A device for measuring axial displacement of an intraocular lens under compression

Abstract

The utility model discloses a device for measuring the axial displacement of an artificial lens under compression force, comprising: an optical measurement system, an artificial lens bracket and a light-transmitting base; the light-transmitting base is arranged in the optical path of the optical measurement system and is provided with a receiving cavity for accommodating a solution simulating aqueous humor of human eyes; the artificial lens bracket is arranged on the light-transmitting base, and its part is located in the receiving cavity and is provided with a bracket light-transmitting groove, the bracket light-transmitting groove is used to place the artificial lens and can simultaneously apply the same compression force to the two haptics of the artificial lens, so that the two haptics of the artificial lens are simultaneously subjected to the same compression force, ensuring the stability of the artificial lens during the compression process; the optical measurement system is used to measure the position of the optical imaging of the upper surface of the artificial lens in a non-compression state and in a compression state respectively. This measurement method is not affected by the fuzziness of the projection contour boundary, and has high measurement accuracy, so that the measurement device has good measurement stability, high accuracy of measurement results and high measurement precision.

Description

Technical Field

[0001] The utility model relates to the technical field of human eye treatment, in particular to a device for measuring the axial displacement of an artificial lens under compression force. Background Art

[0002] The lens is one of the important refractive media in the eyeball. It is in the shape of a biconvex lens, with a diameter of about 9mm and a thickness of about 4 to 5mm. The junction of the front and back surfaces is called the equatorial part, and the vertices of the two surfaces are called the anterior pole and the posterior pole of the lens respectively. The lens, like the lens in a camera, has a refractive effect on light, and can also filter out some ultraviolet rays to protect the retina, but its most important function is to change the refractive power through the contraction or relaxation of the ciliary muscle, so that the focus of the eyeball can accurately fall on the retina when looking far or near. With the increase of age or some traumatic injuries, the lens will become cloudy, leading to decreased vision and even blindness. At present, cataracts are still the world's number one blinding eye disease, and phacoemulsification combined with intraocular lens implantation is the only treatment for cataracts. This treatment method removes the originally cloudy lens of the human eye through phacoemulsification and replaces the human eye lens with an artificial lens to achieve the effect of restoring vision.

[0003] After the intraocular lens is implanted, it relies on the loop to support it in the capsular bag or ciliary sulcus to maintain the stability of the intraocular lens. Since the diameters of the capsular bag and ciliary sulcus are 10mm and 11mm respectively, and the total diameter of the intraocular lens is generally 11mm to 13mm, the intraocular lens is in a compressed state after being implanted in the human eye. The axial displacement of the intraocular lens under compression simulates the axial displacement of the intraocular lens forward or backward after being compressed by the capsular bag or ciliary muscle. Since the intraocular lens is implanted between the iris and the vitreous body, the axial displacement of the intraocular lens after being compressed is too large, which will cause the optical zone to be partially or completely exposed in front of the iris, and the support loop is still behind the iris. The intraocular lens is incarcerated in the pupil, causing the pupil of the intraocular lens to be clamped. If the pupil clamping causes the intraocular lens to tilt significantly, it can cause astigmatism, chronic uveitis, thickening and turbidity of the posterior capsule, cystoid macular edema, and pigmentation on the surface of the intraocular lens, all of which can cause a significant decrease in the patient's vision.

[0004] At present, the device for measuring the axial displacement of the intraocular lens under compression is mainly based on the projection method, using a measuring seat with a diameter of 10mm / 11mm, and a projector to magnify the height of the intraocular lens arched after being compressed in the measuring seat. Because the main body of the intraocular lens usually has different surface designs (concave-convex, convex-concave, biconvex, etc.), there is a fuzzy interface when only observing with a projector, and when the haptics of the intraocular lens are subjected to different compression forces on both sides of the measuring seat, the main body of the intraocular lens tilts. At this time, the axial displacement under compression cannot be simply observed with a projector. In other words, the existing device for measuring the axial displacement of the intraocular lens under compression still has the following disadvantages:

[0005] 1. To measure the axial displacement of the intraocular lens under compression force through a projector, it is necessary to observe the reflection of the intraocular lens on the projector screen. The intraocular lens itself has a certain thickness (ranging from 0.3mm to 1.5mm, with different focal powers and thicknesses). When observing the boundary of the intraocular lens on the projector, it is easy to be unclear, resulting in measurement errors;

[0006] 2. During the compression process of the measuring base, the adjusting nuts at both ends of the measuring base need to be adjusted separately. Different adjustment rates cause the two haptics of the intraocular lens to be subjected to different compression forces, resulting in instability such as tilt and eccentricity of the intraocular lens during the compression process, affecting the accuracy of the measurement results;

[0007] 3. The diameter of the sizing circle of the measuring device is 10mm, which can only meet the measurement requirements of artificial lenses implanted in the capsular bag of the human eye (compressed diameter is 10mm). It cannot measure artificial lenses implanted in the ciliary sulcus of the human eye (compressed diameter is 11mm) and other artificial lenses with special compression diameter designs. It has a small application range and cannot be applied to all types of artificial lenses. Utility Model Content

[0008] In view of this, the utility model provides a device for measuring the axial displacement of an artificial lens under compression force, which has the characteristics of good measurement stability, high accuracy of measurement results and high measurement precision.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A device for measuring the axial displacement of an intraocular lens under compression force, comprising: an optical measurement system, an intraocular lens support and a transparent base;

[0011] The light-transmitting base is arranged in the optical path of the optical measurement system and is provided with a receiving cavity for receiving a solution simulating aqueous humor of human eyes;

[0012] The artificial lens holder is arranged on the light-transmitting base, and a part of the holder is located in the accommodating cavity and is provided with a holder light-transmitting groove, wherein the holder light-transmitting groove is used to place the artificial lens and can simultaneously apply the same compression force to the two haptics of the artificial lens;

[0013] The optical measurement system is used to measure the position of the optical imaging of the upper surface of the intraocular lens in a non-compressed state and in a compressed state respectively.

[0014] Preferably, the intraocular lens support comprises: a sliding seat, a first sliding arm, a second sliding arm, a transmission assembly and a driving assembly;

[0015] The sliding seat is arranged on the light-transmitting base;

[0016] The first sliding arm and the second sliding arm are relatively slidably disposed on the sliding seat, and the free ends thereof are both located in the accommodating cavity and the bracket light-through groove is formed between the free ends;

[0017] The driving assembly is disposed on the slide seat, and is used to drive the first slide arm to slide toward the second slide arm;

[0018] The transmission assembly is arranged on the light-transmitting base, and is at least used for driving the second slide arm to slide synchronously toward the first slide arm when the driving assembly drives the first slide arm to slide toward the second slide arm, so that the first slide arm and the second slide arm slide synchronously toward each other.

[0019] Preferably, the free end of the first sliding arm includes a first pressing plate, and the free end of the second sliding arm includes a second pressing plate, and the first pressing plate and the second pressing plate are arranged opposite to each other along the sliding direction of the first sliding arm or the second sliding arm, and are both located in the accommodating cavity;

[0020] The first pressing plate has a first semi-transparent groove on its end surface facing the second pressing plate, and the second pressing plate has a second semi-transparent groove on its end surface facing the first pressing plate. The bracket transparent groove is formed between the first semi-transparent groove and the second semi-transparent groove.

[0021] Preferably, the first semi-transparent groove is provided with a first haptic groove for accommodating the first haptic of the intraocular lens, and a first haptic groove chamfer is provided between the first semi-transparent groove and the upper edge of the bottom of the first haptic groove;

[0022] The second semi-transparent groove is provided with a second haptic groove for accommodating the second haptic of the artificial lens, and a second haptic groove chamfer is provided between the second semi-transparent groove and the upper edge of the bottom of the second haptic groove.

[0023] Preferably, the transmission assembly comprises: a transmission rod, a first fixed seat and two rollers;

[0024] The first fixing seat is arranged on the light-transmitting base;

[0025] The transmission rod is arranged parallel to the first sliding arm or the second sliding arm, and the middle part thereof is rotatably connected to the first fixing seat;

[0026] The two rollers are respectively vertically arranged at the two ends of the transmission rod, and are respectively abutted and matched with the first sliding arm and the second sliding arm.

[0027] Preferably, it also includes: a second fixing seat and a baffle;

[0028] The driving part includes: a digital dial indicator;

[0029] The digital display micrometer is fixed to the slide seat via the second fixing seat;

[0030] The baffle is arranged on the first sliding arm, and the measuring rod of the digital micrometer is used to push the baffle to make the first sliding arm slide toward the second sliding arm.

[0031] Preferably, the light-transmitting base comprises: a base pedestal and light-transmitting glass;

[0032] The base is arranged in the optical path of the optical measurement system and is provided with the accommodating cavity. The bottom of the accommodating cavity is provided with a base light-through groove which is aligned with the bracket light-through groove.

[0033] The light-transmitting glass blocks the light-transmitting groove of the base of the accommodating cavity;

[0034] The artificial lens support is arranged on the base.

[0035] Preferably, it also includes a light-transmitting cover sheet;

[0036] The light-transmitting cover is arranged on the top of the light-transmitting base accommodating cavity, and is used for covering the liquid surface of the solution in the accommodating cavity.

[0037] Preferably, the light-transmitting cover sheet comprises: a cover sheet base and a light-transmitting cover glass;

[0038] The cover plate base is arranged across the top of the cavity, and a boss is provided at the bottom thereof for covering the liquid surface of the solution in the cavity. The cover plate base is also provided with a cover plate light-through groove, which is aligned with the light-through groove of the bracket.

[0039] The light-transmitting cover glass blocks the light-transmitting groove of the cover glass.

[0040] Preferably, it also includes a light aperture stop;

[0041] The light-through aperture is used to be arranged between the light-through groove of the artificial lens support and the bottom of the light-through base accommodating cavity.

[0042] It can be seen from the above technical scheme that the device for measuring the axial displacement of an artificial lens under compression force provided by the utility model places the artificial lens into the light-transmitting groove of the artificial lens holder, and applies the same compression force to the two loops of the artificial lens at the same time, so that the two loops of the artificial lens are subjected to the same compression force at the same time, ensuring the stability of the artificial lens during the compression process, and then the accommodating cavity of the base is combined with a solution simulating human aqueous humor to simulate the intraocular aqueous humor environment, and then the optical imaging position of the upper surface of the artificial lens in the non-compression state and the compression state is measured respectively by the optical measurement system, and the distance between the two positions is the axial displacement of the artificial lens under compression force. Of course, this measurement method is not affected by the fuzzy boundary of the projection contour, and the measurement accuracy is high. In this way, the measuring device has the characteristics of good measurement stability, high accuracy of measurement results and high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 A schematic diagram of the structure of a device for measuring the axial displacement of an intraocular lens under compression force provided by an embodiment of the utility model;

[0045] Figure 2 A schematic diagram of assembling the transparent cover sheet, the intraocular lens support and the transparent base provided in an embodiment of the utility model;

[0046] Figure 3 A top view of the assembly of the transparent cover sheet, the intraocular lens support and the transparent base provided in the embodiment of the utility model;

[0047] Figure 4 An exploded schematic diagram of a transparent cover sheet, an intraocular lens support and a transparent base provided in an embodiment of the utility model;

[0048] Figure 5 A schematic diagram of the structure of an artificial lens support provided by an embodiment of the utility model;

[0049] Figure 6 A schematic diagram of installing an intraocular lens in an intraocular lens support provided by an embodiment of the utility model;

[0050] Figure 7A schematic diagram of the cooperation between the light aperture stop and the intraocular lens support provided in an embodiment of the utility model;

[0051] Figure 8 Another structural schematic diagram of an artificial lens support provided by an embodiment of the utility model;

[0052] Fig. 9 A bottom view of the structure of an intraocular lens support provided by an embodiment of the utility model;

[0053] Fig.10 A schematic structural diagram of a pressure plate of an intraocular lens support provided by an embodiment of the utility model;

[0054] Fig.11 An exploded view of the structure of the light-transmitting base provided in the embodiment of the utility model;

[0055] Fig.12 An exploded view of the structure of the light-transmitting cover sheet provided in the embodiment of the utility model;

[0056] Fig.13 A schematic diagram of the structure of the light-transmitting aperture provided in an embodiment of the utility model;

[0057] Fig.14 for Figure 3 AA section view;

[0058] Fig.15 The position of the optical imaging of the upper surface of the intraocular lens provided by the embodiment of the utility model in a non-compressed state;

[0059] Fig.16 The optical imaging of the upper surface of the intraocular lens provided in the embodiment of the utility model is in the position of the compression state.

[0060] 01 is a light-transmitting cover glass, 011 is a cover glass base, 012 is a light-transmitting cover glass, 013 is a boss, and 014 is a light-transmitting groove of the cover glass;

[0061] 02 is the intraocular lens bracket, 0201 is the pressure plate, 0202 is the vertical pole, 0203 is the cross bar, 0204 is the moving plate, 0205 is the cross roller slide, 0206 is the transmission rod, 0207 is the roller, 0208 is the first fixed seat, 0209 is the baffle, 0210 is the second fixed seat, 0211 is the digital micrometer, 0212 is the fixing screw hole of the pressure plate, 0213 is the fixing screw hole of the vertical pole and cross bar, 0214 is the fixing screw hole of the cross bar moving plate, 0215 is the fixing screw hole of the moving plate slide, 0216 is the fixing screw hole of the first fixed seat, 0217 is the fixing screw hole of the block, and 0218 is the fixing screw of the transmission rod hole, 0219 is the second fixing seat fixing screw hole, 0220 is the baffle fixing screw hole, 02051 is the slide seat, 02052 is the slider, 0221 is the cross roller slide fixing screw hole, 0222 is the digital display micrometer fixing screw hole, 0223 is the bracket light-through slot, 02231 is the first half light-through slot, 02232 is the second half light-through slot, 02011 is the lower pressure plate, 02012 is the upper pressure plate, 02013 is the pressure plate and the vertical rod fixing screw hole, 02014 is the loop groove, 02015 is the loop groove chamfer, 02016 is the lower pressure plate groove surface, 0224 is the stopper, 02111 is the differential cylinder, 02112 is the measuring rod;

[0062] 03 is the light-transmitting base, 031 is the light-transmitting glass, 032 is the base, 033 is the first threaded hole, 034 is the second threaded hole, 035 is the accommodating cavity, and 036 is the light-transmitting groove of the base;

[0063] 04 is the light aperture; 05 is the light source assembly; 06 is the CCD assembly; 07 is the artificial lens; 08 is the base. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0065] The device for measuring the axial displacement of an intraocular lens under compression force provided by the embodiment of the utility model is as follows: Figure 1 As shown, it includes: an optical measurement system, an intraocular lens support 02 and a transparent base 03;

[0066] The light-transmitting base 03 is arranged in the optical path of the optical measurement system and has a receiving cavity 035 (such as Fig.11 As shown), used to contain a solution simulating human aqueous humor;

[0067] like Figure 2As shown, the intraocular lens support 02 is arranged on the light-transmitting base 03, and part of it is located in the accommodating cavity 035 and is provided with a support light-transmitting groove 0223 (such as Figure 5 As shown), Figure 6 As shown, the bracket light-through groove 0223 is used to place the artificial lens 07 and can simultaneously apply the same compression force to the two haptics of the artificial lens 07;

[0068] The optical measurement system is used to measure the position of the optical imaging on the upper surface of the intraocular lens in a non-compression state and in a compression state respectively.

[0069] It should be noted that if Figure 1 As shown, the light-transmitting base 03 is arranged below the optical path of the light source component 05 of the optical measurement system, and the optical path of the optical measurement system is able to pass through the accommodating cavity 035 of the light-transmitting base 03, wherein the light-transmitting base 03 is installed between the base 08 and the CCD component 06 of the optical measurement system; that is, the measuring tool composed of the artificial lens bracket 02 and the light-transmitting base 03 is installed between the base 08 and the CCD component 06 of the optical measurement system; and considering that after the artificial lens is implanted into the human eye in actual clinical practice, the artificial lens is in a solution filled with aqueous humor, in order to simulate the artificial lens in the clinical environment, the accommodating cavity 035 of the light-transmitting base 03 contains a solution simulating the aqueous humor of the human eye, which is used to simulate the aqueous humor environment of the human eye, wherein the solution can be a 0.9% sodium chloride solution;

[0070] In addition, if Figure 2 As shown, the intraocular lens holder 02 is arranged on the light-transmitting base 03, and a part of it (i.e., the free ends of the first sliding arm and the second sliding arm hereinafter) extends into the accommodating cavity 035 and is provided with a holder light-transmitting groove 0223, the holder light-transmitting groove 0223 is used to place the intraocular lens 07 and can simultaneously apply the same compressive force to the two haptics of the intraocular lens 07, so that the two haptics of the intraocular lens 07 are simultaneously subjected to the same compressive force, thereby avoiding the intraocular lens 07 from tilting, eccentricity and other unstable phenomena during the compression process, ensuring the stability of the intraocular lens 07 during the compression process, and further ensuring the accuracy of the measurement result of the intraocular lens 07; of course, the light path of the optical measurement system will also pass through the holder light-transmitting groove 0223 of the intraocular lens holder 02, and the holder light-transmitting groove 0223 can be opened to facilitate the loading of the intraocular lens 07; it should be noted that, Figure 6 The intraocular lens 07 is a schematic structural diagram;

[0071] In addition, the optical measurement system can measure the position of the optical image on the upper surface of the intraocular lens in a non-compressed state and in a compressed state respectively; wherein, Fig.15 As shown in Figure 2, the position of the optical imaging on the upper surface of the intraocular lens in the non-compressed state is h0, as shown in Figure 2. Fig.16As shown, the position of the optical imaging of the upper surface of the artificial lens in the compressed state is h1, and the difference between h1 and h0 is the axial displacement of the artificial lens under the compression force, and such measurement is not affected by the blurred boundary of the projection contour, and the measurement accuracy is high; wherein, the optical imaging of the upper surface of the artificial lens 07 produces an arch height in the compressed state, that is, the optical imaging of the upper surface of the artificial lens 07 correspondingly moves, and the optical imaging of the upper surface of the artificial lens 07 after the arch height can be found by moving the CCD component 06 of the optical measurement system, and the distance moved by the CCD component 06 is the arch height of the artificial lens 07 after compression, and this arch height is the axial displacement generated by the artificial lens after the compression force; wherein, the CCD component 06 is fixed on the guide rail in the optical measurement system and can move up and down, and the optical measurement system captures the surface image of the optical element (such as the artificial lens 07 of this scheme) by recording the CCD component 06, and records the absolute / relative position of the CCD component 06 on the guide rail. That is to say, by operating the components of the optical measurement system itself, the positions of the optical imaging on the upper surface of the artificial lens in the uncompressed state and in the compressed state can be measured, and the height difference between these two positions is the axial displacement of the artificial lens after being subjected to compression force; of course, this scheme can adopt the existing optical measurement system.

[0072] It should also be noted that after the image of the lower surface of the artificial lens 07 is refracted by the crystal, it is difficult to find it accurately in a complex optical system. Moreover, after the light is refracted by the crystal, the distance obtained in the optical measurement system is not the physical distance in the uncompressed state and the compressed state. It needs to be corrected to the physical distance using the refractive index of the crystal, and the user of this device cannot obtain the refractive index data of artificial lenses of all material types. Therefore, this solution can measure the position of the optical imaging of the upper surface of the artificial lens in the uncompressed state and the compressed state respectively through the optical measurement system, so as to measure the axial displacement of the artificial lens after being subjected to compression force.

[0073] That is to say, in order to solve the defects of the existing measuring devices, the present scheme provides a device for measuring the axial displacement of an artificial lens under compression force based on the principle of optical imaging. The artificial lens is placed in the light-transmitting groove 0223 of the artificial lens holder 02, and the same compression force is applied to the two loops of the artificial lens at the same time, so that the two loops of the artificial lens are subjected to the same compression force at the same time, ensuring the stability of the artificial lens during the compression process, and the accommodating cavity 035 of the base 03 is combined to load a solution simulating human aqueous humor to simulate the intraocular aqueous humor environment, and then the optical measurement system is used to measure the positions of the optical imaging of the upper surface of the artificial lens in the uncompressed state and in the compressed state respectively. The distance between these two positions is the axial displacement of the artificial lens under compression force. Of course, this measurement method is not affected by the blurred boundary of the projection contour, and the measurement accuracy is high. In this way, the present measuring device has the characteristics of good measurement stability, high accuracy of measurement results and high measurement accuracy.

[0074] In this scheme, if Figure 8 As shown, the intraocular lens support 02 includes: a slide 02051, a first slide arm, a second slide arm, a transmission assembly and a drive assembly;

[0075] like Figure 2 As shown, the slide seat 02051 is arranged on the light-transmitting base 03;

[0076] The first sliding arm and the second sliding arm are relatively slidably disposed on the sliding seat 02051, and the free ends thereof are both located in the accommodating cavity 035 and a bracket light-through groove 0223 is formed between the free ends;

[0077] The driving assembly is arranged on the slide seat 02051, and is used to drive the first slide arm to slide toward the second slide arm;

[0078] The transmission assembly is arranged on the light-transmitting base 03, and is at least used to drive the second slide arm to slide synchronously toward the first slide arm when the driving assembly drives the first slide arm to slide toward the second slide arm, so that the first slide arm and the second slide arm slide synchronously toward each other.

[0079] It should be noted that the structure of the light-transmitting base 03 can be referred to Fig.11 As shown, Figure 2As shown, a storage cavity 035 is provided on one side of the top of the light-transmitting base 03, and the other side is fixed to the slide 02051; the first slide arm and the second slide arm can slide toward and away from each other along the slide 02051, and the free ends of the first slide arm and the second slide arm both extend into the storage cavity 035, and a bracket light-transmitting groove 0223 is formed between the two free ends; the driving component is used to drive the first slide arm to slide toward the second slide arm, so that the bracket light-transmitting groove 0223 synchronously compresses the two loops of the artificial lens 07; the transmission component is arranged on the light-transmitting base 03, at least for driving the second slide arm to slide toward the first slide arm synchronously when the driving component drives the first slide arm to slide toward the second slide arm, so that the first slide arm A sliding arm and a second sliding arm slide toward each other synchronously, and the transmission component is also equivalent to a linkage component between the first sliding arm and the second sliding arm. When the first sliding arm slides toward the second sliding arm, the second sliding arm is linked and synchronously slides toward the first sliding arm, so that the first sliding arm and the second sliding arm can achieve linkage and synchronous sliding toward each other; moreover, when the first sliding arm slides away from the second sliding arm manually or by other means, the transmission component can also drive the second sliding arm to slide away from the first sliding arm synchronously, so that the first sliding arm and the second sliding arm can slide away from each other synchronously, so that the first sliding arm and the second sliding arm can achieve linkage and synchronous sliding away from each other, that is, the bracket light-transmitting groove 0223 is opened, so as to facilitate the placement of the artificial lens 07.

[0080] That is to say, the intraocular lens support 02 provided in the present solution forms a support light-through groove 0223 between the free ends of the first sliding arm and the second sliding arm, and first drives the first sliding arm to slide toward the second sliding arm through the driving assembly, and in this process the second sliding arm is linked and synchronously slides toward the first sliding arm through the transmission assembly, thereby making the two sliding arms synchronously slide toward each other, and making the support light-through groove 0223 synchronously compress the two loops of the intraocular lens 07, that is, making the two loops of the intraocular lens 07 be subjected to the same compression force at the same time, thereby ensuring the stability of the intraocular lens 07 during the compression process; of course, the present solution is designed in this way to avoid driving the two sliding arms synchronously to slide toward each other at the same time, which helps to simplify the compression driving mechanism of the intraocular lens support 02.

[0081] Specifically, the free end of the first slide arm includes a first pressing plate, and the free end of the second slide arm includes a second pressing plate. Figure 3 As shown, the first pressing plate and the second pressing plate are arranged opposite to each other along the sliding direction of the first sliding arm or the second sliding arm, and are both located in the accommodating cavity 035; wherein, as Figure 5 As shown, the free ends of the first sliding arm and the second sliding arm both include a pressing plate 0201, that is, the free end of the first sliding arm is the first pressing plate, and the free end of the second sliding arm is the second pressing plate, and the first pressing plate and the second pressing plate are arranged opposite to each other in the horizontal direction;

[0082] like Figure 5As shown, the first pressing plate is provided with a first semi-transparent light groove 02231 on the end surface facing the second pressing plate, and the second pressing plate is provided with a second semi-transparent light groove 02232 on the end surface facing the first pressing plate, and a bracket light groove 0223 is formed between the first semi-transparent light groove 02231 and the second semi-transparent light groove 02232. In this way, when the first sliding arm and the second sliding arm slide synchronously away from each other, the bracket light groove 0223 can be opened, and when the first sliding arm and the second sliding arm slide synchronously toward each other, the bracket light groove 0223 can be matched, so as to facilitate the disassembly and assembly of the artificial lens 07; of course, the first sliding arm and the second sliding arm can slide synchronously toward each other until the first semi-transparent light groove 02231 and the second semi-transparent light groove 02232 are matched, and the bracket light groove 0223 formed when the first semi-transparent light groove 02231 and the second semi-transparent light groove 02232 are matched can be an elliptical light groove.

[0083] Furthermore, the first semi-transparent groove 02231 is provided with a first haptic groove for placing the first haptic of the artificial lens 07, and a first haptic groove chamfer is provided between the first semi-transparent groove 02231 and the upper edge of the bottom of the first haptic groove;

[0084] The second semi-transparent groove 02232 is provided with a second haptic groove for accommodating the second haptic of the artificial lens 07 , and a second haptic groove chamfer is provided between the second semi-transparent groove 02232 and the upper edge of the second haptic groove bottom.

[0085] It should be noted that if Fig.10 As shown, each half-light groove of the pressing plate 0201 is provided with a haptic groove 02014 for placing a haptic of the intraocular lens 07, that is, the first half-light groove 02231 of the first pressing plate is provided with a first haptic groove, and the second half-light groove 02232 of the first pressing plate is provided with a second haptic groove, which can play a role in placing and limiting the two haptics of the intraocular lens 07, ensuring that the intraocular lens 07 is placed stably;

[0086] In addition, since the haptics of the intraocular lens 07 have a certain thickness (0.3-0.4 mm), the haptic groove 02014 can be designed to have a groove depth of 0.25 mm and a groove height of 0.5 mm. In addition, considering that the haptics of the intraocular lens 07 will form an arch after being compressed, in order to prevent the haptics of the intraocular lens from detaching from the haptic groove 02014 after becoming an arch, a transition surface needs to be provided between each semi-transparent groove and the upper edge of the bottom of the haptic groove 02014, such as Fig.10 As shown, the transition surface is the haptic groove chamfer 02015, that is, a first haptic groove chamfer is provided between the first semi-transparent groove 02231 and the upper edge of the first haptic groove bottom, and a second haptic groove chamfer is provided between the second semi-transparent groove 02232 and the upper edge of the second haptic groove bottom, so that the two haptics of the intraocular lens 07 can avoid being separated from the haptic groove 02014 when compressed;

[0087] In addition, if Fig.10 As shown, each pressing plate 0201 is composed of an upper pressing plate 02012 and a lower pressing plate 02011; Figure 5 As shown, the upper pressing plate 02012 and the lower pressing plate 02011 are connected and fixed by the pressing plate fixing screws. The upper pressing plate 02012 is made of a transparent acrylic plate with low friction, which is convenient for observing the deformation of the intraocular lens 07 during the compression process. Fig.10 As shown, the free end surface of the upper pressing plate 02012 is provided with an upper semicircular arc-shaped light-through groove (the radius may be 5 mm), and a loop groove 02014 is provided on the lower bottom surface of the upper semicircular arc-shaped light-through groove. As described above, the loop groove 02014 may have a groove depth of 0.25 mm and a groove height of 0.5 mm. The loop groove chamfer 02015 is a connecting transition surface between the loop groove 02014 and the semi-light-through groove, and both the loop groove 02014 and the loop groove chamfer 02015 are smoothed to reduce friction.

[0088] The lower pressing plate 02011 is made of metal aluminum and is oxidized. The free end surface of the lower pressing plate 02011 is provided with a lower semicircular arc light-through groove. The curvature of the upper semicircular arc light-through groove is the same as that of the lower semicircular arc light-through groove. Fig.10 As shown, a threaded hole is opened on the other side of the lower pressure plate 02011, and the threaded hole connects the lower pressure plate 02011 and the vertical rod 0202 through the fixing screws of the pressure plate and the vertical rod; of course, the setting of the loop groove 02014 is to improve the stability of the artificial lens 07 during the compression process, and the setting of the loop groove chamfer 02015 is to prevent the artificial lens from detaching from the pressure plate 0201 as the pressure increases.

[0089] Furthermore, if Figure 5 As shown, the transmission assembly includes: a transmission rod 0206, a first fixed seat 0208 and two rollers 0207;

[0090] like Figure 2 As shown, the first fixing seat 0208 is disposed on the light-transmitting base 03;

[0091] The transmission rod 0206 is arranged parallel to the first sliding arm or the second sliding arm, and the middle part thereof is rotatably connected to the first fixing seat 0208;

[0092] The two rollers 0207 are respectively vertically arranged at the two ends of the transmission rod 0206, and are respectively abutted against the first sliding arm and the second sliding arm.

[0093] Among them, Figure 2As shown, the first fixed seat 0208 is fixed on the light-transmitting base 03 and is located on the upper side between the first sliding arm and the second sliding arm. The first fixed seat 0208 can be a long fixed seat, and one end of which is fixed on the light-transmitting base 03, and the other end can be rotatably connected to the bottom of the middle part of the transmission rod 0206 through a transmission rod fixing screw; of course, the first sliding arm, the second sliding arm and the transmission rod 0206 can all be arranged in the horizontal direction; the two rollers 0207 are respectively vertically arranged at the bottom of the two ends of the transmission rod 0206, and are respectively abutted and matched with the first sliding arm and the second sliding arm. In this way, when the driving mechanism drives the first sliding arm to slide toward the second sliding arm, one end of the transmission rod 0206 will cause the transmission rod 0206 to rotate parallel to the first fixed seat 0208 based on the abutment and cooperation between the roller 0207 and the first sliding arm (as shown in FIG. Figure 5 The transmission rod 0206 will rotate clockwise), and then the other end of the transmission rod 0206 will make the second sliding arm realize linkage through the roller 0207, so that the second sliding arm will also slide toward the first sliding arm at the same time, which means that the first sliding arm and the second sliding arm will be linked to realize synchronous sliding toward each other, and the two pressure plates 0201 will be driven to compress the artificial lens 07 at the same time. Of course, when the second sliding arm is driven to slide away from the first sliding arm manually, one end of the transmission rod 0206 will make the transmission rod 0206 rotate perpendicularly to the first fixed seat 0208 (such as Figure 5 The transmission rod 0206 will rotate counterclockwise), and then the other end of the transmission rod 0206 will link with the first sliding arm through the roller 0207, so that the first sliding arm will also slide away from the second sliding arm at the same time, so that the first sliding arm and the second sliding arm will be linked to achieve synchronous sliding in opposite directions.

[0094] That is to say, the two sliding arms, through the coordinated use of the transmission rod 0206 and the two rollers 0207, can realize the linked synchronous sliding towards each other and the linked synchronous sliding away from each other, so as to achieve the effect that the two pressure plates 0201 move towards each other at the same time to synchronously compress the artificial lens 07; of course, the two pressure plates 0201 have the same movement distance and the same movement speed, so as to achieve the purpose that the two loops of the artificial lens are subjected to the same compression force at the same time, thereby ensuring the stability of the artificial lens during the compression process.

[0095] In addition, it should be noted that if Figures 5 to 8 As shown, each sliding arm includes: a slider 02052, a moving plate 0204, a stopper 0224, a crossbar 0203, a vertical rod 0202 and a pressure plate 0201; wherein, Figure 8As shown, the slider 02052 can be slidably arranged on the slide seat 02051. In fact, the number of slide seats 02051 is also two, that is, two sliders 02052 are slidably arranged on the two slide seats 02051 one by one; the moving plate 0204 is arranged on the slider 02052; the stopper 0224 is arranged on the moving plate 0204 and abuts against the roller 0207; wherein, as Figure 8 As shown, the driving mechanism is actually used to drive the first slider 02052 to slide toward the second slider 02052. The first slider 02052 is equivalent to the active slider, and the second slider 02052 is equivalent to the driven slider. The stopper 0224 arranged on the active slider can abut against the outer wall of the roller 0207, so as to facilitate the roller 0207 to make the transmission rod 0206 rotate parallel to the first fixed seat 0208, so that the two sliders 02052 can realize synchronous sliding toward each other, and the stopper 0224 arranged on the driven slider can abut against the outer wall of the roller 0207. 07 is abutted against the inner wall, so that the transmission rod 0206 can rotate perpendicularly to the first fixed seat 0208 against the roller 0207, so that the two sliders 02052 can slide synchronously in opposite directions; one end of the crossbar 0203 is fixed on the movable plate 0204, and the other end is fixed to the upper end of the vertical rod 0202. The lower end of the vertical rod 0202 is vertically fixed to one end of the pressure plate 0201, and the other end of the pressure plate 0201 is provided with a semi-transparent slot as described above; and the slider 02052 and the slide seat 02051 can adopt a cross roller slide 0205. Of course, if Figure 6 As shown, the two sliders 02052 are relatively distributed, the two cross bars 0203 are also parallel distributed, and the above components can be connected and fixed by screws. Details can be seen in the following description. Of course, the corresponding fixing screw holes can refer to the relevant illustrations.

[0096] In addition, in order to realize the automatic elastic sliding of the two sliders 02052 in opposite directions so that the two pressure plates 0201 are automatically opened to facilitate loading of the intraocular lens 07, a spring can be added between the slider 02052 and the slide seat 02051 of each cross roller slide 0205, so that the slider 02052 can slide away from the other slider 02052 based on the elastic force of the spring, that is, the two sliders 02052 can slide in opposite directions based on the elastic force of their respective springs; wherein, Figure 7 As shown, the spring can be arranged between the two guide rails on the slide 02051, and one end of the spring is connected to the inner end of the bottom of the slider 02052, and the other end is connected to the outer ends of the two guide rails of the slide 02051, so that the slider 02052 slides toward the outer end of the slide 02051 under the elastic force of the spring. Of course, this can also avoid the two sliders 02052 from sliding synchronously in opposite directions by manual means.

[0097] In this scheme, if Figure 5As shown, the device for measuring the axial displacement of an intraocular lens under compression force provided by the embodiment of the utility model further includes: a second fixing seat 0210 and a baffle 0209;

[0098] The driving part includes: digital dial indicator 0211;

[0099] like Figure 8 As shown, the digital micrometer 0211 is fixed to the slide 02051 through the second fixing seat 0210;

[0100] The baffle 0209 is disposed on the first sliding arm, and the measuring rod 02112 of the digital micrometer 0211 is used to push the baffle 0209 so that the first sliding arm slides toward the second sliding arm.

[0101] The second fixing seat 0210 and the baffle 0209 are located on the same side of the sliding seat 02051. The structures of the two can be referred to in Figure 8As shown; the measuring rod 02112 of the digital micrometer 0211 is linked with the baffle 0209, that is, the measuring rod 02112 of the digital micrometer 0211 and the baffle 0209 are kept in contact and matched. As mentioned above, the two sliders 02052 can slide elastically back to back. In this way, when the digital micrometer 0211 is adjusted to retract its measuring rod 02112, the baffle 0209 will also move toward the measuring rod of the digital micrometer 0211 with the slider 02052. During this process, the baffle 0209 will keep in contact with the measuring rod 02112 of the digital micrometer 0211, thereby avoiding the hindrance to the synchronous elastic sliding of the two sliders 02052, and the moving direction of the measuring rod 02112 of the digital micrometer 0211 is parallel to the sliding direction of the first sliding arm, and the process of driving the first sliding arm and the second sliding arm to slide synchronously towards each other is: first, rotate the differential cylinder 02111 of the digital micrometer so that the digital micrometer The measuring rod 02112 of the micrometer extends and pushes the baffle 0209, thereby driving the first sliding arm (actually driving the active sliding arm) to slide toward the second sliding arm, and then based on the abutment between the two rollers 0207 and the two blocks 0224, the power transmission rod 0206 and the roller 0207 where the second sliding arm is located drive the second sliding arm (actually driving the driven sliding arm) to slide toward the first sliding arm at the same time, so that the two sliding arms drive the two pressure plates 0201 to synchronously compress the artificial lens 07, and the two pressure plates 0201 move toward each other (compress) synchronously with the same movement distance and movement speed; and because the measuring rod of the digital micrometer 0211 drives the first sliding arm to slide toward the second sliding arm by pushing the baffle 0209, there are no restrictions on the meshing tightness and tooth pitch between gears, so the compression distance control accuracy of the artificial lens 07 is basically determined by the measurement accuracy of the digital micrometer 0211, and the compression diameter control accuracy can reach 0.01mm. Of course, rotating the differential cylinder 02111 of the digital micrometer in the opposite direction (such as counterclockwise) causes the measuring rod 02112 of the digital micrometer to retract, thereby avoiding obstruction to the synchronous elastic sliding of the two sliders 02052 in opposite directions; that is, by rotating the differential cylinder 02111 of the digital micrometer, the telescopic adjustment of the measuring rod 02112 of the digital micrometer is achieved.

[0102] It can be seen that the present scheme controls the movement distance (compression diameter) of the intraocular lens pressure plate through the digital micrometer 0211, and drives the intraocular lens bracket 02 through the digital micrometer 0211 to achieve the purpose of adjusting the compression diameter, so that the compression diameter can be adjusted from 8.0mm to 20.0mm; of course, at present, most of the compression diameters of intraocular lenses are 10.0mm / 11.0mm, and the compression diameters of a few intraocular lenses with special implantation positions range from 10.0mm to 15.0mm. In this way, the measuring device of the present scheme can meet the measurement needs of intraocular lenses with different compression diameters, thereby helping to improve the versatility of the measuring device.

[0103] In addition, as described above, the components of each sliding arm can be fixed by screw connection; Fig.10 As shown, the pressing plate 0201 and the vertical pole 0202 are connected by fixing screws of the pressing plate and the vertical pole. Figure 5 As shown, the vertical rod 0202 is connected to the horizontal rod 0203 by the vertical rod and horizontal rod fixing screws, the horizontal rod 0203 is connected to the movable plate 0204 by the horizontal rod and movable plate fixing screws, the movable plate 0204 is connected to the cross roller slide 0205 by the movable plate slide fixing screws, the two ends of the transmission rod 0206 are respectively in contact with the two cross roller slides 0205 through the rollers 0207, and the first fixed seat 0208 is connected to the light-transmitting base 03 by the first fixed seat fixing screws, as shown in FIG. Fig. 9 As shown, the digital dial gauge 0211 is connected to the second fixing seat 0210 through the digital dial gauge fixing screws. Figure 8 As shown, the second fixed seat 0210 is connected to the slide seat 02051 of the cross roller slide 0205 via the second fixed seat fixing screws, and the baffle 0209 is connected to the slider 02052 of the cross roller slide 0205 via the baffle fixing screws.

[0104] In addition, in order to better understand this measuring device, the following is a brief introduction to its use process:

[0105] First, close the intraocular lens bracket and clear the digital dial gauge reading. By adjusting the digital dial gauge to 3mm, the compression diameter is exactly 10mm, which is the compression diameter (adjust the digital dial gauge to 4mm, the compression diameter is exactly 11mm, and so on). Adjust the compression diameter of the intraocular lens bracket (that is, make the two sliding arms slide synchronously in opposite directions) to exceed the total diameter of the intraocular lens, then insert the intraocular lens (at this time, the loop of the intraocular lens is not compressed), and then measure the optical imaging position h0 on the upper surface of the intraocular lens through the optical measurement system (such as Fig.15 Then adjust the digital micrometer to the compression diameter, and finally measure the optical imaging position h1 on the upper surface of the intraocular lens through the optical measurement system (as shown in Fig.16The difference between h1 and h0 is the axial displacement of the intraocular lens under compression force.

[0106] Specifically, Fig.11 As shown, the light-transmitting base 03 includes: a base base 032 and a light-transmitting glass 031;

[0107] The base base 032 is arranged in the optical path of the optical measurement system and is provided with a receiving cavity 035. The bottom of the receiving cavity 035 is provided with a base light-through groove 036, which is aligned with the bracket light-through groove 0223.

[0108] The light-through glass 031 blocks the light-through groove 036 of the base of the accommodating cavity 035;

[0109] The artificial lens support 02 is arranged on the base 032. The structure of the base 032 can be referred to Fig.11 As shown, the accommodating cavity 035 is opened on one side of the top of the base pedestal 032, and can be a cylindrical cavity, and the base light-transmitting groove 036 can be centrally distributed at the bottom of the cylindrical cavity, that is, the base light-transmitting groove 036 can be located at the center of the bottom of the accommodating cavity 035, and the optical path of the optical measurement system can pass through the base light-transmitting groove 036; the artificial lens bracket 02 is arranged on the other side of the top of the base pedestal 032. Of course, the light-transmitting base 03 of this solution is designed in this way, which can realize the partial light-transmitting design of the light-transmitting base 03, avoid the light-transmitting design of the entire light-transmitting base 03, that is, avoid the base pedestal 032 being made of light-transmitting materials, thereby helping to reduce the production cost of the light-transmitting base 03.

[0110] In addition, it should be noted that the light-transmitting glass 031 can be made of quartz glass with a refractive index of 1.519 (@546nm), and can be sealed in the light-transmitting groove 036 of the base by gluing to prevent the solution in the receiving cavity 035 from leaking; the base base 032 is made of metal aluminum and is oxidized, and its receiving cavity 035 (hollow cavity) is used to hold the solution to achieve the effect of simulating the aqueous humor of the human eye; Fig.11 As shown, one side of the top of the base 032 is provided with two second threaded holes 034 and a plurality of first threaded holes 033, and the first threaded holes 033 are fixed by cross roller slide screws (such as Fig. 9 As shown), the slide seat 02051 is fixed on the base 032, and the second threaded hole 034 fixes the first fixing seat 0208 on the base 032 through the first fixing seat fixing screw.

[0111] Furthermore, when the storage cavity 035 of the light-transmitting base 03 is filled with simulated humor solution, the fluctuation of the liquid level of the solution will cause the optical imaging of the intraocular lens 07 on the CCD component 06 (optical imaging system) to shake, so it is necessary to cover the liquid surface to eliminate the fluctuation of the liquid level; accordingly, Figure 2As shown, the device for measuring the axial displacement of an intraocular lens under compression force provided by the embodiment of the utility model further includes a transparent cover sheet 01;

[0112] The transparent cover sheet 01 is arranged on the top of the receiving cavity 035 of the transparent base 03 to cover the liquid surface of the solution in the receiving cavity 035. The transparent cover sheet 01, the intraocular lens support 02 and the transparent base 03 are equivalent to the measuring tool of the intraocular lens 07.

[0113] Furthermore, if Fig.12 As shown, the light-transmitting cover sheet 01 comprises: a cover sheet base 011 and a light-transmitting cover glass 012;

[0114] The cover plate base 011 is arranged across the top of the accommodating cavity 035, and a boss 013 is provided at the bottom thereof for covering the liquid surface of the solution in the accommodating cavity 035. The cover plate base 011 is also provided with a cover plate light-through groove 014, which is aligned with the bracket light-through groove 0223;

[0115] The light-transmitting cover glass 012 blocks the cover light-transmitting groove 014. The side wall of the boss 013 of the cover base 011 can be abutted and matched with the side wall of the accommodating cavity 035, which can play a role in placement and limiting, so that the cover base 011 can be conveniently placed on the cavity top of the accommodating cavity 035, and it is also convenient for the cover base 011 to be clamped on the cavity top of the accommodating cavity 035, and the bottom surface of the boss 013 is used to cover the liquid surface of the solution in the accommodating cavity 035, and the cover base 011 can be a long cover base; the cover light-transmitting groove 014, the bracket light-transmitting groove 0223 and the base light-transmitting groove 036 are located on the same optical axis, that is, the optical path of the optical measurement system can pass through the cover light-transmitting groove 014, the bracket light-transmitting groove 0223 and the base light-transmitting groove 036 in sequence. Of course, the transparent cover plate 01 of the present solution is designed in this way to realize a partial transparent design of the transparent cover plate 01, avoiding the entire transparent cover plate 01 adopting a transparent design, that is, avoiding the cover plate base 011 being made of transparent material, thereby helping to reduce the production cost of the transparent cover plate 01.

[0116] In addition, it should be noted that the transparent cover glass 012 can be made of quartz glass with a refractive index of 1.519 (@546nm), and is sealed in the cover light groove 014 by gluing; the cover base 011 is made of metal aluminum and is oxidized, such as Fig.12 As shown, the distances from both ends of the cover base 011 to the center of the cover light-through groove 014 may be different, wherein the distance from one end of the cover base 011 to the center of the cover light-through groove 014 is a first distance, and the distance from the other end of the cover base 011 to the center of the cover light-through groove 014 is a second distance. The first distance is longer than the second distance, which makes it convenient to disassemble and assemble the cover base 011.

[0117] In this scheme, if Fig.13As shown, the device for measuring the axial displacement of an intraocular lens under compression force provided by the embodiment of the utility model further includes a light-transmitting aperture 04;

[0118] like Fig.14 As shown, the light aperture 04 is used to be arranged between the light slot 0223 of the artificial lens holder 02 and the bottom of the light receiving cavity 035 of the light base 03. The light aperture 04 can be made of black hard plastic; Fig.13 As shown, the upper part of the light-transmitting aperture 04 is a hollow truncated cone structure, and the lower part is a hollow disc structure (equivalent to the base), and can be set on the light-transmitting glass 031 of the light-transmitting base 03. The truncated cone structure is used to simulate the pupil of the human eye. The size of the pupil of the human eye is affected by the light intensity and varies in size (2-5mm). Therefore, the through hole on the upper surface of the truncated cone is set with different specifications according to the pupil size, including 2mm, 3mm, 4.5mm, 5mm, etc., which can be used interchangeably; in addition, Fig.10 As shown, the free end surface of the lower pressing plate 02011 is provided with a lower pressing plate groove surface 02016 as a reserved groove surface for the subsequent addition of the light aperture 04, that is, the lower pressing plate groove surface 02016 matches the truncated cone curvature of the light aperture 04, and the through hole on the upper surface of the truncated cone of the light aperture 04 fits the lower surface of the artificial lens 07 placed in the light slot 0223 of the bracket; and, by adjusting the artificial lens bracket 02 to reach a compression diameter of 10.0 mm, the light aperture 04 (which may also include a simulated cornea component) is added for other optical performance tests of the artificial lens, which include but are not limited to the optical power of the artificial lens, image quality (MTF), etc. That is to say, the present solution adds a light aperture 04 in the measuring device for other optical performance tests of the artificial lens.

[0119] In addition, in order to facilitate further understanding of this measuring device, the measuring steps are introduced as follows:

[0120] 1. Fix the measuring fixture at the center of the optical path of the optical measuring system so that the parallel light of the optical measuring system passes through the light passing center of the measuring fixture (i.e. the three light passing slots mentioned above);

[0121] 2. Add 0.9% sodium chloride solution to the storage cavity of the optical base of the measuring tool to simulate the aqueous humor environment of the human eye, so that the solution fills the storage cavity of the optical base;

[0122] 3. Adjust the digital micrometer 0211 to close the intraocular lens holder 02 (the two sliders 02052 may not be closed at this time, and the distance between the two pressure plates may be 7.0 mm, that is, the short axis of the light-transmitting slot of the elliptical holder may be 7.0 mm), clear the reading of the digital micrometer 0211, adjust the digital micrometer 0211 to separate the intraocular lens holder 02, until the reading of the digital micrometer 0211 is "3.0 mm / 4.0 mm", clear the reading of the digital micrometer 0211, and this position is the compression diameter (the compression diameter is 10.0 mm / 11.0 mm at this time). If the compression diameter needs to be adjusted to other compression diameters, the same can be applied;

[0123] 4. By adjusting the digital micrometer 0211, the distance between the intraocular lens brackets 02 exceeds the total diameter of the intraocular lens, the two haptics of the intraocular lens are placed in the haptic grooves 02014 of the two pressing plates 0201, and the compression of the intraocular lens haptics is observed through the transparent upper pressing plate 02012 to ensure that the haptics of the intraocular lens are not compressed at this time, and the boss 013 on the lower surface of the cover plate base 011 in the transparent cover plate 01 is placed in the groove (i.e., the storage cavity 035) of the transparent base 03;

[0124] 5. Find the optical image on the upper surface of the intraocular lens through the optical measurement system, and record the position of the optical image as h0;

[0125] 6. By adjusting the digital micrometer 0211, the intraocular lens bracket 02 is slowly closed to the compressed diameter, and step 5 is repeated, and the position of the optical imaging is recorded as h1;

[0126] 7. h1-h0 is the axial displacement of the intraocular lens under compression force.

[0127] That is to say, in order to solve the defects of the current measuring device, this scheme designs two measuring seats (i.e., pressure plates) that can move towards each other at the same time, and the distance and speed of the simultaneous movement towards each other are the same, so that the compression diameter can be adjusted according to different measurement requirements, and during the compression process, the haptics of the artificial lens are subjected to uniform compression force at the same time. At the same time, it is combined with a light-transmitting base, and the base can be added with a solution to simulate the intraocular aqueous humor environment. In combination with an optical measurement system, the distance moved by the optical imaging of the artificial lens in the uncompressed state and the compressed state is measured. This distance is the axial displacement of the artificial lens under the compression force.

[0128] Simply put, this scheme measures the axial displacement of artificial lenses under compression force based on the principle of optical imaging. Its advantages are high measurement accuracy, good stability, accuracy of measurement results, and high repeatability. It can be applied to artificial lenses of different materials, haptic designs, and compression diameters. The measurement results can be accurate to 0.001mm.

[0129] In summary, this scheme provides a device for measuring the axial displacement of an intraocular lens under compression force based on the principle of optical imaging, which is mainly used to measure the axial displacement index of an intraocular lens under compression force. The measuring device is mainly composed of an intraocular lens bracket with adjustable compression diameter, a light-transmitting base (i.e., light-transmitting base 03) and a light-transmitting cover sheet (i.e., light-transmitting cover sheet 01). The intraocular lens bracket with adjustable compression diameter is composed of two intraocular lens pressure plates (i.e., intraocular lens brackets) that can move toward each other at the same time, a cross-roller slide, a transmission rod, a digital micrometer, etc. The intraocular lens pressure plate is fastened by screws in an upper and lower part. The two intraocular lens pressure plates are respectively connected to the cross-roller slides, and the two cross-roller slides are linked by a transmission rod to achieve the purpose of the two intraocular lens pressure plates being able to move toward each other at the same time. The slide is connected to a digital micrometer, which controls the movement distance (compression diameter) of the intraocular lens pressure plate. The compression diameter can be adjusted from 8mm to 20mm according to the test needs, and the control accuracy is high, up to 0.01mm. The center of the light-transmitting base is installed with quartz glass with a refractive index of 1.519 (@546nm) to achieve the purpose of light transmission, and a solution can be added to the cavity of the base (i.e., the storage cavity 035) to achieve the effect of simulating the aqueous humor environment of the human eye. The center of the light-transmitting cover plate is also installed with quartz glass with a refractive index of 1.519 (@546nm) to achieve the purpose of light transmission. The intraocular lens bracket extends into the simulated aqueous humor solution of the light-transmitting base, and the bracket light-transmitting groove, the base light-transmitting groove, and the cover plate light-transmitting groove composed of the two intraocular lens pressure plates are on the same optical axis, and the above light-transmitting grooves are the light-transmitting centers of their respective components. First, close the intraocular lens bracket, clear the digital micrometer reading, adjust the digital micrometer to 3mm, and the compression diameter is exactly 10mm, which is the compression diameter (adjust the digital micrometer to 4mm, and the compression diameter is exactly 11mm, and so on), adjust the compression diameter of the intraocular lens bracket to exceed the total diameter of the intraocular lens, and then insert the intraocular lens (the loop of the intraocular lens is not compressed at this time), measure the optical imaging position h0 on the upper surface of the intraocular lens through the optical measurement system, adjust the digital micrometer to the compression diameter, and then measure the optical imaging position h1 on the upper surface of the intraocular lens through the optical measurement system. The difference between h1 and h0 is the axial displacement of the intraocular lens under compression force. This scheme measures the axial displacement of the intraocular lens under compression force based on the principle of optical imaging. Its advantages are high measurement accuracy, good stability, high accuracy and repeatability of measurement results, and can be applied to intraocular lenses of different materials, loop designs and compression diameters.

[0130] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0131] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for measuring the axial displacement of an intraocular lens under compression, characterized in that: include: Optical measurement system, intraocular lens holder (02) and light-transmitting base (03); The light-transmitting base (03) is arranged in the optical path of the optical measurement system and is provided with a receiving cavity (035) for receiving a solution simulating human aqueous humor; The artificial lens support (02) is arranged on the light-transmitting base (03), and a portion of the support is located in the accommodating cavity (035) and is provided with a support light-transmitting groove (0223), wherein the support light-transmitting groove (0223) is used to place the artificial lens (07) and is capable of applying the same compression force to two haptics of the artificial lens (07) at the same time; The optical measurement system is used to measure the position of the optical imaging of the upper surface of the intraocular lens in a non-compressed state and in a compressed state respectively.

2. The device for measuring the axial displacement of an intraocular lens under compression according to claim 1, characterized in that: The artificial lens support (02) comprises: a sliding seat (02051), a first sliding arm, a second sliding arm, a transmission assembly and a driving assembly; The sliding seat (02051) is arranged on the light-transmitting base (03); The first sliding arm and the second sliding arm are relatively slidably arranged on the sliding seat (02051), and their free ends are both located in the accommodating cavity (035) and the bracket light-through groove (0223) is formed between the free ends; The driving assembly is arranged on the slide seat (02051) and is used to drive the first slide arm to slide toward the second slide arm; The transmission assembly is arranged on the light-transmitting base (03), and is used at least to drive the second slide arm to slide synchronously toward the first slide arm when the driving assembly drives the first slide arm to slide toward the second slide arm, so that the first slide arm and the second slide arm slide synchronously toward each other.

3. The device for measuring the axial displacement of an intraocular lens under compression according to claim 2, characterized in that: The free end of the first sliding arm comprises a first pressing plate, and the free end of the second sliding arm comprises a second pressing plate, the first pressing plate and the second pressing plate are arranged opposite to each other along the sliding direction of the first sliding arm or the second sliding arm, and are both located in the accommodating cavity (035); The first pressing plate is provided with a first semi-light-transmitting groove (02231) on the end surface facing the second pressing plate, and the second pressing plate is provided with a second semi-light-transmitting groove (02232) on the end surface facing the first pressing plate, and the bracket light-transmitting groove (0223) is formed between the first semi-light-transmitting groove (02231) and the second semi-light-transmitting groove (02232).

4. The device for measuring the axial displacement of an intraocular lens under compression according to claim 3, characterized in that: The first semi-transparent groove (02231) is provided with a first haptic groove for accommodating the first haptic of the artificial lens (07); a first haptic groove chamfer is provided between the first semi-transparent groove (02231) and the upper edge of the groove bottom of the first haptic groove; The second semi-transparent groove (02232) is provided with a second haptic groove for accommodating the second haptic of the artificial lens (07); a second haptic groove chamfer is provided between the second semi-transparent groove (02232) and the upper edge of the groove bottom of the second haptic groove.

5. The device for measuring the axial displacement of an intraocular lens under compression according to claim 2, characterized in that: The transmission assembly comprises: a transmission rod (0206), a first fixed seat (0208) and two rollers (0207); The first fixing seat (0208) is arranged on the light-transmitting base (03); The transmission rod (0206) is arranged in parallel with the first sliding arm or the second sliding arm, and the middle part thereof is rotatably connected to the first fixing seat (0208); The two rollers (0207) are respectively vertically arranged at the two ends of the transmission rod (0206), and are respectively abutted against the first sliding arm and the second sliding arm.

6. The device for measuring the axial displacement of an intraocular lens under compression according to claim 2, characterized in that: Also includes: A second fixing seat (0210) and a baffle (0209); The driving part comprises: a digital display micrometer (0211); The digital micrometer (0211) is fixed to the slide seat (02051) via the second fixing seat (0210); The baffle (0209) is arranged on the first sliding arm, and the measuring rod of the digital micrometer (0211) is used to push the baffle (0209) so that the first sliding arm slides toward the second sliding arm.

7. The device for measuring the axial displacement of an intraocular lens under compression according to claim 1, characterized in that: The light-transmitting base (03) comprises: a base pedestal (032) and light-transmitting glass (031); The base base (032) is arranged in the optical path of the optical measurement system and is provided with the accommodating cavity (035); the bottom of the accommodating cavity (035) is provided with a base light-through groove (036) which is aligned with the bracket light-through groove (0223); The light-transmitting glass (031) blocks the base light-transmitting groove (036) of the accommodating cavity (035); The artificial lens support (02) is arranged on the base pedestal (032).

8. The device for measuring the axial displacement of an intraocular lens under compression according to claim 1, characterized in that: Also includes a light-transmitting cover plate (01); The light-transmitting cover sheet (01) is arranged on the top of the receiving cavity (035) of the light-transmitting base (03) and is used to cover the liquid surface of the solution in the receiving cavity (035).

9. The device for measuring the axial displacement of an intraocular lens under compression according to claim 8, characterized in that: The light-transmitting cover sheet (01) comprises: a cover sheet base (011) and a light-transmitting cover glass (012); The cover sheet base (011) is arranged across the top of the accommodating cavity (035), and a boss (013) is provided at the bottom thereof for covering the liquid surface of the solution in the accommodating cavity (035). The cover sheet base (011) is also provided with a cover sheet light-transmitting groove (014) which is aligned with the bracket light-transmitting groove (0223); The light-transmitting cover glass (012) blocks the light-transmitting groove (014) of the cover glass.

10. The device for measuring the axial displacement of an intraocular lens under compression according to claim 1, characterized in that: Also includes a light-clearing aperture (04); The light-through aperture (04) is used to be arranged between the support light-through groove (0223) of the artificial lens support (02) and the bottom of the accommodating cavity (035) of the light-through base (03).

Images