Intraocular lens processing method and intraocular lens

Abstract

The present invention proposes an artificial lens processing method and an artificial lens, which relates to the field of artificial lens production. The artificial lens processing method includes the following steps: molding an artificial lens semi-finished product through a mold, the artificial lens semi-finished product includes an optical zone and a haptic region, and the haptic region is located in the circumference of the optical zone; keeping the mold in a mold-closed state; removing part of the structure of the mold to reveal the haptic region; and processing the haptic region into a supporting haptic. The method directly processes the haptic region into a supporting haptic, avoiding the problems of repositioning and accidental falling caused by demolding; reducing the relative movement that may occur between the artificial lens semi-finished product and the mold when demolding in the existing process, and the surface of the artificial lens semi-finished product that is not revealed is more closely attached to the surface of the mold cavity when being processed, reducing the possibility of fracture of the haptic region. The artificial lens proposed by the present invention has higher precision than the artificial lens processed by the existing process.

Description

Technical Field

[0001] The invention relates to the field of artificial lens production, and in particular to an artificial lens processing method and an artificial lens. Background Art

[0002] In the related art, the intraocular lens includes an optical zone for correcting refractive errors and a support haptic for support. The molding process requires first molding the optical zone of the intraocular lens and the haptic area to be processed, and then removing the upper mold to mill the semi-finished intraocular lens located in the lower mold, so that the haptic area to be processed forms a support haptic shape with a preset outer contour as required. The above process has the following problems: when disassembling the mold, the semi-finished intraocular lens may adhere to the upper mold, causing the semi-finished intraocular lens to fall off accidentally, and putting the semi-finished intraocular lens adhered to the upper mold back into the lower mold for processing will produce additional positioning errors, thereby affecting the processing accuracy. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an intraocular lens processing method, which can improve the processing accuracy of the intraocular lens semi-finished product.

[0004] The present invention also provides an artificial lens produced by using the artificial lens processing method.

[0005] The intraocular lens processing method according to the first aspect of the present invention is used to process an intraocular lens, wherein the intraocular lens includes a support haptic with a preset haptic shape, and comprises the following steps:

[0006] Molding an intraocular lens semi-finished product by a mold, wherein the intraocular lens semi-finished product comprises an optical zone and a haptic region, wherein the haptic region is connected to the optical zone and is located in the circumference of the optical zone;

[0007] Keeping the mold in a closed mold state;

[0008] removing a portion of the mold structure to reveal the haptic region;

[0009] The haptic region is processed into the support haptic.

[0010] The lens processing method according to the embodiment of the present invention has at least the following beneficial effects: the method does not need to separate the upper and lower molds when processing the artificial lens semi-finished product, and the haptic area is directly processed into a supporting haptic, and there is no need to re-place the artificial lens semi-finished product, thus avoiding the problems of repositioning and lens falling off caused by demolding; and because the upper and lower molds do not need to be separated during the processing, the relative movement that may occur between the artificial lens semi-finished product and the mold during demolding in the existing process is reduced, and the gap between the unvisible surface of the artificial lens semi-finished product and the surface of the mold cavity is reduced. The unvisible surface of the artificial lens semi-finished product has a higher degree of fit with the surface of the mold cavity when being processed. When the haptic area of ​​the artificial lens semi-finished product is milled, the artificial lens semi-finished product as a whole is less likely to shake and less likely to fly out of the mold cavity. The above effects further increase the processing yield and processing accuracy of the artificial lens.

[0011] According to some embodiments of the present invention, when removing part of the structure of the mold to reveal the haptic region, firstly, the part of the structure of the mold is removed to form a notch, and the notch makes the haptic region visible along one side of the axial direction of the optical zone; then, a milling cutter is used to extend into the notch in a direction opposite to the direction of the surface where the haptic region is visible, and the haptic region is milled to form the support haptic.

[0012] According to some embodiments of the present invention, when processing the haptic region into the support haptic, the haptic region is divided into several layers along the axial direction of the optical zone, and the haptic region is milled layer by layer to process into the support haptic.

[0013] According to some embodiments of the present invention, when the haptic region is milled layer by layer to form the haptic, the milling cutter is fed along a direction perpendicular to the optical axis of the optical zone between milling different layers.

