Patent US4581031A successfully refreshed from Google Patents.
US4581031A
Expired / Lapsed
US
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Prismatic intraocular lens
Assignee: PRIZM OPTHALMICS VIRGINIA LLC
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Filing: 1984-06-22
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Granted: 1986-04-08
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Expires: 2004-06-22
Abstract
Abstract An intraocular lens including a convex portion and a prismatic portion for use with patients having macular degeneration of the retina. The lens is to be implanted in the eye, after removal of the natural lens, to direct rays of light away from the diseased center of the retina and focus them on an undiseased area of the retina, thereby improving sight.
Inventors
- 👤 Jeffrey E. Koziol
- 👤 Gholam A. Peyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:07
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/1648; A61F2/1654; A61F2/1656
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
67 words
An intraocular lens adapted to be implanted in the eye comprising: a lens portion having a first portion and a second portion, said first portion including means for focusing light entering the eye, said second portion including prism means for deflecting light entering the eye away from the center of the retina; and means, coupled to said lens portion, for supporting said lens portion in the eye.
Claim 2
Dependent Claim
67 words
An intraocular lens adapted to be implanted in the eye comprising: a lens portion having a first portion and a second portion, said first portion including means for focusing light entering the eye, said second portion including prism means for deflecting light entering the eye away from the center of the retina; and means, coupled to said lens portion, for supporting said lens portion in the eye.
Claim 3
Dependent Claim
18 words
An intraocular lens according to claim 1, wherein said prism means is integrally formed with said second portion.
Claim 4
Dependent Claim
18 words
An intraocular lens according to claim 2, wherein said second portion and said first portion are integrally formed.
Claim 5
Dependent Claim
18 words
An intraocular lens according to claim 1, wherein said second portion and said first portion are integrally formed.
Claim 6
Dependent Claim
16 words
An intraocular lens according to claim 1, wherein said means for focusing comprises a convex surface.
Claim 7
Dependent Claim
34 words
An intraocular lens according to claim 1, wherein said lens portion has a central, longitudinal axis, and said prism means comprises a first planar face extending at an acute angle to said longitudinal axis.
Claim 8
Dependent Claim
23 words
An intraocular lens according to claim 6, wherein said prism means further comprises a second planar face extending parallel to said longitudinal axis.
Claim 9
Dependent Claim
17 words
An intraocular lens according to claim 1, wherein said lens portion has a substantially circular outer periphery.
Claim 10
Dependent Claim
15 words
An intraocular lens according to claim 1, wherein said lens portion is formed of glass.
Claim 11
Dependent Claim
16 words
An intraocular lens according to claim 1, wherein said lens portion is formed of polymeric material.
Claim 12
Dependent Claim
66 words
An intraocular lens adapted to be implanted in the eye comprising: a lens portion having a first portion and a second portion, said first portion including means for focusing light entering the eye, said second portion including means for deflecting light entering the eye away from the center of the retina; and means, coupled to said lens portion, for supporting said lens portion in the eye.
Claim 13
Dependent Claim
66 words
An intraocular lens adapted to be implanted in the eye comprising: a lens portion having a first portion and a second portion, said first portion including means for focusing light entering the eye, said second portion including means for deflecting light entering the eye away from the center of the retina; and means, coupled to said lens portion, for supporting said lens portion in the eye.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |