Claims
- 1. A phakic intraocular corrective lens having an anterior and a posterior side, comprising an optical body; a plurality of haptic bodies attached to and extending outwardly from said optical body to a maximum diagonal haptic dimension of from about 10.5 to about 11.5 mm, and having a thickness of no greater than about 0.15 mm; an annular protruding surface of such size, shape and position that, when positioned in the eye, it will contact the iris at one or more points as the iris constricts to place a centering force on the lens, said protruding surface having a height above the posterior side of the lens of from about 0.25 to about 1 mm; said lens configured such that when placed in the eye, the optical body is located substantially in the posterior chamber of the eye behind the iris and is floating in the aqueous humor between the iris and the natural lens, and wherein said intraocular lens does not include a means for permanent fixation in the eye.
- 2. The phakic intraocular corrective lens according to claim 1 wherein the optical body is free of openings between its anterior and posterior sides.
- 3. The phakic intraocular corrective lens according to claim 1 wherein the radius of curvature of the posterior surface of the optical body is substantially equal to the radius of curvature of the haptic bodies.
- 4. The phakic intraocular corrective lens according to claim 1 wherein the optical body has a negative curvature.
- 5. The phakic intraocular corrective lens according to claim 1 wherein the protruding surface is of such size and shape that it allows the iris to slide over it without restricting the movement of the iris.
- 6. The phakic intraocular corrective lens according to claim 5 wherein the protruding surface is sloped, curved or ramped at the portion of the surface which contacts the iris.
- 7. The phakic intraocular corrective lens according to claim 6 which is made from an optically clear hydrophilic gas-permeable material.
- 8. The phakic intraocular corrective lens according to claim 6 made from an optically clear material selected from the group consisting of silicones, silicon-methacrylate copolymers, polymethyl methacrylate, polyhydroxyethyl methacrylate, collagen/acrylate blends, and mixtures and copolymers thereof.
- 9. The phakic intraocular corrective lens according to claim 6 wherein the haptic bodies are nonplanar, of substantially uniform thickness throughout their length, and are flexible in the direction of the optical axis of the lens.
Parent Case Info
This is a continuation patent application based on U.S. patent application Ser. No. 08/955,917, Valunin, et al., filed Oct. 22, 1997, now U.S. Pat. No. 6,015,435, issued Jan. 18, 2000, which claims benefit from U.S. Provisional Patent Application No. 60/029,103, filed Oct. 24, 1996, and U.S. Provisional Patent Application No. 60/029,341, filed Oct. 31, 1996.
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Foreign Referenced Citations (3)
Number |
Date |
Country |
2093097 |
Oct 1993 |
CA |
537643 |
Apr 1993 |
EP |
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WO |
Non-Patent Literature Citations (1)
Entry |
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Provisional Applications (2)
|
Number |
Date |
Country |
|
60/029103 |
Oct 1996 |
US |
|
60/029341 |
Oct 1996 |
US |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/955917 |
Oct 1997 |
US |
Child |
09/484544 |
|
US |