Toric intraocular lens material

• US 6,491,721 B2
• Filed: 01/16/2001
• Issued: 12/10/2002
• Est. Priority Date: 04/15/1998
• Status: Expired due to Term

• Current Assignee: Novartis Ag
• Original Assignee: Alcon Manufacturing Limited (Alcon Incorporated)
• Inventors: Simpson, Michael J., Karakelle, Mutlu, Freeman, Charles
• Primary Examiner(s): Nguyen, Dinh X.
• Application Number:
  US09/761,070
• Publication Number:
  US 20010014824A1
• Time in Patent Office: 693 Days
• Field of Search: 623/6.11, 623/6.56, 351/159
• US Class Current: 623/6.56
• CPC Class Codes: A61F 2/16 Intraocular lenses
• CPC Class Codes: A61F 2/1645 Toric lenses

Abstract

A method of selecting an intraocular lens material for toric lenses is disclosed. The method comprises determining the tack of the material.

Claims

1. A toric intraocular lens comprising an optic having an anterior surface, posterior surface, or both, consisting of a material that has a Tack Quotient of about 1 or greater, provided that said material does not consist essentially of (i) 2-phenylethyl acrylate and 2-phenylethylmethacrylate or (ii) ethyl acrylate, ethyl methacrylate and trifluoroethylmethacrylate, wherein the lens has a shape and configuration of a toric lens.

2. The toric intraocular lens of claim 1 wherein the optic comprises a material that is substantially free of glistenings, has a refractive index of about 1.50 or greater, has a T_g of about −

20 to +25°

C., and has an elongation of at least about 150%.

3. The toric intraocular lens of claim 1 wherein the Tack Quotient is about 1-3.

4. The toric intraocular lens of claim 3 wherein the Tack Quotient is about 1-2.

5. The toric intraocular lens of claim 4 wherein the Tack Quotient is about 1-1.5.

6. A toric intraocular lens comprising an optic consisting of a material that has a Tack Quotient of about 1 or greater, provided that said material does not consist essentially of (i) 2-phenylethyl acrylate and 2-phenylethylmethacrylate or (ii) ethyl acrylate, ethyl methacrylate and trifluoroethylmethacrylate, wherein the lens has a shape and configuration of a toric lens.

7. A toric intraocular lens comprising a haptic consisting of a material that has a Tack Quotient of about 1 or greater, provided that said material does not consist essentially of (i) 2-phenylethyl acrylate and 2-phenylethylmethacrylate or (ii) ethyl acrylate, ethyl methacrylate and trifluoroethylmethacrylate, wherein the lens has a shape and configuration of a toric lens.

8. A toric intraocular lens comprising a haptic coated with a material that has a Tack Quotient of about 1 or greater, provided that said material does not consist essentially of (i) 2-phenylethyl acrylate and 2-phenylethylmethacrylate or (ii) ethyl acrylate, ethyl methacrylate and trifluoroethylmethacrylate, wherein the lens has a shape and configuration of a toric lens.