CN115728962A - Multifocal ophthalmic lenses - Google Patents

Multifocal ophthalmic lenses Download PDF

Info

Publication number
CN115728962A
CN115728962A CN202111014463.XA CN202111014463A CN115728962A CN 115728962 A CN115728962 A CN 115728962A CN 202111014463 A CN202111014463 A CN 202111014463A CN 115728962 A CN115728962 A CN 115728962A
Authority
CN
China
Prior art keywords
zone
diopter
multifocal ophthalmic
ophthalmic lens
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111014463.XA
Other languages
Chinese (zh)
Inventor
蔡宗旻
王玠凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yongsheng Optics Co ltd
Original Assignee
Yongsheng Optics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yongsheng Optics Co ltd filed Critical Yongsheng Optics Co ltd
Priority to CN202111014463.XA priority Critical patent/CN115728962A/en
Publication of CN115728962A publication Critical patent/CN115728962A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention provides a multifocal ophthalmic lens, which comprises an optical area and a non-optical area surrounding the optical area, wherein the diopters of different positions of the optical area continuously change along with the distance between the position and the lens central point. The invention also provides multifocal ophthalmic lenses having an optic zone comprising a refractive power D 1 Has a central area of diopter D 2 And has a diopter D 3 A second peripheral region of (2), wherein D 2 ＞D 1 ＞D 3 。

Description

Multifocal ophthalmic lens
Technical Field
The present invention relates to multifocal ophthalmic lenses that provide different correction vision zones for vision correctors, allowing the correctors to obtain a better visual perception when using the ophthalmic lenses in general, or when alternately viewing distant objects and near objects.
Background
In a conventional multifocal ophthalmic lens design, as shown in FIG. 7, a diopter value will be used in the central portion of the lens and gradually decrease from the lens center to the lens periphery (B) 0 Zone), i.e., more and more myopia corrected. However, with this design, when looking at distant objects, the eyes will see A at the same time 0 Zone (region of greater diopter value) and C 0 The zone (zone with smaller diopter value), i.e. the periphery of the lens has clear image but the center of the lens appears blurred when viewing distant objects, thereby causing discomfort in wearing, which is a blind zone of the conventional multifocal ophthalmic lens and is also a problem to be solved by the multifocal ophthalmic lens of the present invention.
Disclosure of Invention
It is an object of the present invention to provide a multifocal ophthalmic lens comprising an optic zone and a non-optic zone surrounding the optic zone, wherein the power of different positions of the optic zone varies continuously with the distance between the position and the center point of the lens. The optical zone may include: a central region having a diopter D 1 (ii) a A first peripheral zone surrounding the central zone and having a diopter D 2 (ii) a And a second peripheral zone surrounding the first peripheral zone and having a diopter D 3 Wherein D is 2 ＞D 1 ＞D 3 . In addition, the continuous variation may include two peaks C 1 And C 3 The wave crest C 1 Corresponding to the diopter D 2 The wave crest C 3 Corresponding to the diopter D 3 。
Another object of the present invention is to provide a multifocal ophthalmic lens comprising an optic zone and a non-optic zone surrounding the optic zone, the optic zone comprising: a central region having a diopter D 1 (ii) a A first peripheral region surrounding the central region and having a diopter D 2 (ii) a And a second peripheral zone surrounding the first peripheral zone and having a diopter D 3 (ii) a Wherein D 2 ＞D 1 ＞D 3 . Preferably, the diopters of different positions of the optical area continuously change along with the distance between the position and the lens central point.
It is another object of the present invention to provide a multifocal ophthalmic lens comprising an optic zone and a non-optic zone surrounding the optic zone, the optic zone comprising: zone A with one diopter D 1 (ii) a Zone B surrounding zone A and having a diopter D 2 (ii) a Zone C surrounding zone B and having a diopter D 3 (ii) a And D area surrounding the C area and having a diopter D 4 (ii) a Wherein D 1 、D 2 、D 3 And D 4 Has one of the following relationships: d 2 ＞D 1 ≥D 3 ＞D 4 、D 2 ＞D 3 ＞D 1 ＞D 4 Or D 3 ＞D 2 ＞D 1 ＞D 4 . Preferably, the optical zones are not positioned in the same locationThe diopter of the lens is continuously changed along with the distance between the position and the central point of the lens.
Generally, the central zone or zone a encompasses a center point, e.g., a geometric center, of the multifocal ophthalmic lens.
According to the present invention, the optical zone ranges from about 3 to 4.5mm extending outwardly from the center point. The optical zone may be substantially circular.
Multifocal ophthalmic lenses of the invention include, but are not limited to, contact lenses, intraocular lenses, and corneal inlays or onlays.
In one embodiment, the central region ranges from 0.15 mm to 0.45mm extending outward from the center point. The central region may be substantially circular.
In some embodiments, the first peripheral region extends 0.3-2.1 mm outward from the edge of the central region, and the second peripheral region extends 0.75-2.55 mm outward from the edge of the first peripheral region. The first peripheral region and the second peripheral region may each be substantially annular.
According to a specific embodiment of the present invention, the diopter of the optical zone at different positions varies continuously with the distance between the position and the lens center point and includes three peaks C 1 、C 2 、C 3 And two troughs T 1 、T 2 The peak C is located outward from a center point of the multifocal ophthalmic lens 1 The trough T 1 The wave crest C 2 The trough T 2 And the wave crest C 3 。
In one embodiment, the first peripheral region 105 may be further divided into regions B and C. Zone B surrounds the central region 104 (i.e., zone a), and zone C surrounds zone B. Wherein the peak C 1 In the B region, the wave crest C 2 In region C, the wave crest C 3 Then in the second peripheral region 106 (i.e., region D).
According to some embodiments of the invention, the central zone has a diopter D 1 Wave crest C 1 Corresponding to a target diopter D 2 The wave crest C 2 Corresponding to a target diopter D 3 The wave crest C 3 Corresponding to a target diopter D 4 . In some embodiments of the invention, the curve of the diopter of the optical zone varies in the following relationship: (1) D 2 ＞D 1 ≥D 3 ＞D 4 ，(2)D 2 ＞D 3 ＞D 1 ＞D 4 Or (3) D 3 ＞D 2 ＞D 1 ＞D 4 。
Drawings
Fig. 1 is a schematic view of a multifocal ophthalmic lens according to an embodiment of the invention.
Fig. 2 is a schematic diagram illustrating a curve of optical zone refractive power according to an embodiment of the invention.
FIG. 3 is a schematic view of a multifocal ophthalmic lens according to an embodiment of the invention.
Fig. 4 is a schematic diagram illustrating a curve of optical zone refractive power according to an embodiment of the invention.
Fig. 5 is a graph illustrating the curve variation of the optical zone refractive power according to an embodiment of the invention.
Fig. 6 is a flow chart of a manufacturing method according to an embodiment of the invention.
Fig. 7 is a schematic diagram showing the arrangement of diopters of a conventional multifocal ophthalmic lens.
Fig. 8 is a graph illustrating the curve variation of the optical zone refractive power according to an embodiment of the present invention.
Fig. 9 is a graph illustrating the curve variation of the optical zone refractive power according to another embodiment of the present invention.
Fig. 10 is a schematic diagram illustrating a curve of optical zone refractive power according to another embodiment of the invention.
Description of the reference numerals: 100-multifocal ophthalmic lenses; 101-center point; 102-an optical zone; 104-a central region; 105-a first peripheral region; 106-a second peripheral region; 108-a non-optical zone; d 1 ～D 4 -a diopter; c 1 ～C 3 -a peak; t is 1 ～T 2 -a wave trough; zone A, zone B, zone C, zone D-optical zone; S1-S3-step; a. The 0 Zone, B 0 Region, C 0 Zone-the conventional multifocal ophthalmic lens optic zone; a. The I Zone B I Zone, C I Zone, D I Zone-multifocal ophthalmic lens optic zone of example 1; a. The II Zone, B II Zone, C II Zone, D II Zone-the multifocal ophthalmic lens optic zone of example 2; a. The III Zone, B III Region, C III Zone, D III Zone-the multifocal ophthalmic lens optic zone of example 3.
Detailed Description
Referring to fig. 1 and 2, the multifocal ophthalmic lens 100 includes an optical zone 102 and a non-optical zone 108 surrounding the optical zone 102, and as shown in fig. 2, the optical power of the optical zone 102 changes continuously. Referring to fig. 3, the optical zone 102 may include: a central zone 104 having a diopter D 1 A first peripheral zone 105 surrounding the central zone 104 and having a refractive power D 2 And a second peripheral zone 106 surrounding the first peripheral zone 105 and having a refractive power D 3 Wherein D is 2 ＞D 1 ＞D 3 . Referring to FIG. 4, in a specific example, the curve of diopter change can include a peak C 1 、C 3 And trough T 2 The positions of the peaks and troughs are sequentially C from the center point 101 (e.g., a geometric center) of the multifocal ophthalmic lens 100 outward (the edge of the multifocal ophthalmic lens 100) 1 、T 2 And C 3 Wherein the lens area adjacent to the center point 101 may have a diopter D 1 Wave crest C 1 Corresponding to a target diopter D 2 Wave crest C 3 Corresponds to a target diopter D 3 The curve of the optical zone 102 power varies according to the following relationship: d 2 ＞D 1 ＞D 3 . The higher the diopter value is, the lower the myopia correction degree is represented; conversely, a smaller diopter value indicates a higher degree of myopic correction. The optical zone 102 may extend about 3mm outward from the center point corresponding to the average size of the pupil, for example, the optical zone 102 may be substantially circular with a radius of 3 mm.
Referring to fig. 3, the optical zone 102 may include a central zone 104, a first peripheral zone 105, and a second peripheral zone 106. The central region 104 covers a peripheral region of the central point 101, the first peripheral region 105 surrounds the central region 104, and the second peripheral region 106 surrounds the first peripheral region 105. It should be noted that the regions in fig. 3 are illustrated as concentric circles, but not limited thereto, and may also have an oval shape, for example. The central region 104 may range from 0.15 mm to 0.45mm extending from the center point 101 in a direction toward the edge of the multifocal ophthalmic lens 100, for example, the central region 104 may be generally circular with a radius of about 0.25mm to 0.3 mm.
Referring now to FIG. 4, preferably, the diopters of the optical zone 102 at different positions vary continuously with the distance between the center points 101, wherein the central zone 104 has diopter D 1 The first peripheral zone 105 has diopter D 2 The second peripheral zone 106 has a diopter D 3 . The curve of the diopter change of the optical zone 102 has the following relationship: d 2 ＞D 1 ＞D 3 . In a particular example, the curve of diopter change includes a peak C 1 、C 3 And trough T 2 Wave crest C 1 Located in the first peripheral region 105, and the peak C 3 Located in the second peripheral region 106, but the invention is not limited thereto, and the curve of diopter change may not include any peak or valley (e.g. in a smooth step shape), as long as D is satisfied 2 ＞D 1 ＞D 3 The relationship (c) is as follows. The first peripheral region 105 may range from about 0.3mm to about 2.1mm extending outward from the edge of the central region 104, or from about 1.50mm + -0.75 mm from the center point 101 extending outward from the edge of the central region 104. The second peripheral zone 106 can range from about 0.15 mm to about 3.75mm extending outward from the edge of the first peripheral zone 105 (to the edge of the optical zone 102), or from about 3.00 ± 1.50mm from the center point 101 (to the edge of the optical zone 102).
Referring now to FIG. 5 in combination, in other embodiments, the optical power of the optical zone 102 at different locations varies continuously with the distance between the location and the center point of the lens, and includes a peak C 1 、C 2 、C 3 And trough T 1 、T 2 In this case, the firstThe peripheral region 105 can be further divided into a region B surrounding the central region 104 (i.e., region a) and a region C surrounding the region B. Wherein, the wave crest C 1 Located in zone B and corresponding to a target diopter D 2 (ii) a Wave crest C 2 In zone C, corresponding to a target diopter D 3 (ii) a And the wave crest C 3 Located in the second peripheral zone 106 (i.e., zone D) corresponding to a target diopter D 4 . Preferably, the curve of the optical zone 102 power varies according to one of the following relationships: (1) D 2 ＞D 1 ≥D 3 ＞D 4 ，(2)D 2 ＞D 3 ＞D 1 ＞D 4 Or (3) D 3 ＞D 2 ＞D 1 ＞D 4 . Zone B may range from about 0.15 to 1.2mm extending outward from the edge of the central region 104, or from the edge of the central region 104 to a position 0.90 ± 0.45 away from the center point 101. The region C may range from about 0.15 mm to about 1.8mm from the edge of the region B (extending to the edge of the first peripheral region 105), or from about 1.50 ± 0.75mm from the center point 101 (extending to the edge of the first peripheral region 105).
Referring to fig. 1 and fig. 5, the optic zone 102 of the multifocal ophthalmic lens 100 of the present invention can also be designed to include or consist of the following four zones: zone A covering a peripheral region of the central point 101 and having a diopter D 1 (ii) a Zone B surrounding zone A and having a diopter D 2 (ii) a Zone C surrounding zone B and having a diopter D 3 (ii) a And D area surrounding the C area and having a diopter D 4 (ii) a Wherein D 1 、D 2 、D 3 And D 4 Having one of the following relationships: d 2 ＞D 1 ≥D 3 ＞D 4 、D 2 ＞D 3 ＞D 1 ＞D 4 Or D 3 ＞D 2 ＞D 1 ＞D 4 . The curve of the change in diopter shown in fig. 5 corresponds in particular to D 2 ＞D 3 ＞D 1 ＞D 4 . The A-D regions may be arranged in concentric circles similar to those shown in FIG. 3, but not limited thereto, and may also be in an elliptical shape, for example. Zone a may range from center point 101 toward the multifocal ophthalmic lensThe edges of sheet 100 extend 0.15 to 0.45mm in direction, for example, zone A may be generally circular with a radius of about 0.25 to 0.3 mm. Zone B may range from about 0.15 to 1.2mm extending outward from the edge of zone a, or from the edge of zone a to a location 0.90 ± 0.45 away from the center point 101. Zone C may range from about 0.15 to 1.8mm extending outward from the edge of zone B, or from the edge of zone B to a position 1.50 ± 0.75 from the center point 101. Zone D may then range from about 0.15 to 3.75mm outward from the edge of zone C (extending to the edge of optical zone 102), or from 3.00 ± 1.50mm outward from the edge of zone C (extending to the edge of optical zone 102).
In some embodiments, the diopter change curve includes a peak C 1 、C 2 、C 3 And trough T 1 、T 2 Wherein the peak C 1 Located in zone B and corresponding to a target diopter D 2 Wave crest C 2 Located in zone C and corresponding to a target diopter D 3 And wave peak C 3 Then is located in the D zone corresponding to a target diopter D 4 。
Referring next to fig. 6, a flowchart of a method for manufacturing a semiconductor device according to an embodiment of the invention is shown. Multifocal ophthalmic lenses of the invention may be prepared by methods known in the art, for example, a method comprising the steps of: preparing an ophthalmic lens forming mold having a plurality of diopter designs thereon (step S1), injecting a lens forming material into said lens forming mold (step S2), and polymerizing said lens forming material to form a multifocal ophthalmic lens (step S3).
Example 1: multifocal ophthalmic lens (1) (D) 2 ＞D 1 ≥D 3 ＞D 4 )
In this example, the actual case is D 2 ＞D 1 ＞D 3 ＞D 4 . Referring to FIG. 8, the optic zone of the multifocal ophthalmic lens (1) is designed to include A I Zone (central zone), B I Region, C I Zone and D I And (4) a zone. Wherein, A I The area ranges from the center point of the lens to the distance from the lensThe center point is 0.25mm I The range of the region is from A I The edge of the zone extends to a position 0.90mm from the center point of the lens, C I The range of the region is from B I The edge of the zone extends to a position 1.40mm from the center point of the lens, D I The range of the region is from C I The edge of the zone extends to a position 3.00mm from the center point of the lens (i.e., the edge of the second peripheral zone 106). Set D I Target diopter D of zone 4 Is-2.50, A I Target diopter D of zone 1 is-2.00,B I Target diopter D of zone 2 is-1.75,C I Target diopter D of zone 3 At-2.25, the curve of the change in power of the optic zone of the multifocal ophthalmic lens (1) is shown in FIG. 8.
Example 2: multifocal ophthalmic lens (2) (D) 2 ＞D 3 ＞D 1 ＞D 4 )
Referring to FIG. 9, the optic zone of the multifocal ophthalmic lens (2) is designed to include A II Zone (central zone), B II Zone, C II Zone and D II And (4) a zone. Wherein A is II The range of the zone is from the central point of the lens to 0.25mm from the central point of the lens II The region ranging from A II The edge of the zone extends to a position 0.90mm from the center point of the lens, C II The range of the region is from B II The edge of the zone extends to a position 1.40mm from the center point of the lens, D II The range of the region is from C II The edge of the zone extends to a position 3.00mm from the center point of the lens (i.e., the edge of the second peripheral zone 106). Set D II Target diopter D of zone 4 is-4.00A II Target diopter D of zone 1 Is-3.80 of II Target diopter D of zone 2 is-3.30,C II Target diopter D of zone 3 At-3.50, the curve of the power change in the optic zone of the multifocal ophthalmic lens (2) is shown in figure 9.
Example 3: multifocal ophthalmic lens (3) (D) 3 ＞D 2 ＞D 1 ＞D 4 )
Referring to FIG. 10, the optic zone of the multifocal ophthalmic lens (3) is designed to include A III Zone (center zone), B III Region, C III Zone and D III And (4) a zone. Wherein A is III The range of the zone is from the central point of the lens to 0.25mm from the central point of the lens III The range of the region is from A III The edge of the zone extends to a position 0.90mm from the center point of the lens, C III The range of the region is from B III The edge of the zone extends to a position 1.40mm from the center point of the lens, D III The range of the region is from C III The edge of the zone extends to a position 3.00mm from the center point of the lens (i.e., the edge of the second peripheral zone 106). Set D III Target diopter D of zone 4 is-4.00A III Target diopter D of zone 1 Is-3.80 of III Target diopter D of zone 2 is-3.50,C III Target diopter D of zone 3 At-3.30, the curve of the change in power of the optic zone of the multifocal ophthalmic lens (3) is shown in figure 10.
Example 4: wearing test
The visual lens comprises a conventional multifocal lens (control group) as shown in fig. 6, multifocal ophthalmic lenses (1) to (3) of the present invention as described above, in which the numerical values of the diopters of the lens tested are configured as follows:
diopter value configuration of comparison group lens: a. The 0 Zone(s)>B 0 Zone(s)>C 0 A zone;
diopter value arrangement of a multifocal ophthalmic lens (1): b I Zone(s)>A I Region ≥ C I Zone(s)>D I A zone;
diopter value arrangement of multifocal ophthalmic lens (2): b is II Zone(s)>C II Zone(s)>A II Zone(s)>D II A zone; and
diopter value arrangement of multifocal ophthalmic lens (3): c III Zone(s)>B III Zone(s)>A III Zone(s)>D III And (4) a zone.
The 20 wearers were measured and observed, and after wearing the different test lenses made in the control group and each group of examples, the wearer's near vision value (VAnear) and distance vision value (VAfar) at the time of looking at the near object were measured. Wherein the visual force values are marked from good vision to poor vision by 1.5, 1.2, 1.0, 09, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1, respectively. The wearing results are shown in table 1 below.
Table 1: lens wearing recording watch
Figure BDA0003239961030000081
Figure BDA0003239961030000091
According to the results of the wear test, the average visual power values of the control group and the multifocal ophthalmic lenses (1) to (3) of the present invention can be 1.0 or more in the near visual power value (VAnear) test of the near object, i.e., the objects can be clearly seen when the near object is seen, and the difference between the two is small.
However, in the distance vision (VAfar) test for viewing distant objects, it is obvious that the average visual power value of the control group is about 0.9, i.e. blurring occurs when viewing distant objects; the average visual power values of the multifocal ophthalmic lenses (1) to (3) of the present invention were 1.0 or more, indicating that the lenses of example 3 were still satisfactory for viewing distant objects.
From the above results, the multifocal ophthalmic lens of the present invention can effectively solve the problem of uncomfortable wearing caused by unclear vision when the lens of the prior art alternately looks far and near.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e., all equivalent variations and modifications in the shape, structure, characteristics and spirit of the present invention are included in the scope of the present invention.

