 1 As shown, the mobile platform includes a support platform 14, the X-axis motion device includes a first drive motor 8 and a first conveying mechanism 7, which is used to move the slit lamp 1 in the X-axis direction, the Y-axis motion device includes a second drive motor 9 and a second conveying mechanism 6 for moving the slit lamp 1 in the Y-axis direction, and the Z-axis motion device includes a third drive motor 11 and a third conveying mechanism 10, which moves the slit lamp 1 in the Z-axis direction. When using this embodiment, when the control module obtains the target coordinates as (X', Y', Z'), the control module controls the first drive motor 8 in the X-axis motion device to drive the first conveying mechanism 7 to move, and the first conveying mechanism 7 moves the slit lamp 1 from the origin to the X' position on the X-axis; the control module controls the second drive motor 9 in the Y-axis motion device to drive the second conveying mechanism 6 to move, and the second conveying mechanism moves the slit lamp 1 from the origin to the Y' position on the Y-axis; the control module controls the third drive motor 11 in the Z-axis motion device to drive the third conveying mechanism 10 to move, and the third conveying mechanism 10 moves the slit lamp 1 from the origin to the Z' position on the Z-axis.
[0110] Continue to see Figure 1 The embodiment of the present invention further provides a first reduction gearbox 13 and a second reduction gearbox 12, wherein the first reduction gearbox 13 is connected to a first steering shaft 3 to control the rotation of the slit lamp 1, thereby changing the slit light angle. At the same time, a second reduction gearbox 12 is provided, and the second reduction gearbox 12 is provided with a second steering shaft 2. The second steering shaft is connected to a detection device 4 such as an eyepiece or an ophthalmometer for observing the eye to be tested and detecting basic information of the eye to be tested. At the same time, a camera is provided in the image processing module to take pictures of the eye, and an information recognition device 5 is also provided to obtain eye position information. A displacement sensor 15 is provided on the slit lamp 1 to control the change in the width of the slit lamp.
[0111] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the scope of the present invention. Any person skilled in the art may make slight modifications without departing from the scope of the present invention. In other words, any equivalent modifications made in accordance with the present invention should be included within the scope of the present invention.
Claims
1. A slit lamp control system comprising: Slit lamp, used to provide light and image the eye; A moving platform, used for moving the slit lamp to a designated position; An identification module, used to identify the position of the eye to be tested; A detection module, connected to the slit lamp, for detecting data of the eye to be tested; An image processing module, used for processing eye images; as well as A control module, wherein the control module is data-connected to the slit lamp, the mobile platform, the recognition module, the detection module, and the image processing module; The control module performs the following operations: 1) determining the movement direction of the mobile platform according to the eye position detected by the recognition module; 2) controlling the detection module to detect data of the eye to be tested and transmitting the data to the image processing module for processing, the control module calculating the image clarity fed back by the processing module and adjusting the illumination intensity, slit width and illumination angle of the slit lamp so that the image processing clarity meets the preset standard; The control module selects different slit widths, illumination angles, and illumination brightness according to different eye detection parts, and establishes a relationship matrix M(Ai, Bi, Ci, Di, i=1, 2, 3), where Ai represents the eye detection part, Bi represents the slit width, Ci represents the illumination angle, and Di represents the illumination brightness; The control module adjusts the slit width of the slit lamp according to the real-time eye refractive power Q' and axial length F' obtained by the detection module, and is specifically performed as follows: Establish standard refractive power Q and standard axial length F; Compare the standard refractive power Q with the real-time eye refractive power Q' obtained by the detection module: If the real-time eye refractive power Q' is greater than the standard refractive power Q, the control module adjusts the slit width to shorten to Bit, Bit = Bi × (1 - (Q' - Q) / Q × (F' - F) / F), i = 1, 2, 3; If the real-time eye refractive power Q' is less than or equal to the preset standard refractive power Q, the control module adjusts the slit width to increase to Bit, Bit = Bi × (1 + (Q-Q') / Q × (F-F') / F, i = 1, 2, 3.
2. The slit lamp control system according to claim 1, wherein: In step 1), a three-dimensional coordinate system L(0, 0, 0) with the eyepiece of the slit lamp as the origin is established, a facial image is obtained by the recognition module and uploaded to the control module, the control module recognizes the eyes and obtains the eye coordinates E(Xe, Ye, Ze), sets the position compensation parameter wj, and the control module controls the movement of the mobile platform to move the eyepiece of the slit lamp from the coordinates L(0, 0, 0) to E(Xe', Ye', Ze'), where |Xe'-Xe|≤wj, |Ye'-Ye|≤wj, |Ze'-Ze|≤wj.