[0014] According to some embodiments of the present invention, before starting to mill the last layer of the haptic region, the milling debris is continuously cleared with an air flow.

[0015] According to some embodiments of the present invention, before starting to mill the last layer of the haptic region, liquid is injected into the surface of the artificial lens semi-finished product; the liquid continues to cover the exposed surface of the artificial lens semi-finished product when milling the last layer of the haptic region; when milling the last layer of the haptic region, part of the liquid is able to penetrate into the gap between the side of the haptic region away from the notch and the mold.

[0016] According to some embodiments of the present invention, part of the structure of the mold is removed by milling to reveal the haptic region.

[0017] According to some embodiments of the present invention, when a portion of the structure of the mold is removed by milling, the cutting depth along the axial direction of the optical zone is greater than the distance from the surface of the mold to the lower surface of the mold cavity forming the haptic region.

[0018] According to some embodiments of the present invention, after the haptic region is processed into the support haptic, the side of the mold having the notch is fixed, and force is applied to the side of the mold facing away from the surface of the artificial lens to deform the mold, thereby separating the artificial lens from the mold.

[0019] According to the artificial lens of the second aspect of the present invention, the artificial lens is made by the artificial lens processing method as described in any one of the above embodiments.

[0020] The intraocular lens according to the embodiment of the present invention has at least the following beneficial effects: compared with conventionally processed intraocular lenses, the processing accuracy of the intraocular lens semi-finished product is improved due to the use of the method in the embodiment of the present invention, and the intraocular lens of the present invention has higher accuracy.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 It is an overall schematic diagram of an intraocular lens semi-finished product according to some embodiments of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the semi-finished intraocular lens in the mold;

[0025] Figure 3 is a cross-sectional view of the semi-finished intraocular lens in the mold before processing;

[0026] Figure 4 for Figure 3 A schematic top view of the mold with part of the mold removed;

[0027] Figure 5 for Figure 4 A cross-sectional view of the semi-finished intraocular lens in the mold;

[0028] Figure 6 for Figure 3 A schematic top view of the mold with part of the mold removed;

[0029] Figure 7 for Figure 3A schematic top view of the mold with part of the mold removed;

[0030] Figure 8 for Figure 4 Schematic top view with the midloop region partially removed;

[0031] Fig. 9 for Figure 8 A partial enlarged view of the middle A;

[0032] Fig.10 for Figure 8 A cross-sectional view of the semi-finished intraocular lens in the mold;

[0033] Fig.11 for Fig.10 Schematic diagram of the semi-finished intraocular lens being injected with liquid;

[0034] Fig.12 for Fig.11 Schematic diagram of processing the intraocular lens semi-finished product into an intraocular lens;

[0035] Fig.13 Schematic diagram of an intraocular lens.

[0036] Reference numerals:

[0037] Intraocular lens semi-finished product 100, optical zone 200, haptic region 300, haptic groove 310, support haptic 400, liquid 500;

[0038] Upper die 10, lower die 20, notch 30. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] In order to facilitate the understanding of those skilled in the art, the “axial direction of the optical zone” referred to in the present invention specifically refers to the extension direction of the optical axis of the optical zone 200 .

[0045] Please refer to Figure 1 and Fig.12 As shown, the present invention proposes an intraocular lens processing method for processing an intraocular lens, wherein the intraocular lens includes a support haptic 400 with a preset haptic shape, and comprises the following steps: molding an intraocular lens semi-finished product 100 through a mold, wherein the intraocular lens semi-finished product 100 includes an optical zone 200 and a haptic region 300, wherein the haptic region 300 is connected to the optical zone 200 and is located in the circumference of the optical zone 200; keeping the mold in a mold-closed state; removing part of the structure of the mold to reveal the haptic region 300; and processing the haptic region 300 into the support haptic 400.

[0046] It should be noted that after the intraocular lens processing method of the present invention molds the intraocular lens semi-finished product 100, the mold needs to remain in a closed state during the process of removing part of the mold structure and processing the haptic area 300 into the supporting haptic 400, so as to avoid the influence of mold removal on the intraocular lens semi-finished product 100.

