Multifocal ophthalmic lenses
US6179420A · kind A · utility
42Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a pair of multifocal lenses for the correction of presbyopia. The dominant eye lens has an optic zone with the distance optical power required and additional zones of either or both distance and near optical power. The non-dominant eye lens has an optic zone with the near optical power and additional zones of either or both near and distance optical power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.