WO1997044698B1 - Enhanced monofocal intraocular lens - Google Patents
Enhanced monofocal intraocular lensInfo
- Publication number
- WO1997044698B1 WO1997044698B1 PCT/US1997/007970 US9707970W WO9744698B1 WO 1997044698 B1 WO1997044698 B1 WO 1997044698B1 US 9707970 W US9707970 W US 9707970W WO 9744698 B1 WO9744698 B1 WO 9744698B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zone
- power
- vision correction
- ophthalmic lens
- diopter
- Prior art date
Links
- 210000001525 Retina Anatomy 0.000 claims abstract 12
- 208000001491 Myopia Diseases 0.000 claims abstract 5
- 210000004087 Cornea Anatomy 0.000 claims abstract 2
- 230000003287 optical Effects 0.000 claims 3
- 241001646071 Prioneris Species 0.000 claims 1
Abstract
An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus is adapted to be implanted into an eye, placed over the eye, or to be disposed in a cornea of the eye. The ophthalmic lens includes a baseline diopter power for far vision correction, a first zone having a first vision correction power, and a second zone having a second vision correction power. The second zone is located radially outwardly of the first zone. The first zone includes a near vision correction power, and the second zone includes a far vision correction power. A maximum diopter value of the first zone is approximately .7 diopters above the baseline diopter, and a minimum diopter value of the second zone is approximately .5 diopters below the baseline diopter power. The first zone is adapted for focusing light at a first predetermined distance from the retina of the user, and the second zone is adapted for focusing light at a second predetermined distance from the retina of the user. The second predetermined distance is approximately opposite and equal to the first predetermined distance. A third zone, which is substantially similar to the first zone, is located radially outwardly of the second zone, and a fourth zone, which is substantially similar to the second zone, is located radially outwardly of the third zone. A third vision correction power of the third zone is approximately the same as the first vision correction power of the first zone, and a fourth vision correction power of the fourth zone is approximately the same as the second vision correction power of the second zone.
Claims
1. An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus, the ophthalmic lens being adapted to be implanted in an eye or to be disposed on or in a cornea and having a baseline diopter power for far vision correction, the ophthalmic lens comprising: a first zone having a first vision correction power; a second zone located radially outwardly of the first zone and having a second vision correction power; a third zone located radially outwardly of the second zone and having a third vision correction power which is substantially the same as the first vision correction power; and a fourth zone located radially outwardly of the third zone and having a fourth vision correction power which is substantially the same as the second vision correction power, the first, second, third and fourth zones being adapted to assist the ophthalmic lens in providing a monofocal vision correction power with an enhanced depth of focus.
2. The ophthalmic lens as recited in Claim 1, the first zone comprising a near vision correction power and the second zone comprising an annular far, far vision correction power.
3. The ophthalmic lens as recited in Claim 2, a maximum diopter value of the first zone being approximately .7 diopters above the baseline diopter power, and a minimum diopter value of the second zone being approximately .5 diopters below the baseline diopter power.
4. An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus, the ophthalmic lens having a baseline diopter power for far vision correction and comprising: a first zone adapted for focussing light at a first predetermined distance in front of a retina of a user; and a second zone located radially outwardly of the first zone for focussing light at a second predetermined distance behind the retina of the user, the second predetermined distance being approximately equal to the first predetermined distance, the first and second zones being adapted to assist the ophthalmic lens in providing a monofocal vision correction power with an enhanced depth of focus .
5. The ophthalmic lens as recited in Claim 4. further comprising: a third zone located radially outwardly of the second zone and adapted for focussing light at the first predetermined distance from the retina of the user; and a fourth zone located radially outwardly of the third zone and adapted for focussing light at the second predetermined distance from the retina of the user.
6. The ophthalmic lens as recited in Claim 5, further comprising: a fifth zone located radially outwardly of the fourth zone and adapted for focussing light at the first predetermined distance from the retina of the user; and a sixth zone located radially outwardly of the fifth zone and adapted for focussing light at the second predetermined distance from the retina of the user.
7. The ophthalmic lens as recited in Claim 6, the first zone being adapted for focussing light at the first predetermined distance in front of the retina of the user, and the second zone being adapted for focussing light at the second predetermined distance 27
behind the retina of the user.
8. An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus, the ophthalmic lens having a baseline diopter power for far vision correction and comprising: a first zone having a vision correction power that progressively changes from the baseline diopter power along a radially outwardly direction to a first diopter power, and then progressively changes back to the baseline diopter power; and a second zone circumscribing the first zone and having a vision correction power that progressively changes along a radially outwardly direction from the baseline diopter power to a second diopter value, and then progressively changes back to the baseline diopter power, the first zone and the second zone being adapted for focussing light at approximately equal distances in front of and behind a retina of a user, the first and second zones being adapted to assist the ophthalmic lens m providing a monofocal vision correction power with an enhanced depth of focus.
9. The ophthalmic lens as recited in Claim 8, further comprising: a third zone circumscribing the second zone, the third zone having a vision correction power that progressively changes along a radially outwardly direction from the baseline diopter power to a diopter power similar m magnitude to the first diopter power, and then progressively changes back to the baseline diopter power; and a fourth zone circumscribing the third zone, the fourth zone having a vision correction power that progressively changes along a radially outwardly 28
direction from the baseline diopter power to a diopter power similar m magnitude to the second diopter power, and then progressively changes back to the baseline diopter power.