[0047] The existing method for processing artificial lenses requires opening the mold and processing the artificial lens located on the surface of the lower mold cavity. After the mold is opened, the molded artificial lens semi-finished product 100 may adhere to the upper mold 10, which not only requires manual removal of the artificial lens semi-finished product 100 and replacement in the lower mold cavity, thereby affecting the positioning accuracy of the artificial lens semi-finished product 100, but also increases the overall shaking of the artificial lens semi-finished product 100 during processing, thereby making it easier to fly out of the lower mold cavity; it may also accidentally fall off the surface of the upper mold 10 before being manually removed, thereby being affected by the impact of falling and losing surface quality or even being scrapped.

[0048] The present method directly removes part of the structure of the mold when processing the semi-finished intraocular lens 100, so the haptic area 300 can be processed into the support haptic 400 without separating the upper mold 10 and the lower mold 20, thereby avoiding the problems of repositioning and lens falling off caused by demolding.

[0049] On the other hand, in the existing method for processing artificial lenses, after the artificial lens semi-finished product 100 is molded out, the artificial lens semi-finished product 100 is attached to the surface of the mold cavity. However, in the process of opening the mold, the artificial lens semi-finished product 100 will be affected by the viscosity of the upper mold cavity surface and move relative to the surface of the lower mold cavity originally used to form the artificial lens semi-finished product 100, which reduces the degree of fit between the artificial lens semi-finished product 100 and the surface of the lower mold cavity, and also affects the positioning accuracy of the artificial lens semi-finished product 100, increasing the overall shaking of the artificial lens semi-finished product 100 when being processed, thereby making it easier to fly out of the lower mold cavity.

[0050] Since the present method does not need to separate the upper and lower molds during the processing, the relative movement between the artificial lens semi-finished product 100 and the mold when the mold is removed is avoided, thereby reducing the gap between the unvisible surface of the artificial lens semi-finished product 100 and the surface of the mold cavity. The unvisible surface of the artificial lens semi-finished product 100 is more closely fitted with the surface of the mold cavity during processing. When the haptic area 300 of the artificial lens semi-finished product 100 is milled, the artificial lens semi-finished product 100 as a whole is less likely to shake, thereby reducing the possibility of the artificial lens semi-finished product 100 flying out of the mold cavity.

[0051] As for the specific method of removing part of the structure of the mold to reveal the loop area 300, without departing from the inventive concept of the present invention, the structure of the mold can be removed by machining methods such as turning, milling, and drilling, thereby avoiding the upper mold 10 and the lower mold 20 from being separated from each other when removing part of the structure of the mold.

[0052] It should be noted that the term "revealing the haptic region" in the present invention refers to making the surface of the haptic region 300 visible to the outside world. When the surface of the haptic region 300 is visible to the outside world, the tool can directly process the haptic region 300. Without departing from the inventive concept of the present invention, the present invention does not limit the specific shape of the mold structure to be removed. Those skilled in the art can adjust the mold structure to be removed according to the size requirements of the intraocular lens, the shape requirements of the intraocular lens, and the mold structure used for molding the semi-finished intraocular lens 100.

[0053] For further information, please refer to Figure 2-4 As shown, Figure 2 The schematic diagram of the intraocular lens semi-finished product 100 in the mold, and the upper mold 10 is not shown; in some embodiments, when removing part of the mold structure to reveal the haptic region 300, first remove part of the mold structure to form a notch 30, and the notch 30 reveals the haptic region 300 along one side of the axial direction of the optical zone 200; the above steps enable the milling cutter to extend into the notch 30 and process the haptic region 300, and enable the milling cutter to extend into the notch 30 in the opposite direction to the surface where the haptic region 300 is revealed and mill the haptic region 300 to form the support haptic 400. Compared with other machining methods, milling has higher machining accuracy, and can make the support haptic 400 have higher accuracy.

[0054] As mentioned above, the present invention is not limited to the specific shape of the removed mold structure, and those skilled in the art can remove the mold structure according to actual needs so that the mold forms a notch 30 with different contours.

[0055] Please refer to Figure 5 , Figure 7 As shown, Figure 7 The outline of the support haptic 400 is schematically shown in the figure. In some embodiments, a portion of the upper mold 10 used for molding the semi-finished intraocular lens 100 is removed and a notch 30 is formed. The notch 30 only makes the haptic area 300 that needs to be removed visible, so that the milling cutter can extend into the notch 30 to process the haptic area 300 into the support haptic 400. When the milling cutter does not mill through the haptic area 300 in the up-down direction, since both surfaces of the haptic area 300 in the up-down direction are not completely visible, the haptic area 300 is still clamped by the upper mold 10 and the lower mold 20 in the up-down direction respectively, and the semi-finished intraocular lens 100 is less likely to shake due to milling, and the processing stability is stronger.

[0056] Please refer to Figure 6 As shown, in other embodiments, a portion of the upper mold 10 for molding the semi-finished intraocular lens 100 is removed to form a notch 30 , and the notch 30 makes the upward surface of the entire semi-finished intraocular lens 100 visible.

[0057] As a preferred embodiment, please refer to Figure 4 ,in Figure 4 4 shows the outline of the support haptic 400. A portion of the upper mold 10 used for molding the semi-finished intraocular lens 100 is removed to form a notch 30. The outline of the notch 30 is a rounded rectangle. The length of the rounded rectangle is greater than the length of the outer outline of the intraocular lens, and the width of the rounded rectangle is greater than the width of the outer outline of the intraocular lens. The shape of the notch 30 is conducive to simplifying the tool path of the milling machine tool, and is convenient for processing the semi-finished intraocular lens 100.

[0058] Furthermore, the length of the rounded rectangle is greater than the length of the outer contour of the intraocular lens by 0.1-1 mm. Controlling the length of the rounded rectangle within the above range can produce the required contour of the intraocular lens when the semi-finished intraocular lens 100 is milled, and at the same time, the semi-finished intraocular lens 100 can be clamped by the upper mold 10 and the lower mold 20, and the semi-finished intraocular lens 100 is less likely to shake due to milling, and the processing stability is stronger. As a preferred solution, the length of the rounded rectangle is greater than the length of the outer contour of the intraocular lens by 0.5-0.8 mm; as a more preferred solution, the length of the rounded rectangle is greater than the length of the outer contour of the intraocular lens by 0.2-0.4 mm.

[0059] Furthermore, in some embodiments, part of the structure of the mold is removed by milling and the haptic region 300 is processed into the support haptic 400, so that the method can be implemented on the same processing equipment, thereby reducing the time for process switching.

[0060] Further, in some embodiments, when removing a portion of the structure of the mold by milling, the cutting depth along the axial direction of the optical zone 200 is greater than the distance from the surface of the mold to the lower surface of the mold cavity forming the haptic region 300. Through the above solution, when removing the mold structure, it can be ensured that the portion of the structure of the mold is removed at one time, forming a notch 30 that can reveal the haptic region 300.

[0061] For example, please refer to Figure 3 As shown, in some embodiments, the intraocular lens is contained in the mold, the axial direction of the optical zone 200 is parallel to the mold closing direction, and when removing the mold structure, the cutting depth is greater than the distance from the surface of the upper mold 10 to the surface of the upper mold cavity. In some embodiments, the cutting depth is greater than the distance from the surface of the upper mold 10 to the surface of the upper mold cavity by 0.03-0.1mm; for example, if the distance from the surface of the upper mold 10 to the surface of the upper mold cavity is 2mm, the cutting depth can be 2.06mm; in some preferred embodiments, the cutting depth is greater than the distance from the surface of the upper mold 10 to the surface of the upper mold cavity by 0.05-0.08mm.

[0062] Without departing from the inventive concept of the present invention, those skilled in the art may add a margin to the design dimensions of the loop region 300 in the up and down directions to prevent the milling cutter from making the loop region 300 too thin when removing the mold structure.

[0063] For further information, please refer to Figure 4 , Figure 5 , Figure 8-11 As shown, in some embodiments, when processing the haptic region 300 into the support haptic 400, the haptic region 300 is divided into several layers along the axial direction of the optical zone 200, and the haptic region 300 is milled layer by layer to process into the support haptic 400. The above scheme is conducive to reducing the vibration of the tool on the entire intraocular lens semi-finished product 100 when processing the haptic region 300, and increasing the processing accuracy.

[0064] It should be noted that when the haptic region 300 is subjected to layered processing along the axial direction of the optical zone 200, the thickness of each milled layer may be different; illustratively, the portion of the haptic region 300 that needs to be milled may be divided into two layers along the axial direction of the optical zone 200, and the milling cutter removes the redundant structure of the haptic region 300 twice; when the first layer of the haptic region 300 is milled, 1 / 4-3 / 4 of the thickness of the haptic region 300 may be milled; for example, if the size of the haptic region 300 along the axial direction of the optical zone 200 is 0.5 mm, the size of the first layer may be 0.2 mm; in some preferred embodiments, when the first layer of the haptic region 300 is milled, 1 / 3-2 / 3 of the thickness of the haptic region 300 may be milled; in some more preferred embodiments, when the first layer of the haptic region 300 is milled, 2 / 5-1 / 2 of the thickness of the haptic region 300 may be milled. Without departing from the inventive concept of the present invention, those skilled in the art may also divide the portion of the haptic region 300 that needs to be milled into three, four, five or more layers along the axial direction of the optical zone 200 .

[0065] For further information, please refer to Figure 4 , Figure 5 , Figure 8-11 As shown, in some embodiments, when the haptic region 300 is milled layer by layer to form the support haptic 400, the milling cutter is fed in a direction perpendicular to the optical axis of the optical zone 200 between milling different layers. The above scheme enables the milling cutter to gradually approach the theoretical contour of the intraocular lens while removing the haptic region 300 layer by layer, which is beneficial to reduce the vibration of the tool on the intraocular lens semi-finished product 100 in the direction perpendicular to the optical axis of the optical zone 200 when machining the outer contour of the intraocular lens, and improves the contour of the intraocular lens.

[0066] Exemplarily, it has been mentioned above that in some embodiments, the portion of the haptic area 300 that needs to be milled is divided into two layers along the axial direction of the optical zone 200, and the milling cutter removes the redundant structure of the haptic area 300 twice; when milling the first layer of the haptic area 300, the milling contour should be larger than the theoretical contour of the intraocular lens, for example, when milling the first layer of the haptic area 300, the milling contour should be 0.01-0.1mm larger than the theoretical contour of the intraocular lens; when milling the second layer of the haptic area 300 (that is, the last time the haptic area 300 is milled), the milling contour should coincide with the theoretical contour of the intraocular lens. In some preferred embodiments, when milling the first layer of the haptic region 300, the milled contour should be 0.02-0.08 mm larger than the theoretical contour of the intraocular lens; in some more preferred embodiments, when milling the first layer of the haptic region 300, the milled contour should be 0.03-0.05 mm larger than the theoretical contour of the intraocular lens.

[0067] Furthermore, in some embodiments, the airflow is continuously used to remove the milling debris before the last layer of the haptic region 300 is milled. The airflow is used to remove the milling debris, which can effectively reduce the scratches on the semi-finished intraocular lens caused by the debris during the milling process, thereby ensuring the surface quality of the intraocular lens.

[0068] Specifically, it has been mentioned above that the portion of the haptic region 300 that needs to be milled can be divided into two layers along the axial direction of the optical zone 200. Figure 5 , Fig.10 , Fig.12 As shown, Fig.10 is a schematic cross-sectional view of the intraocular lens semi-finished product 100 after the first milling. Fig.12 It is a schematic cross-sectional view of the intraocular lens semi-finished product 100 after the second milling; in some embodiments, the intraocular lens processing method first mills a part of the mold, and then performs a first milling on the haptic area 300 of the intraocular lens semi-finished product 100. During the above processing, a blowing device is used to continuously blow air toward the position on the mold that needs to be milled, so as to blow the milled debris away from the surface of the intraocular lens semi-finished product 100.

[0069] Furthermore, in some embodiments, before the last layer of the haptic region 300 is milled, liquid 500 is injected into the surface of the semi-finished intraocular lens 100; the liquid 500 continues to cover the surface of the semi-finished intraocular lens 100 when the last layer of the haptic region 300 is milled; when the last layer of the haptic region 300 is milled, part of the liquid 500 can penetrate into the gap between the side of the haptic region 300 away from the notch 30 and the mold. The liquid 500 covering the surface of the semi-finished intraocular lens 100 can reduce the possibility of the chips in the milling process directly falling on the surface of the semi-finished intraocular lens 100, and can also make the chips generated in the processing process be affected by the buoyancy of the liquid 500 and stay away from the surface of the semi-finished intraocular lens 100, thereby improving the surface quality of the intraocular lens produced by the processing.

