Smart multifocal lenses and multifocal astigmatism lenses

Abstract

The present invention is an intelligent multifocal lens and a multifocal astigmatism lens. The intelligent multifocal lens includes an optical center area, which includes a near vision zone, a conversion vision zone and a distance vision zone. The additional diopter of the near vision zone is negatively correlated with the radius of the near vision zone. The diopter drop of the conversion vision zone falls within the range of 0.1D to 0.6D, and the near vision zone and the conversion vision zone have the same diopter at the junction between each other. The conversion vision zone and the distance vision zone have the same diopter at the junction between each other. The present disclosure designs the additional diopter of the near vision zone according to the size of the pupil radius to meet the vision correction needs of all age groups. The smoothing design can achieve intelligent adjustment, reduce the maladaptive state of vision conversion and the conversion time, and reduce spherical aberration. The intelligent multifocal astigmatism lens has a dual diopter change pattern to improve the refractive error of patients with presbyopia and astigmatism.

Description

Technical Field

[0001] The present disclosure relates to a multifocal lens, in particular to a multifocal lens with intelligent adjustment effect, and a multifocal astigmatism lens combined with astigmatism. Background Art

[0002] Most of the existing multifocal lenses require a long time of fitting by an optometrist. Due to the large difference in the degree of near vision zone and long distance vision zone, it is easy for the wearer to have maladaptation and blurred vision in the middle distance vision zone. The pupil of a person tends to shrink with age, which will cause the problem of unclear near vision to become more serious. Therefore, a single near vision zone size design cannot meet the wearing comfort and vision correction needs of different age groups.

[0003] In addition, among all patients with refractive errors, in addition to myopia and hyperopia, which have the highest proportion, more than 30% of patients have astigmatism due to corneal deformation. The cause of astigmatism comes from the deformation of the cornea into a rugby-shaped double curvature long and short axis surface. Therefore, when the eyeball adjusts the refraction, the long and short axis light cannot be focused on the same focal point. In order to achieve effective astigmatism correction, the lens must not rotate in the eye to maintain the correct astigmatism axis so that the two axis light can focus on the same focal point at the same time.

[0004] In view of this, how to provide an intelligent multifocal astigmatism lens that can design a near vision zone according to pupil size and has the function of intelligently adjusting the degree difference between the near vision zone and the distance vision zone is still one of the goals that the industry urgently needs to study. Summary of the invention

[0005] An embodiment of the present disclosure is a smart multi-focal lens.

[0006] In one embodiment of the present disclosure, a smart multifocal lens includes an optical center area, which includes a near vision zone, a conversion vision zone, and a distance vision zone. The additional diopter of the near vision zone is negatively correlated with the radius of the near vision zone. The conversion vision zone surrounds the near vision zone, wherein the diopter reduction of the conversion vision zone falls within the range of 0.1D to 0.6D, wherein there is a junction between the near vision zone and the conversion vision zone. The diopter of the near vision zone at the junction is the same as the diopter of the conversion vision zone at the junction. The distance vision zone surrounds the near vision zone and the conversion vision zone. There is a junction between the conversion vision zone and the distance vision zone, and the diopter of the conversion vision zone at the junction is the same as the diopter of the distance vision zone at the junction.

[0007] In one embodiment of the present disclosure, the radius of the optical center region is in the range of about 4 micrometers to 4.5 micrometers.

[0008] In one embodiment of the present disclosure, the distance between the inner diameter and the outer diameter of the conversion region is in a range of about 0.2 micrometers to 0.7 micrometers.

[0009] In one embodiment of the present disclosure, a radius of the close-range region is in a range of about 1.3 microns to 2.1 microns.

[0010] In one embodiment of the present disclosure, the additional diopter of the near vision zone falls within a range of about 0.25D to 3.50D.

[0011] In one embodiment of the present disclosure, the near vision zone includes a first area and a second area surrounding the first area.

[0012] In one embodiment of the present disclosure, the refractive power of the second area decreases as the distance from the center of the smart multifocal lens increases.

[0013] In one embodiment of the present disclosure, the first region is substantially a flat region, and the first region is connected to the second region.

