Method and apparatus of forming a translating multifocal contact lens having a lower-lid contact surface
US9417464B2 · kind B2 · utility
11Cited by
58References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Apr 1, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2035/0833
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a translating multifocal contact lens including one or both of multiple Optic Zones and a lower-lid contact surface, and method steps and apparatus for implementing the same. In preferred embodiments, a translating multifocal lens may be Free-formed comprising a lower-lid contact surface capable of limiting the amount of translation of a lens across a surface of an eye when an eye changes from one Optic Zone to another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.