[0070] On the other hand, in the process of milling the last layer of the haptic area 300, since the liquid 500 covers the surface of the artificial lens semi-finished product 100 processed by the milling cutter, the milling cutter will also be lubricated by the liquid 500 during the milling process and rotate more smoothly. At the same time, the liquid 500 can also grind the surface of the haptic area 300 due to the force of the milling cutter, further improving the surface quality of the artificial lens produced by the processing.

[0071] On the other hand, please refer to Figure 8 , Fig. 9 As shown, during the process of milling the last layer of the haptic region 300, the intraocular lens semi-finished product 100 is separated from the portion to be removed, and the milling cutter is more likely to cause the intraocular lens semi-finished product 100 to shake relative to the mold during the processing, thereby causing the intraocular lens semi-finished product 100 to fly out of the mold. The liquid 500 that can enter the gap between the haptic region 300 and the mold can eliminate the gap between the intraocular lens semi-finished product 100 and the mold, thereby reducing the shaking of the intraocular lens semi-finished product 100 relative to the mold, thereby increasing the processing accuracy.

[0072] The following describes the process of liquid 500 entering the gap between the loop area 300 and the mold in conjunction with a specific embodiment. Figure 8-12As shown, when the haptic region 300 is subjected to layered processing along the axial direction of the optical zone 200, a haptic groove 310 is milled out of the haptic region 300, and the haptic groove 310 is in a visible state, and gradually deepens during the layered processing and finally penetrates the artificial lens semi-finished product 100 after the milling cutter mills the last layer of the haptic region 300, so that the haptic region 300 forms a supporting haptic 400; the liquid 500 covering the visible surface of the artificial lens semi-finished product 100 also covers the haptic groove 310. When processing the last layer, part of the liquid 500 can contact the joint between the haptic region 300 and the mold from the haptic groove 310 penetrating the artificial lens semi-finished product 100, and enter the gap between the mold and the side of the artificial lens semi-finished product 100 away from the notch 30.

[0073] Through the above description, a person skilled in the art can determine the injection amount of the liquid 500 according to the processing specifications required for the intraocular lens, so that the liquid 500 can continue to cover the exposed surface of the intraocular lens semi-finished product 100 when milling the last layer of the haptic area 300, and part of the liquid 500 can penetrate into the gap between the haptic area 300 and the mold when milling the last layer of the haptic area 300.

[0074] Without departing from the inventive concept of the present invention, those skilled in the art may use different liquid materials as the liquid 500 injected in the above-mentioned processing process, for example, a liquid material with strong fluidity and stable chemical properties.

[0075] For further information, please refer to Fig.10 As shown, in some embodiments, after the haptic region 300 is processed into the support haptic 400, a side of the fixed mold with the notch 30 is applied to a side of the mold facing away from the surface of the intraocular lens to deform the mold, thereby separating the intraocular lens from the mold. Through the above solution, when the mold is deformed, the intraocular lens semi-finished product 100 is still in an undeformed state, and a gap is generated between the intraocular lens and the surface of the mold cavity, and the contact area between the intraocular lens and the mold is reduced, making it easier to be taken out.

[0076] In order to facilitate those skilled in the art to understand the step relationship between the various embodiments of the present invention, a preferred embodiment is provided below.

[0077] First, please refer to Figure 1 , Figure 2 , Figure 3 As shown, an intraocular lens semi-finished product 100 is molded out by a mold, and in subsequent steps, the mold is kept in a mold-closed state.

[0078] Secondly, please refer to Figure 4 , Figure 5As shown, part of the structure of the mold is removed by milling to form a notch 30, and the notch 30 makes the haptic area 300 appear on one side along the axial direction of the optical zone 200; wherein, along the axial direction of the optical zone 200, the cutting depth is greater than the distance from the mold surface to the lower surface of the mold cavity forming the haptic area 300; during the milling process of the mold, a blowing device is provided toward the processed area on the mold, and the blowing device continuously uses airflow to remove milling debris.

[0079] Secondly, please refer to Figure 8 , Fig.10 As shown, the haptic region 300 is divided into two layers along the axial direction of the optical zone 200 , and the haptic region 300 is milled layer by layer to form the support haptic 400 .

[0080] When the first layer of the haptic region 300 is milled, the milled contour is larger than the theoretical contour of the intraocular lens; the air blowing device continuously uses air flow to clear the milled debris.

[0081] Please refer to Fig.11 As shown, before the second layer of the haptic region 300 is milled, the blowing device is stopped and liquid 500 is injected into the surface of the intraocular lens semi-finished product 100. The liquid 500 continues to cover the exposed surface of the intraocular lens semi-finished product 100 when the last layer of the haptic region 300 is milled.

[0082] Please refer to Fig.11 , Fig.12 As shown, when the second layer of milling is performed on the haptic region 300 , the milled contour coincides with the theoretical contour of the intraocular lens, and part of the liquid 500 can penetrate into the gap between the side of the haptic region 300 away from the notch and the mold.

[0083] Finally, after the haptic region 300 is processed into the support haptic 400, the side of the mold with the notch 30 is fixed, and force is applied to the side of the mold facing away from the surface of the artificial lens to deform the mold, separate the artificial lens from the mold, and take out the artificial lens in the mold.

[0084] Please refer to Fig.13 As shown, Fig.13 The shape of the artificial lens shown in the figure is for illustration only and does not limit the shape of the artificial lens to be protected by the present invention; the present invention also provides an artificial lens made by any of the above embodiments. Compared with the artificial lens processed by conventional methods, the processing accuracy of the artificial lens semi-finished product 100 is improved due to the use of the method in the embodiment of the present invention, and it is less likely to cause the artificial lens semi-finished product 100 to break during the processing, and the accuracy and yield of the artificial lens of the present invention can be improved.

[0085] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. An intraocular lens processing method, for processing an intraocular lens, wherein the intraocular lens comprises a support haptic with a preset haptic shape, characterized in that: The steps include: Molding an intraocular lens semi-finished product by a mold, wherein the intraocular lens semi-finished product comprises an optical zone and a haptic region, wherein the haptic region is connected to the optical zone and is located in the circumference of the optical zone; Keeping the mold in a closed mold state; Removing a portion of the structure of the mold to form a notch, wherein the notch allows the haptic region to be revealed along one side of the axial direction of the optical zone; The haptic region is divided into several layers along the axial direction of the optical zone, and a milling cutter is used to extend into the notch in a direction opposite to the direction of the surface where the haptic region appears, and the haptic region is milled layer by layer to process the haptic region into the supporting haptic; wherein, before starting to mill the last layer of the haptic region, liquid is injected into the surface of the semi-finished intraocular lens product; the liquid continues to cover the exposed surface of the semi-finished intraocular lens product when milling the last layer of the haptic region; when milling the last layer of the haptic region, part of the liquid can penetrate into the gap between the side of the haptic region away from the notch and the mold.

2. The method for processing an intraocular lens according to claim 1, characterized in that: When the haptic region is milled layer by layer to form the support haptic, the milling cutter is fed along a direction perpendicular to the optical axis of the optical zone between milling different layers.

3. The method for processing an intraocular lens according to claim 1 or 2, characterized in that: Before commencing milling of the last layer in the haptic region, the milling debris is continuously cleared with air flow.

4. The method for processing an intraocular lens according to claim 1, characterized in that: Part of the structure of the mold is removed by milling to reveal the haptic area.

5. The method for processing an intraocular lens according to claim 4, characterized in that: When a part of the structure of the mold is removed by milling, the cutting depth along the axial direction of the optical zone is greater than the distance from the mold surface to the lower surface of the mold cavity forming the haptic area.

6. The method for processing an intraocular lens according to claim 1, characterized in that: After the haptic region is processed into the support haptic, the side of the mold with the notch is fixed, and force is applied to the side of the mold away from the surface of the artificial lens to deform the mold, thereby separating the artificial lens from the mold.

7. An artificial lens, characterized in that The intraocular lens is manufactured by the intraocular lens processing method according to any one of claims 1 to 6.

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