[0014] In one embodiment of the present disclosure, the radius of the first region falls within a range of 0.00 micrometer to 1.00 micrometer.

[0015] In one embodiment of the present disclosure, the additional diopter of the distance zone is in the range of about 0.5D to 1.50D.

[0016] An embodiment of the present disclosure is a smart multifocal astigmatism lens.

[0017] In one embodiment of the present disclosure, a smart multifocal lens includes an optical center area, which includes a near vision area, a conversion vision area, and a distance vision area. The additional diopter of the near vision area is negatively correlated with the radius of the near vision area. The conversion vision area surrounds the near vision area, wherein the diopter drop of the conversion vision area falls within the range of 0.1D to 0.6D, wherein there is a junction between the near vision area and the conversion vision area. The diopter of the near vision area at the junction is the same as the diopter of the conversion vision area at the junction. The distance vision area surrounds the near vision area and the conversion vision area. There is a junction between the conversion vision area and the distance vision area, and the diopter of the conversion vision area at the junction is the same as the diopter of the distance vision area at the junction. The optical center area has astigmatism diopter and astigmatism axis, and is configured to correct astigmatism.

[0018] In one embodiment of the present disclosure, the radius of the optical center region is in the range of about 4 micrometers to 4.5 micrometers.

[0019] In one embodiment of the present disclosure, the distance between the inner diameter and the outer diameter of the conversion region is in a range of about 0.2 micrometers to 0.7 micrometers.

[0020] In one embodiment of the present disclosure, a radius of the close-range region is in a range of about 1.3 microns to 2.1 microns.

[0021] In one embodiment of the present disclosure, the additional diopter of the near vision zone falls within a range of about 0.25D to 3.50D.

[0022] In one embodiment of the present disclosure, the near vision zone includes a first area and a second area surrounding the first area.

[0023] In one embodiment of the present disclosure, the refractive power of the second area decreases as the distance from the center of the smart multifocal lens increases.

[0024] In one embodiment of the present disclosure, the first region is substantially a flat region, and the first region is connected to the second region.

[0025] In one embodiment of the present disclosure, the radius of the first region falls within a range of 0.00 micrometer to 1.00 micrometer.

[0026] In one embodiment of the present disclosure, the additional diopter of the distance zone is in the range of about 0.5D to 1.50D.

[0027] In one embodiment of the present disclosure, the astigmatism power is in the range of approximately -0.5D to -3.50D.

[0028] In one embodiment of the present disclosure, the astigmatism axis degree falls within a range of about 5 degrees to 180 degrees.

[0029] In the above embodiment, the smart multifocal lens is designed with additional diopter in the near vision zone according to the size of the pupil radius to meet the vision correction needs of all age groups. By designing the smooth diopter drop in the conversion vision zone, the effect of intelligent adjustment, reducing the maladaptation of vision conversion and the conversion time can be achieved. By designing the diopter drop slowly in the distance vision zone, the effect of reducing spherical aberration can be achieved. In addition, the smart multifocal astigmatism lens can have a design with a double diopter change pattern, which can also improve the refractive error of patients with presbyopia and astigmatism. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. 4 is a top view of a smart multifocal lens according to an embodiment of the present disclosure.

[0031] Figure 2 FIG. 4 is a diagram showing the relationship between the diopter and radius of a smart multifocal lens according to an embodiment of the present disclosure.

[0032] Figure 3 Based on Figure 2 Data on the refractive power range of different age groups.

[0033] Figure 4AFIG. 4 is a top view of a smart multifocal astigmatism lens according to an embodiment of the present disclosure.

[0034] Figure 4B FIG. 4 is a top view of a smart multifocal astigmatism lens according to another embodiment of the present disclosure.

[0035] Figure 5 FIG. 4 is a diagram showing the diopter distribution of an astigmatism lens according to an embodiment of the present disclosure.

[0036] Figure 6 FIG. 4 is a diagram showing the relationship between the diopter and radius of a multifocal astigmatism lens along different lenses according to an embodiment of the present disclosure.

[0037]

Main component symbol description

[0038] 100: Smart multifocal lenses

[0039] OZ: Optical Center Zone

[0040] 110: Near vision area

[0041] 112: First Area

[0042] 114: Second Area

[0043] 116,118,122: Junction

[0044] 120: Switch visual area

[0045] 130: Long-distance vision area

[0046] R1, R2, R21, R22, R23, R24, R3: Radius

[0047] r1: inner diameter

[0048] r2: outer diameter

[0049] C: Center

[0050] D: Distance

[0051] S1,S2,S3,S4,AS1,AS2,AS3: Curve

[0052] 200,200a: Intelligent multifocal astigmatism lenses

[0053] 210,210a: Multifocal astigmatism optical center area

[0054] 220,220a: Thickening stable area

[0055] AX1,AX2,AX3: Axial DETAILED DESCRIPTION

[0056] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some existing conventional structures and elements will be depicted in a simple schematic manner in the drawings. And for the sake of clarity, the thickness of the layers and regions in the drawings may be exaggerated, and the same element symbols represent the same elements in the description of the drawings.

[0057] Figure 1 1 is a top view of a smart multifocal lens 100 according to an embodiment of the present disclosure. The smart multifocal lens 100 includes an optical center zone OZ, and the optical center zone OZ includes a near vision zone 110, a conversion vision zone 120, and a distance vision zone 130. The optical center zone OZ has a radius R1, and the radius R1 falls within a range of about 4 microns to 4.5 microns. The near vision zone 110 has a radius R2, and the radius R2 falls within a range of about 1.3 microns to 2.1 microns. The conversion vision zone 120 surrounds the near vision zone 110. The distance D between the inner diameter r1 and the outer diameter r2 of the conversion vision zone 120 falls within a range of about 0.2 microns to 0.7 microns. The distance vision zone 130 surrounds the conversion vision zone 120 and the near vision zone 110. Specifically, the diameter of the optical center zone OZ can cover the pupil size of the wearer. In the present embodiment, the diameter of the optical center zone OZ is about 8 microns to 9 microns, but the present disclosure is not limited thereto.

[0058] The near vision zone 110 includes a first area 112 and a second area 114 surrounding the first area 112. The first area 112 is substantially a plano area, that is, the diopter of the first area 112 is a constant value. The radius R3 of the first area 112 falls within the range of 0.00 micrometer to 1.00 micrometer, and the first area 112 is connected to the second area 114. The diopter of the second area 114 decreases as the distance from a center C of the smart multifocal lens 100 increases. In other words, the diopter of the second area 114 increases in the radial direction.

[0059] Figure 2 FIG. 4 is a diagram showing the relationship between the diopter and radius of a smart multifocal lens according to an embodiment of the present disclosure. Figure 2 The relationship between the diopter and radius of four smart multifocal lenses is exemplified in FIG. The additional diopter ADD of the second area 114 of the near vision zone 110 disclosed in the present invention falls within the range of about 0.25D to 3.50D. In other words, the difference in diopter between the second area 114 and the first area 112 falls within the range of 25 degrees to 300 degrees. Figure 2As can be seen from the data in FIG. 1 , in this embodiment, the second area 114 in which the additional diopter ADD falls within the range of about 0.75D to 2.25D is taken as an example. In this embodiment, the first area 112 with a radius of about 0.50 micrometers is taken as an example. The distribution and radius of the additional diopter ADD of the second area 114 of the near vision zone 110 are designed according to age, which will be described in detail later.

[0060] The diopter reduction of the conversion vision zone 120 falls within the range of 0.1D to 0.6D. In other words, the diopter difference between the conversion vision zone 120 and the near vision zone 110 falls within the range of about 10 degrees to 60 degrees. For example, in one embodiment, the distance D between the inner diameter r1 and the outer diameter r2 of the conversion vision zone 120 is about 0.5 micrometers. The diopter reduction of the conversion vision zone 120 is designed according to the additional diopter ADD of the second area 114 of the near vision zone 110, thereby achieving the effect of adjusting the diopter difference between near and far distances, and avoiding maladaptation or blurred vision.

