Intraocular lens tumbling process using coated beads
AssigneeChiron Vision Corporation
InventorsMoises A. Valle, Akira Yamada, Robert James Kellar
Life of this patent
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Abstract
A method of processing a soft or foldable lens includes a step of tumbling (grinding) the lens in a tumbling medium. The tumbling medium includes a mixture of glass beads coated with an abrasive material, alcohol and water. This process applies to single piece and multipiece soft lenses.
Claims26
A method of processing a lens made of soft or foldable lens material, the method comprising the steps of:
- applying a coating of abrasive material to a plurality of beads, wherein the abrasive material comprises cerium oxide, zirconium oxide, chromium oxide, iron oxides, tin oxides, titanium dioxide, ytrium oxide, or diatomaceous earth;
- containing the coated beads in a tumbling container;
- adding at least one soft or foldable lens to the tumbling container;
- and
- tumbling the soft or foldable lens with the coated beads.
A method of processing a lens body made of soft or foldable lens material, the method comprising the steps of:
- containing a solution and beads coated with an abrasive material comprising cerium oxide, zirconium oxide, chromium oxide, iron oxides, tin oxides, titanium dioxide, ytrium oxide, or diatomaceous earth, or combinations thereof, in a tumbling container;
- adding at least one soft or foldable lens to the tumbling container;
- and
- tumbling the soft or foldable lens with the coated beads to remove irregularities and at least some lens material from the soft or foldable lens.
A method of processing a lens made of soft or foldable lens material, the method comprising the steps of:
- containing a solution and beads coated with an abrasive material in a tumbling container, wherein the abrasive material comprises Rhodite 90;
- adding at least one soft or foldable lens to the tumbling container;
- and
- tumbling the soft or foldable lens with the coated beads to remove irregularities and at least some lens material from the soft or foldable lens.
Dependencies are inferred from the claim text.