Fabrication of an intraocular lens
US5185107A · kind A · utility
52Cited by
18References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/901
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A lens, having an optical power surface, which may have multiple radii portions or aspherical portions as well as spherical portions, is molded in a coined mold. A pair of core pins, positioned within the mold cavity during the lens forming process, will produce a pair of haptic-mounting holes within the lens. As the lenses are subsequently tumbled to remove flash, indentations will form adjacent to the haptic-mounting holes. These indentations allow for tangential attachment of the haptic to the lens which, in turn, enables maximum flexibility without exceeding the width of the optic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.