3. The slit lamp control system according to claim 1, wherein: The control module establishes the relationship matrix M, which is specifically implemented as follows: When the eye detection part A1 is the front of the anterior capsule of the lens, the lens, the cornea, and the retina, the control module selects the first slit width B1 as the slit width of the slit lamp, selects the first illumination angle C1 as the illumination angle of the slit lamp, and selects the first light illuminance D1 as the light illuminance of the slit lamp; When the eye detection part A2 is the side of the anterior capsule of the lens and the posterior capsule of the lens, the control module selects the second slit width B2 as the slit width of the slit lamp, selects the second illumination angle C2 as the illumination angle of the slit lamp, and selects the second light illuminance D2 as the light illuminance of the slit lamp; When the eye detection part A3 is the anterior chamber flare and the vitreous body, the control module selects the third slit width B3 as the slit width of the slit lamp, selects the third illumination angle C3 as the illumination angle of the slit lamp, and selects the third light brightness D3 as the light brightness of the slit lamp.
4. The slit lamp control system according to claim 1, wherein: The control module adjusts the illumination angle of the slit lamp according to the eye coordinates P (Xp, Yp, Zp) obtained by the detection module, and is specifically performed as follows: Establish the standard eye position offset distance parameter T; The control module calculates the real-time eye position offset distance parameter T' according to the eye position coordinate P obtained by the detection module. If the real-time eye position offset distance T' is not less than the standard eye position offset distance T, the control module does not adjust the illumination angle; If the real-time eye offset distance T' is less than the standard eye offset distance T, the control module adjusts the illumination angle to Cit, where Cit = Ci*(1-(T'-T) / T), i = 1, 2, 3.
5. The slit lamp control system according to claim 1, wherein: The control module adjusts the brightness of the slit lamp according to the real-time corneal curvature M' obtained by the detection module, and is specifically performed as follows: Establish standard corneal curvature M; Compare the standard corneal curvature M with the real-time corneal curvature M' obtained by the detection module: If the real-time corneal curvature M' is greater than the standard corneal curvature M, the control module reduces the light brightness to Dit, Dit = Di*(1-(M'-M) / M), i = 1, 2, 3; If the real-time corneal curvature M' is less than or equal to the standard corneal curvature M, the control module increases the light brightness to Dit, where Dit=Di*(1+(M'-M) / M), i=1, 2, 3.
6. The slit lamp control system according to claim 1, wherein: The image processing module divides the acquired image data into n image regions, collects real-time RGB image information of the eye in the n-th image region, and converts the RGB information of the n-th region image into a grayscale value In: In=0.3×R+0.6×G+0.1×B; the RGB information is the brightness value of each of the red, green, and blue color channels; The control module calculates the mean Ij and mean square error If of the grayscale values according to the grayscale values of the acquired image data: Ij=(I1+I2+I3+···+In) / n; The control module obtains the maximum grayscale average value I'max and the minimum grayscale average value I'min according to the calculated mean and mean square error: Calculate the real-time image clarity H' based on the maximum grayscale average value I'max and the minimum grayscale average value I'min:
7. The slit lamp control system according to claim 6, wherein: The control module adjusts the slit lamp according to the calculated real-time image clarity H': Establish a standard image definition HO and compare the calculated real-time image definition H' with the standard image definition HO: When the real-time image clarity H' is greater than the preset image clarity H0, the control module does not need to adjust the slit lamp; When the real-time image clarity H' is not greater than the preset image clarity H0, the control module adjusts the slit lamp.
8. The slit lamp control system according to claim 7, wherein: The control module presets image clarity parameters, wherein the first preset image clarity H1, the second preset image clarity H2, and the third preset image clarity H3. The illumination mode adjustment method is selected based on the comparison between the real-time image clarity H' obtained by the control module and the preset image clarity parameters: When H'≥H3, the control module does not adjust the lighting mode; When H3<H'≤H2, the control module adjusts the light brightness in the lighting mode to Dit', where Dit'=Dit×(1+Dj×(H'-H2) / (H3-H2)); When H2<H'≤H1, the control module adjusts the light brightness and light angle in the light mode, and the light brightness is adjusted to Dit', Dit'=Dit×(1+Dj×(H'-H1) / (H2-H1)), and the light angle is adjusted to Jit', Jit'=Jit×(1+Jj×(H2-H') / (H2-H1)); When H'<H1, the control module adjusts the light brightness, illumination angle and crack width in the illumination mode, and the light brightness is adjusted to Dit', Dit'=Dit×(1+Dj×(H1-H') / H), the illumination angle is adjusted to Jit', Jit'=Jit×(1+Jj×(H1-H') / H1), and the crack width is adjusted to Bit', Bit'=Bit'×(1-Bj×((H1-H') / H1)), where Dj is the light brightness adjustment parameter preset by the control module, Jj is the illumination angle adjustment parameter preset by the control module, and Bj is the crack width adjustment parameter preset by the control module.
9. The slit lamp control system according to claim 1, wherein: The control module is wirelessly connected to the slit lamp, the mobile platform, the recognition module, the detection module, and the image processing module.
Citation Information
Patent Citations
Automatic focusing method of slit lamp microscope and slit lamp microscope
CN112022086A