10. The ophthalmic lens as recited in Claim 9, the first and third zones comprising near vision correction powers and the second and fourth zones comprising far, far vision correction powers.
11. The ophthalmic lens as recited in Claim 10, the third zone and the fourth zone comprising a pair of zones, and the ophthalmic lens further comprising additional pairs of zones, each additional pair of zones comprising: an inner zone having a vision correction power that progressively changes along a radially outwardly direction from the baseline diopter power to a diopter power similar in magnitude to the first diopter power, and then progressively changes back to the baseline diopter power; and an outer zone circumscribing the inner zone and having a vision correction power that progressively changes along a radially outwardly direction from the baseline diopter power to a diopter power similar m magnitude to the second diopter power, and then progressively changes back to the baseline diopter power.
12. The ophthalmic lens as recited in Claim 10, wherein a plot of diopter power versus distance-squared from lens center of the ophthalmic lens resembles a sawtooth line.
13. An ophthalmic lens for providing a monofocal 4698 PCΪ7US97/07970
29
vision correction power with an enhanced depth of focus, the ophthalmic lens having a baseline diopter power for far vision correction and comprising: an inner zone having a vision correction power that progressively changes along a radially outwardly direction to a first diopter value; and an intermediate zone circumscribing the inner zone and having a vision correction power that progressively changes along a radially outwardly direction to a second diopter value, a square of a distance between the first diopter value and an optical axis of the ophthalmic lens being approximately half of a square of a distance between the second diopter value and the optical axis of the ophthalmic lens, the inner zone and the intermediate zone being adapted to assist the ophthalmic lens in providing a monofocal vision correction power with an enhanced depth of focus.
14. The ophthalmic lens as recited in Claim 13, further comprising an outer zone circumscribing the intermediate zone and having a vision correction power that progressively changes along a radially outwardly direction back to the first diopter value, a square of a width of the outer zone being approximately equal to a square of a width of the intermediate zone.
15. The ophthalmic lens as recited in Claim 14, further comprising a second intermediate zone circumscribing the outer zone and having a vision correction power that progressively changes along a radially outwardly direction back to the second diopter value, a square of a width of the second intermediate zone being approximately equal to a square of a width of the outer zone. 30
16. The ophthalmic lens as recited in Claim 15, wherein the first diopter value is positive and the second diopter value is negative.
17. An ophthalmic lens for providing a monofocal vision correction power with an enhanced depth of focus, the ophthalmic lens having a baseline diopter power for far vision correction and comprising a set of alternating positive and negative vision correction powers, which set repeats along a radially outwardly direction from an optical axis of the ophthalmic lens, the repeating sets of alternating positive and negative vision correction powers being adapted to assist the ophthalmic lens in providing a monofocal vision correction power with an enhanced depth of focus.
18. The ophthalmic lens as recited in Claim 17, the set of alternating vision correction powers comprising: a first zone having a vision correction power that progressively changes from the baseline diopter power along a radially outwardly direction to a first diopter power, and then progressively changes back to the baseline diopter power; a second zone circumscribing the first zone and having a vision correction power that progressively changes along a radially outwardly direction from the baseline diopter power to a second diopter value, and then progressively changes back to the baseline diopter power, the first zone and the second zone being adapted for focussing light at approximately equal distances in front of and behind a retina of a user. 31
19. The ophthalmic lens as recited in Claim 18, the first zone comprising a near vision correction power and the second zone comprising a far, far vision correction power.
20. The ophthalmic lens as recited in Claim 19, a magnitude of the near vision correction power being approximately 1.4 times a magnitude of the far, far vision correction power.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97923632A EP0900404A1 (en) | 1996-05-21 | 1997-05-07 | Enhanced monofocal intraocular lens |
| JP09542470A JP2000511439A (en) | 1996-05-21 | 1997-05-07 | Improved single focus intraocular lens |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/651,017 US5864378A (en) | 1996-05-21 | 1996-05-21 | Enhanced monofocal IOL or contact lens |
| US08/651,017 | 1996-05-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997044698A1 WO1997044698A1 (en) | 1997-11-27 |
| WO1997044698B1 true WO1997044698B1 (en) | 1997-12-31 |
Family
ID=24611264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/007970 WO1997044698A1 (en) | 1996-05-21 | 1997-05-07 | Enhanced monofocal intraocular lens |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US5864378A (en) |
| EP (1) | EP0900404A1 (en) |
| JP (1) | JP2000511439A (en) |
| WO (1) | WO1997044698A1 (en) |
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-
1996
- 1996-05-21 US US08/651,017 patent/US5864378A/en not_active Expired - Lifetime
-
1997
- 1997-05-07 WO PCT/US1997/007970 patent/WO1997044698A1/en not_active Application Discontinuation
- 1997-05-07 JP JP09542470A patent/JP2000511439A/en active Pending
- 1997-05-07 EP EP97923632A patent/EP0900404A1/en not_active Withdrawn
-
1998
- 1998-01-27 US US09/014,310 patent/US6024447A/en not_active Expired - Lifetime
-
1999
- 1999-04-29 US US09/302,235 patent/US6126286A/en not_active Expired - Lifetime
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