Claims (10)

1. A multifocal ophthalmic lens, comprising:
an optical zone; and
a non-optical zone surrounding the optical zone;
wherein the diopter of different positions of the optical area continuously changes along with the distance between the position and the lens central point.
2. The multifocal ophthalmic lens of claim 1, wherein the optic zone comprises:
a central region having a diopter D 1 ；
A first peripheral zone surrounding the central zone and having a diopter D 2 (ii) a And
a second peripheral zone surrounding the first peripheral zone and having a diopter D 3 ；
Wherein D 2 ＞D 1 ＞D 3 。
3. A multifocal ophthalmic lens according to claims 1 or 2, characterized in that said continuous variation comprises two peaks C 1 And C 3 The wave crest C 1 Corresponding to the diopter D 2 The wave crest C 3 Corresponding to the diopter D 3 。
4. A multifocal ophthalmic lens, comprising:
an optical zone; and
a non-optical zone surrounding the optical zone;
wherein the optical zone comprises:
a central region having a diopter D 1 ；
A first peripheral zone surrounding the central zone and having a diopter D 2 (ii) a And
a second peripheral zone surrounding the first peripheral zone and having a diopter D 3 ；
Wherein D 2 ＞D 1 ＞D 3 。
5. The multifocal ophthalmic lens of claim 4, wherein the central zone ranges from 0.15 to 0.45mm extending outward from a central point of the multifocal ophthalmic lens.
6. The multifocal ophthalmic lens of claim 4, wherein the first peripheral zone extends 0.3 to 2.1mm outward from the edge of the central zone.
7. The multifocal ophthalmic lens of claim 4, wherein the second peripheral zone ranges from 0.15 to 3.75mm extending outward from the edge of the first peripheral zone.
8. A multifocal ophthalmic lens, comprising:
an optical zone; and
a non-optical zone surrounding the optical zone;
wherein the optical zone comprises:
zone A with one diopter D 1 ；
Zone B surrounding zone A and having a diopter D 2 ；
Zone C surrounding zone B and having a diopter D 3 (ii) a And
zone D surrounding zone C and having a diopter D 4 ；
Wherein D 1 、D 2 、D 3 And D 4 Has one of the following relationships: d 2 ＞D 1 ≥D 3 ＞D 4 、D 2 ＞D 3 ＞D 1 ＞D 4 Or D 3 ＞D 2 ＞D 1 ＞D 4 。
9. The multifocal ophthalmic lens of claims 4 or 8, wherein the power of the different positions of the optic zone varies continuously with the distance between the position and the lens center point.
10. The multifocal ophthalmic lens of claim 8, wherein zone A encompasses the geometric center of the multifocal ophthalmic lens.
CN202111014463.XA 2021-08-31 2021-08-31 Multifocal ophthalmic lenses Pending CN115728962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111014463.XA CN115728962A (en) 2021-08-31 2021-08-31 Multifocal ophthalmic lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111014463.XA CN115728962A (en) 2021-08-31 2021-08-31 Multifocal ophthalmic lenses

Publications (1)

Publication Number Publication Date
CN115728962A true CN115728962A (en) 2023-03-03

Family

ID=85291496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111014463.XA Pending CN115728962A (en) 2021-08-31 2021-08-31 Multifocal ophthalmic lenses

Country Status (1)

Country Link
CN (1) CN115728962A (en)

Similar Documents

Publication Publication Date Title
CN106291978B (en) Contact lenses comprising non-coaxial lenslets for preventing and/or slowing myopia progression
JP4183772B2 (en) Multifocal concentric annular lens and design method thereof
JP3804894B2 (en) Contact lenses for presbyopia correction
KR102047157B1 (en) Multifocal ophthalmic lens to be worn in or on the eye
CN109407342A (en) A kind of multizone contact lenses and application method with control mypia progression performance
CN105388632A (en) lens design and method for minimizing visual acuity variation experienced by myopia progressors
CN113189790B (en) Annular multi-point microlens defocusing lens with club structure and design method thereof
JP2000199876A (en) Multifocal ocular lens
CN115728962A (en) Multifocal ophthalmic lenses
CN215986774U (en) Double-sided composite multi-point out-of-focus spectacle lens
JP2000122007A (en) Multifocus type ocular lens
CN213423626U (en) Novel contact lens
WO2000060402A9 (en) Method of designing and fitting multifocal lenses taking into account material properties of the lenses
JP7445702B2 (en) contact lens
CN220208020U (en) Defocused lens, cornea contact lens and frame glasses
US11360325B2 (en) Employing diffractive structure to reduce soft contact lens variation
CN219046163U (en) Multilayer positive lens defocusing lens
CN219370156U (en) Gradual change type multipoint defocusing auxiliary lens and glasses with same
CN215867413U (en) Ophthalmic lens worn outside the eye
RU2815289C2 (en) Set of soft contact lenses
CN215986772U (en) Myopia control type corneal contact lens
CN213482596U (en) Out-of-focus type myopia prevention and control corneal contact lens
CN218413111U (en) Myopia lens and frame glasses
CN215219342U (en) Multi-focus soft contact lens
KR101936067B1 (en) Contact Lens For keratoconus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination