Patent US4504982A successfully refreshed from Google Patents.
US4504982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspheric intraocular lens
Assignee: Ciba Vision AG
•
Filing: 1982-08-05
•
Granted: 1985-03-19
•
Expires: 2002-08-05
Abstract
Abstract An intraocular lens for permanent implantation into a human eye is provided. The lens has at least one aspheric surface.
Inventors
- 👤 Paul O. Burk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface with a radius of curvature that is longer at the edge than at the apex, wherein the radius of curvature in the area up to 1.5 mm from the apex is constant.
Claim 2
Dependent Claim
50 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface with a radius of curvature that is longer at the edge than at the apex, wherein the radius of curvature in the area up to 1.5 mm from the apex is constant.
Claim 3
Dependent Claim
94 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface with a radius of curvature that varies from the apex to the edge according to the equation for the sag value Z of ##EQU2## where Ca is the apical curvature; k is a conic constant; A, B, C, and D are coefficients and Y is the distance normal to the optical axis of the lens through the apex and the parameters are selected to provide substantially the same focal length for all diameters of the lens.
Claim 4
Dependent Claim
94 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface with a radius of curvature that varies from the apex to the edge according to the equation for the sag value Z of ##EQU2## where Ca is the apical curvature; k is a conic constant; A, B, C, and D are coefficients and Y is the distance normal to the optical axis of the lens through the apex and the parameters are selected to provide substantially the same focal length for all diameters of the lens.
Claim 5
Dependent Claim
20 words
An intraocular lens in accordance with claim 2 wherein the apical radius of curvature is between 6.2 and 15.51 mm.
Claim 6
Dependent Claim
24 words
An intraocular lens in accordance with claim 2 wherein the refractive power at the apex is between 10 and 25 diopters in the eye.
Claim 7
Dependent Claim
14 words
An intraocular lens in accordance with claim 2 wherein the lens is plano convex.
Claim 8
Dependent Claim
336 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface wherein the curvature of the surface varies from the apex to the edge according to the equation for the SAG value Z of ##EQU3## where: Ca is the apical curvature, k is a conic constant; A, B, C, and D are coefficients and Y is the distance normal to the optical axis of the lens through the apex and wherein the apical curvature, a conic constant and coefficients for each diopter of lens are selected from the following: __________________________________________________________________________
Diopter
Ca ×
K ×
A ×
B ×
C ×
D ×
(Eye)
10.sup.-2
10.sup.-3
10.sup.-3
10.sup.-5
10.sup.-9
10.sup.-10
__________________________________________________________________________
10 6.447
.265 -.192807
-.10861
-.203377
.507039
10.5 6.77
.299 -.194550
-.115792
-.869791
.522880
11 7.092
.314 -.196336
-.123124
-1.58687
.520648
11.5 7.415
.318 -.198817
-.131235
-2.36760
.509791
12 7.737
.320 -.201688
-.139867
-3.21878
.489171
12.5 8.059
.307 -.205027
-.149196
-4.16882
.462950
13 8.382
.298 -.208396
-.158830
-5.22122
.424082
13.5 8.705
.299 -.212971
-.170045
-6.41432
.381238
14 9.027
.307 -.217322
-.181376
-7.72415
.316264
14.5 9.349
.304 -.222617
-.194216
-9.19654
.226656
15 9.671
.288 -.228381
-.208100
-10.8498
.113574
15.5 1.000
.131 -.234722
-.223455
-12.7517
-.0361902
16 1.031
.116 -.241366
-.239526
-14.8455
-.0194536
16.5 10.627
.118 -.249590
-.258260
-17.2455
-.380321
17 10.965
.120 -.257318
-.277884
-20.0191
-.676902
17.5 11.287
.138 -.265935
-.299238
-23.1081
-.997463
18 11.628
.119 -.276075
-.324511
-26.8191
-1.45071
18.5 11.933
.115 -.286278
-.349943
-30.6623
-1.92666
19 12.255
.093 -.297730
-.379195
-35.2485
-2.54846
19.5 12.579
-209.862
-.257701
-.337117
-30.9202
-1.58611
20 12.903
-209.861
-.266800
-.362553
-34.8611
-2.19214
20.5 13.288
-216.035
-.274240
-.386696
-39.2435
-2.62190
21 13.55
-23.2098
-.280288
-.410766
-43.3719
-3.28125
21.5 13.87
-23.2093
-.290679
-.441681
-48.8705
-4.06198
22 14.184
-23.2094
-.302648
-.476935
-55.1714
-4.98135
22.5 14.514
-23.2095
-.315256
-.515630
-62.4471
-6.11013
23 14.837
-23.2145
-.332809
-.566820
-71.6961
-7.46951
23.5 15.155
-24.2738
-.338602
-.595568
-78.2638
-8.73609
24 15.48
-24.2737
-.355016
-.648247
-88.88159
-10.5606
24.5 15.798
-24.2745
-.371194
-.702356
-100.112
-12.6698
25 16.129
-25.7839
-.381465
-.749158
-110.796
-14.5862
__________________________________________________________________________
Claim 9
Dependent Claim
336 words
An intraocular lens for implantation in the human eye comprising a lens having at least one curved surface wherein the curvature of the surface varies from the apex to the edge according to the equation for the SAG value Z of ##EQU3## where: Ca is the apical curvature, k is a conic constant; A, B, C, and D are coefficients and Y is the distance normal to the optical axis of the lens through the apex and wherein the apical curvature, a conic constant and coefficients for each diopter of lens are selected from the following: __________________________________________________________________________
Diopter
Ca ×
K ×
A ×
B ×
C ×
D ×
(Eye)
10.sup.-2
10.sup.-3
10.sup.-3
10.sup.-5
10.sup.-9
10.sup.-10
__________________________________________________________________________
10 6.447
.265 -.192807
-.10861
-.203377
.507039
10.5 6.77
.299 -.194550
-.115792
-.869791
.522880
11 7.092
.314 -.196336
-.123124
-1.58687
.520648
11.5 7.415
.318 -.198817
-.131235
-2.36760
.509791
12 7.737
.320 -.201688
-.139867
-3.21878
.489171
12.5 8.059
.307 -.205027
-.149196
-4.16882
.462950
13 8.382
.298 -.208396
-.158830
-5.22122
.424082
13.5 8.705
.299 -.212971
-.170045
-6.41432
.381238
14 9.027
.307 -.217322
-.181376
-7.72415
.316264
14.5 9.349
.304 -.222617
-.194216
-9.19654
.226656
15 9.671
.288 -.228381
-.208100
-10.8498
.113574
15.5 1.000
.131 -.234722
-.223455
-12.7517
-.0361902
16 1.031
.116 -.241366
-.239526
-14.8455
-.0194536
16.5 10.627
.118 -.249590
-.258260
-17.2455
-.380321
17 10.965
.120 -.257318
-.277884
-20.0191
-.676902
17.5 11.287
.138 -.265935
-.299238
-23.1081
-.997463
18 11.628
.119 -.276075
-.324511
-26.8191
-1.45071
18.5 11.933
.115 -.286278
-.349943
-30.6623
-1.92666
19 12.255
.093 -.297730
-.379195
-35.2485
-2.54846
19.5 12.579
-209.862
-.257701
-.337117
-30.9202
-1.58611
20 12.903
-209.861
-.266800
-.362553
-34.8611
-2.19214
20.5 13.288
-216.035
-.274240
-.386696
-39.2435
-2.62190
21 13.55
-23.2098
-.280288
-.410766
-43.3719
-3.28125
21.5 13.87
-23.2093
-.290679
-.441681
-48.8705
-4.06198
22 14.184
-23.2094
-.302648
-.476935
-55.1714
-4.98135
22.5 14.514
-23.2095
-.315256
-.515630
-62.4471
-6.11013
23 14.837
-23.2145
-.332809
-.566820
-71.6961
-7.46951
23.5 15.155
-24.2738
-.338602
-.595568
-78.2638
-8.73609
24 15.48
-24.2737
-.355016
-.648247
-88.88159
-10.5606
24.5 15.798
-24.2745
-.371194
-.702356
-100.112
-12.6698
25 16.129
-25.7839
-.381465
-.749158
-110.796
-14.5862
__________________________________________________________________________
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-18 | 1988-09-17 | 1989-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-18 | 1992-09-17 | 1993-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-18 | 1996-09-17 | 1997-03-19 | $7700.00 | Window Closed / Lapsed |