[0061] The additional diopter of the distance vision zone 130 is within a range of about 0.5D to 1.50D. In other words, the difference in diopter between the distance vision zone 130 and the conversion vision zone 120 is within a range of about 50 degrees to 150 degrees. By controlling the diopter difference of the distance vision zone 130 within this range, the occurrence of spherical aberration can be reduced.

[0062] Depend on Figure 2 It can be seen that the diopter of the optical center zone OZ is continuous with the change of the radius R1. Specifically, the diopter of the second zone 114 is continuous with the diopter of the first zone 112. In other words, the diopter at the junction 116 of the second zone 114 and the first zone 112 (i.e., at a radius of 0.50 microns) is the same and non-stepped. Similarly, the diopter of the conversion vision zone 120 is continuous with the diopter of the near vision zone 110, and the diopter of the distance vision zone 130 is also continuous with the diopter of the conversion vision zone 120. In other words, the diopter at the junction 118 of the near vision zone 110 and the conversion vision zone 120 (i.e., at a radius of 2.00 microns) is the same and non-stepped. The diopter at the junction 122 of the distance vision zone 130 and the conversion vision zone 120 (i.e., at a radius of 2.50 microns) is also the same and non-stepped. This helps avoid maladaptation or blurred vision.

[0063] Figure 3 Based on Figure 2 Data on the diopter range for different age groups. Figure 2 and Figure 3 . Figure 2 The diopter and radius data corresponding to the curves S1, S2, S3, and S4 correspond to Figure 3 The age and diopter data of groups 1, 2, 3, and 4 in the embodiment are shown in FIG. In the present embodiment, the wearers are divided into four groups according to their age ranges, namely, group 1 for 40 to 50 years old, group 2 for 50 to 60 years old, group 3 for 60 to 70 years old, and group 4 for 70 to 80 years old. In other words, groups 1 to 4 correspond to the younger to older age ranges, respectively. It should be understood that the above age groups are only examples, and those skilled in the art can adjust the number of groups and the size of the age range according to development needs. For example, in other embodiments, 5 years old may be used as the age range, and divided into eight age groups to define the diopter and radius of the near vision zone 110.

[0064] As can be seen from the figure, the near vision zone 110 of group 1 has a radius R21, and the radius R21 is 2.0 microns. In other embodiments, the radius R21 can fall within a range of about 1.9 microns to 2.1 microns. The additional diopter ADD of the second area 114 of the near vision zone 110 of group 2 falls within a range of about 0.50D to 1.00D, that is, the difference in diopter between the second area 114 and the first area 112 of group 2 falls within a range of about 100 degrees to 150 degrees. Figure 3 As can be seen from the curve S1 in FIG. 1 , the diopter of the curve S1 decreases from approximately -2.25D to -3.00D, that is, the diopter difference of the curve S1 is approximately 75 degrees.

[0065] The near vision zone 110 of group 2 has a radius R22, and the radius R22 is 1.8 microns. In other embodiments, the radius R22 may fall within a range of about 1.7 microns to 1.9 microns. The additional diopter ADD of the second area 114 of the near vision zone 110 of group 2 falls within a range of about 1.00D to 1.50D, that is, the difference in diopter between the second area 114 and the first area 112 of group 2 falls within a range of about 100 degrees to 150 degrees. Figure 3 As can be seen from the curve S2 in FIG. 1 , the diopter of the curve S2 decreases from approximately -1.75D to -3.00D, that is, the diopter difference of the curve S2 is approximately 125 degrees.

[0066] The near vision zone 110 of group 3 has a radius R23, and the radius R23 is 1.6 microns. In other embodiments, the radius R23 may fall within a range of about 1.5 microns to 1.7 microns. The additional diopter ADD range of the second area 114 of the near vision zone 110 of group 3 falls within a range of about 1.50D to 2.00D, that is, the difference in diopter between the second area 114 and the first area 112 of group 3 falls within a range of about 150 degrees to 200 degrees. Figure 2As can be seen from the curve S3 in FIG. 1 , the diopter of the curve S3 decreases from approximately -1.25D to -3.00D, that is, the diopter difference of the curve S3 is approximately 175 degrees.

[0067] The radius R24 of the near vision zone 110 of group 4 is 1.4 microns. In other embodiments, the radius R24 may fall within a range of about 1.3 microns to 1.5 microns. The additional diopter ADD of the second area 114 of the near vision zone 110 of group 4 falls within a range of about 2.00D to 2.50D, that is, the difference in diopter between the second area 114 and the first area 112 of group 4 falls within a range of about 200 degrees to 250 degrees. Figure 2 As can be seen from the curve S4 in FIG. 1 , the diopter of the curve S4 decreases from approximately -0.75D to -3.00D, that is, the diopter difference of the curve S4 is approximately 225 degrees.

[0068] It can be seen from curves S1 to S4 that the additional diopter ADD of the near vision zone 110 is negatively correlated with the radius R2. Generally speaking, the pupil size tends to become smaller as the age increases. Therefore, by grouping the additional diopter ADD of the near vision zone 110 according to age, the needs of various age groups for correcting vision in the near vision zone 110 can be closer. In addition, since the radius R2 of the near vision zone 110 is designed according to the pupil size, such a design can also reduce the discomfort of wearing. The above design can be applied to soft contact lenses, hard contact lenses, frame glasses, etc., and used to correct presbyopia, astigmatism, etc. In other words, according to such a design, the effect of correcting presbyopia of various age groups can also be achieved.

[0069] It can be seen from the curves S1 to S4 that the diopter of the conversion vision zone 120 will continue to decrease slowly with the additional diopter ADD of the near vision zone 110. By controlling the diopter decrease of the conversion vision zone 120 within the range of 0.1D to 0.6D, the vision can be smoothly switched between the near vision zone 110 and the far vision zone 130, thereby reducing the maladaptation of vision switching and the switching time. The radius of the second area 114 of the present disclosure may vary according to the design of different groups. Figure 3 In FIG. 1 , only the sizes of the second region 114 and the conversion visual area 120 of the curve S1 are marked.

[0070] It can be seen from the curves S1 to S4 that the diopter reduction of the distance vision zone 130 is controlled within a range of about 0.5D to 1.50D. Generally speaking, the radius of the distance vision zone 130 varies according to the size of the optical center zone OZ, the near vision zone 110, and the conversion vision zone 120. For example, a smart multifocal lens with a radius R1 of 4 microns in the optical center zone OZ may have a near vision zone 110 with a radius R2 of 1.4 microns, a conversion vision zone 120 with a distance D of 0.5 microns, and a distance vision zone 130 with a radius R2 of 2.1 microns. Therefore, as long as the degree difference in the distance vision zone 130 is controlled within a range of 50 degrees to 150 degrees, the occurrence of spherical aberration can be effectively reduced.

[0071] Figure 4A FIG. 2 is a top view of a smart multifocal astigmatism lens 200 according to an embodiment of the present disclosure. The smart multifocal astigmatism lens 200 comprises a multifocal astigmatism optical center area 210 and an astigmatism thickening stabilization area 220. The astigmatism thickening stabilization area 220 of this embodiment is located below the lens and is a prism-ballast type astigmatism lens. For example, this embodiment may be a soft contact lens.

[0072] Figure 4B FIG. 2 is a top view of a smart multifocal astigmatism lens 200a according to another embodiment of the present disclosure. The smart multifocal astigmatism lens 200a also includes a multifocal astigmatism optical center area 210a and an astigmatism thickening stabilization area 220a. The present embodiment has two astigmatism thickening stabilization areas 220a, which are located on the left and right sides of the lens, respectively, and is a double slab-off type astigmatism lens.

[0073] The astigmatism optical center areas 210, 210a mentioned above all include the aforementioned near vision area, conversion vision area and distance vision area. The astigmatism thickening stabilization areas 220, 220a are configured to prevent the lens from rotating after wearing to maintain the correct correction function, and the stabilization area design is not limited to the above types.

[0074] Figure 5 FIG. 1 is a diopter distribution diagram of an astigmatism lens according to an embodiment of the present disclosure. Specifically, the astigmatism optics is a dual diopter variation type, including spherical diopter (Power), astigmatism diopter (Cylinder Correction), and astigmatism axis (Axis). Figure 5 The embodiment in the embodiment is based on the spherical diopter of -3.00D (300 degrees), the astigmatism diopter of -1.25D (125 degrees of astigmatism), and the astigmatism axis of 180 degrees. Figure 5As shown, the diopter of the lens angle of 90 degrees and the lens angle of 270 degrees is approximately -4.25D, and the diopter of the lens angle of 0 degrees and the lens angle of 180 degrees is approximately -3.00D.

[0075] Figure 6 FIG. 1 is a graph showing the relationship between the diopter and radius of a multifocal astigmatism lens along different lenses according to an embodiment of the present disclosure. Figure 4A and Figure 6 . Figure 4A , an axial direction AX1 of 0 degrees, an axial direction AX2 of 45 degrees, and an axial direction AX3 of 90 degrees are respectively shown. Figure 6 The curves AS1, AS2, and AS3 in the figure represent the relationship between the diopter and the radius along the axial direction AX1, AX2, and AX3, respectively. In this embodiment, the spherical diopter of -4.00D, the astigmatism diopter of -1.25D, the axial degree of 180 degrees, and the additional diopter of +1.25D (i.e., the presbyopia addition degree) are taken as an example. It can be seen that the multifocal astigmatism lens disclosed in the present invention can simultaneously meet the following requirements: Figure 2 The relationship between the diopter and radius and the requirements for the astigmatism diopter and astigmatism axis are shown. In this way, such a design can provide patients with astigmatism and presbyopia with clear vision both at far and near.

[0076] In some embodiments, the spherical diopter range of the multifocal astigmatism lens can be in the range of +10.0D to -10.0D, the astigmatism diopter can be in the range of -0.50D to -3.50D, the astigmatism axis can be in the range of 5° to 180°, and the additional diopter can be in the range of +0.75D to +3.50D. The above optical designs can be set on the same side of the lens (front arc or back arc) or on a single side of the lens respectively, and both can have the effects of intelligent multifocal and astigmatism correction.

[0077] According to the above, the smart multifocal lens disclosed herein is designed with additional diopter in the near vision zone according to the size of the pupil radius to meet the vision correction needs of all age groups. By designing the smooth diopter reduction in the conversion vision zone, the effects of smart adjustment, reduction of maladaptation of vision conversion and conversion time can be achieved. By designing the diopter slow reduction in the distance vision zone, the effect of reducing spherical aberration can be achieved. In addition, according to the astigmatism axis and the astigmatism diopter, the smart multifocal lens can also have the effect of correcting astigmatism.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A plurality of smart multifocal lenses, characterized in that: Each of these smart multifocal lenses includes: A photocenter region, including: a near vision zone, wherein an additional diopter of the near vision zone is negatively correlated with a radius of the near vision zone; a conversion vision zone surrounding the near vision zone, wherein a diopter reduction of the conversion vision zone falls within a range of 0.1D to 0.6D, wherein there is a boundary between the near vision zone and the conversion vision zone, and the diopter of the near vision zone at the boundary is the same as the diopter of the conversion vision zone at the boundary, a radius of the near vision zone falls within a range of 1.3 mm to 2.1 mm, and the additional diopter of the near vision zone falls within a range of 0.25D to 3.50D; and a distance vision zone surrounding the near vision zone and the conversion vision zone, wherein the conversion vision zone and the distance vision zone have a boundary therebetween, and the diopter of the conversion vision zone at the boundary is the same as the diopter of the distance vision zone at the boundary; The additional diopter of one of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.9 mm to 2.1 mm is smaller than the additional diopter of the other of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.7 mm to 1.9 mm, the additional diopter of one of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.7 mm to 1.9 mm is smaller than the additional diopter of the other of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.5 mm to 1.7 mm, and the additional diopter of one of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.5 mm to 1.7 mm is smaller than the additional diopter of the other of the smart multifocal lenses when the radius of the near vision zone is in the range of 1.3 mm to 1.5 mm.

2. The smart multifocal lens according to claim 1, characterized in that: A radius of the optical center region falls within a range of 4 mm to 4.5 mm.

3. The smart multifocal lens according to claim 1, characterized in that: The distance between an inner diameter and an outer diameter of the conversion visual area falls within a range of 0.2 mm to 0.7 mm.

4. The smart multifocal lens according to claim 1, characterized in that: The near vision zone includes a first area and a second area surrounding the first area.

5. The smart multifocal lens according to claim 4, characterized in that: The refractive power of the second area decreases as the distance from a center of the smart multi-focal lens increases.

6. The smart multifocal lens according to claim 4, characterized in that: The first area is substantially a flat area, and the first area is connected to the second area.

7. The smart multifocal lens according to claim 4, characterized in that: A radius of the first region falls within a range of 0.00 mm to 1.00 mm.

8. The smart multifocal lens according to claim 1, characterized in that: The additional diopter of the distance vision zone is in the range of +0.5D to +1.50D.

9. A plurality of multifocal astigmatism lenses, characterized in that: Each of the multifocal astigmatism lenses comprises: A photocenter region, including: a near vision zone, wherein an additional diopter of the near vision zone is negatively correlated with a radius of the near vision zone; a conversion vision zone surrounding the near vision zone, wherein a diopter reduction of the conversion vision zone falls within a range of 0.1D to 0.6D, wherein there is a boundary between the near vision zone and the conversion vision zone, and the diopter of the near vision zone at the boundary is the same as the diopter of the conversion vision zone at the boundary, a radius of the near vision zone falls within a range of 1.3 mm to 2.1 mm, and the additional diopter of the near vision zone falls within a range of 0.25D to 3.50D; and a distance vision zone surrounding the near vision zone and the conversion vision zone, wherein the conversion vision zone and the distance vision zone have a junction therebetween, and the diopter of the conversion vision zone at the junction is the same as the diopter of the distance vision zone at the junction; wherein the additional diopter of the near vision zone of one of the multifocal astigmatic lenses when the radius is in the range of 1.9 mm to 2.1 mm is smaller than the additional diopter of the near vision zone of the other of the multifocal astigmatic lenses when the radius is in the range of 1.7 mm to 1.9 mm, and the near vision zone of one of the multifocal astigmatic lenses The additional diopter when the radius of the visual zone is in the range of 1.7 mm to 1.9 mm is less than the additional diopter when the radius of the near visual zone of the other of the multifocal astigmatic lenses is in the range of 1.5 mm to 1.7 mm, the additional diopter when the radius of the near visual zone of one of the multifocal astigmatic lenses is in the range of 1.5 mm to 1.7 mm is less than the additional diopter when the radius of the near visual zone of the other of the multifocal astigmatic lenses is in the range of 1.3 mm to 1.5 mm, and the optical center area has an astigmatism diopter and an astigmatism axis, configured to correct astigmatism.

10. The multifocal astigmatism lens according to claim 9, characterized in that: A radius of the optical center region falls within a range of 4 mm to 4.5 mm.

11. The multifocal astigmatism lens according to claim 9, characterized in that: The distance between an inner diameter and an outer diameter of the conversion visual area falls within a range of 0.2 mm to 0.7 mm.

12. The multifocal astigmatism lens according to claim 9, characterized in that: The near vision zone includes a first area and a second area surrounding the first area.

13. The multifocal astigmatism lens according to claim 12, characterized in that: The refractive power of the second area decreases as the distance from a center of the multifocal astigmatism lens increases.

14. The multifocal astigmatism lens according to claim 12, characterized in that: The first area is substantially a flat area, and the first area is connected to the second area.

15. The multifocal astigmatism lens according to claim 12, characterized in that: A radius of the first region falls within a range of 0.00 mm to 1.00 mm.

16. The multifocal astigmatism lens according to claim 9, characterized in that: The additional diopter of the distance vision zone is in the range of +0.5D to +1.50D.

17. The multifocal astigmatism lens according to claim 9, characterized in that: The astigmatism diopter falls within the range of -0.5D to -3.50D.

18. The multifocal astigmatism lens according to claim 9, characterized in that: The astigmatism axis degree falls within the range of 5 degrees to 180 degrees.

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