Patent US5325110A successfully refreshed from Google Patents.
Patent US5089024A successfully refreshed from Google Patents.
US5089024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-focal intraocular lens
Assignee: Bausch and Lomb Inc
•
Filing: 1988-04-19
•
Granted: 1992-02-18
•
Expires: 2008-04-19
Abstract
Abstract An intraocular lens, for use within the human eye, contains three concentric regions. An innermost region provides far-field vision. A middle region, surrounding the innermost region, provides near-field vision. An outermost region, surrounding the middle region, provides far-field vision. The intermost region is of a size such that, when the pupil constricts in bright light, the innermost region remains exposed to incoming light, and can thus focus distant images in bright light.
Inventors
- 👤 Bruce A. Christie
- 👤 Gary L. Guenthner
- 👤 J. Warren Blaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:57
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/1616; A61F2/1618
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
186 words
An intraocular lens comprising: a) a first region, of long focal length, located near the center of the lens, and having a maximum diameter less than the average minimum diameter of a contracted pupil; b) a second region, of short focal length, which is substantially concentric about the first region, and having an inner diameter less than the average minimum diameter of a contracted pupil; c) a third region, of substantially the same focal length as the first region, and which is substantially concentric about the second region, and having an inner diameter not less than the average minimum diameter of a contracted pupil, d) the product of a first predetermined light intensity and the total area of said first region of long focal length located near the center of the lens being substantially equal to the product of a second predetermined light intensity and the total area of said second region of short focal length; e) said first predetermined light intensity being greater than said second predetermined light intensity and being about 100 lux; and f) said second predetermined light intensity being about 6 lux.
Claim 2
Dependent Claim
186 words
An intraocular lens comprising: a) a first region, of long focal length, located near the center of the lens, and having a maximum diameter less than the average minimum diameter of a contracted pupil; b) a second region, of short focal length, which is substantially concentric about the first region, and having an inner diameter less than the average minimum diameter of a contracted pupil; c) a third region, of substantially the same focal length as the first region, and which is substantially concentric about the second region, and having an inner diameter not less than the average minimum diameter of a contracted pupil, d) the product of a first predetermined light intensity and the total area of said first region of long focal length located near the center of the lens being substantially equal to the product of a second predetermined light intensity and the total area of said second region of short focal length; e) said first predetermined light intensity being greater than said second predetermined light intensity and being about 100 lux; and f) said second predetermined light intensity being about 6 lux.
Claim 3
Dependent Claim
54 words
A lens according to claim 1 in which the diameter of the first region is in the range of 0.75 to 1.50 millimeters, the outer diameter of the second region is in the range of 2.0 to 3.0 millimeters and the outer diameter of the third region is in the range of 5.00-10.00 millimeters.
References Cited (Backward Citations)
US1518405A
Cited
FR1103399A
Cited
US2878721A
Cited
US3034403A
Cited
GB939016A
Cited
US3339997A
Cited
US3458870A
Cited
US3270099A
Cited
US3555126A
Cited
US3614217A
Cited
US3726587A
Cited
US3711870A
Cited
US3794414A
Cited
US3950082A
Cited
US3913148A
Cited
US4010496A
Cited
US4118853A
Cited
US4172297A
Cited
US4174156A
Cited
US4206518A
Cited
US4525043A
Cited
US4315673A
Cited
US4253199A
Cited
US4338005A
Cited
US4365360A
Cited
US4254509A
Cited
US4316293A
Cited
US4418991A
Cited
US4377329A
Cited
US4514061A
Cited
US4642112A
Cited
US4402579A
Cited
US4477158A
Cited
US4710197A
Cited
US4418431A
Cited
US4573998A
Cited
US4435856A
Cited
US4412359A
Cited
US4512040A
Cited
US4504982A
Cited
US4640593A
Cited
US4466705A
Cited
US4637697A
Cited
US4580882A
Cited
US4593981A
Cited
US4813955A
Cited
DE3332313A1
Cited
US4655565A
Cited
US4636211A
Cited
US4605409A
Cited
US4720286A
Cited
US4619657A
Cited
US4575373A
Cited
US4564484A
Cited
WO1986003961A1
Cited
US4752123A
Cited
US4710193A
Cited
US4702573A
Cited
US4898461A
Cited
US4795462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |