Foldable intraocular lens and method of making

• US 8,382,832 B2
• Filed: 09/25/2009
• Issued: 02/26/2013
• Est. Priority Date: 12/09/2003
• Status: Active Grant

• Current Assignee: Johnson & Johnson Surgical Vision, Inc. (Johnson & Johnson)
• Original Assignee: Abbott Medical Optics Incorporated (Johnson & Johnson)
• Inventors: Deacon, Jim, Shepherd, David J., Brady, Daniel G., Paul, Marlene L.
• Primary Examiner(s): Matthews, William H.
• Application Number:
  US12/567,425
• Publication Number:
  US 20100036490A1
• Time in Patent Office: 1,250 Days
• Field of Search: 623/6.16, 623/6.17, 623/6.19, 623/6.43, 623/6.46, 623/6.49
• US Class Current: 623/6.49
• CPC Class Codes: A61F 2/16015 Lens having spacers for providing a gap between the posterior capsule and a posterior surface of the intraocular lens
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2002/009 for hindering or preventing attachment of biological tissue of bone tissue onto implantable joints A61F2002/30932
• CPC Class Codes: A61F 2002/1681 having supporting structure for lens, e.g. haptics
• CPC Class Codes: A61F 2002/1689 having plate-haptics
• CPC Class Codes: A61F 2002/16901 Supporting structure conforms to shape of capsular bag
• CPC Class Codes: A61F 2002/1696 Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction
• CPC Class Codes: Y10T 29/49 Method of mechanical manufacture

Abstract

A foldable intraocular lens for providing vision contains an optic body that includes an optical zone and a peripheral zone entirely surrounding the optical zone. The optic body has an anterior face, a substantially opposing posterior face, an optic edge, and an optical axis. The anterior face comprises a central face, a peripheral face, and a recessed annular face therebetween that is disposed posterior to the peripheral face. The intraocular lens further comprises at least one haptic that is integrally formed with the peripheral zone. The haptic comprises a distal posterior face, a proximal posterior face, and a step edge disposed at a boundary therebetween. The haptic further comprises a side edge disposed between the optic edge and the step edge. The proximal posterior face and the posterior face of the optic body form a continuous surface. An edge corner is formed by the intersection of the continuous surface with the optic edge, the side edge, and the step edge.

Claims

1. A foldable intraocular lens, comprising:

an optic body including an optical zone and a peripheral zone entirely surrounding the optical zone, the optic body having an anterior face, a substantially opposing posterior face, an optic edge, and an optical axis;

at least one haptic integrally formed with the peripheral zone, comprising;

a distal posterior face and a proximal posterior face; and

a boundary between the proximal posterior face and the distal posterior face, the distal posterior face being offset at the boundary from the proximal posterior face in a direction along the optical axis to form a step edge;

a side edge disposed between the optic edge and the step edge; and

a continuous surface formed by the proximal posterior face and the posterior face of the optic body; and

wherein the distal posterior face is perpendicular to the optical axis.

2. The foldable intraocular lens of claim 1, further comprising an edge corner formed by an intersection of the continuous surface with the optic edge, the side edge, and the step edge.

3. The foldable intraocular lens of claim 1, wherein the step edge has a height that is in the range of 0.05 mm to 1 mm.

4. The foldable intraocular lens of claim 1, wherein the haptic is characterized by a haptic thickness equal to a distance along the optical axis between the distal posterior face and a substantially opposing haptic anterior face.

5. The foldable intraocular lens of claim 4, wherein the haptic thickness is greater than or approximately equal to an optic edge thickness of the optic edge along the optical axis.

6. The foldable intraocular lens of claim 4, wherein at least one of the haptic thickness or the optic edge thickness along the optical axis is in the range of at about 0.2 mm or less to about 1 mm or more.

7. The foldable intraocular lens of claim 1, wherein the step edge has a height H and the optic edge has a thickness T.

8. The foldable intraocular lens of claim 7, wherein the height H is less than the thickness T.

9. The foldable intraocular lens of claim 7, wherein the thickness T is in the range of about 0.4 mm to about 0.5 mm.

10. The foldable intraocular lens of claim 1, wherein at least a portion of the boundary forms a substantially straight line.

11. The foldable intraocular lens of claim 1, wherein the step tapers radially.

12. A method of making a foldable intraocular lens, comprising:

providing an optic body including an optical zone and a peripheral zone entirely surrounding the optical zone, the optic body having an anterior face, a substantially opposing posterior face, an optic edge, and an optical axis;

at the peripheral zone, integrally forming at least one haptic comprising a distal posterior face, a proximal posterior face, and a boundary therebetween, the distal posterior face being offset at the boundary from the proximal posterior face in a direction along the optical axis to form a step edge;

forming a side edge disposed between the optic edge and the step edge; and

forming the proximal posterior face and the posterior face of the optic body into a continuous surface;

wherein the distal posterior face is perpendicular to the optical axis.