Mask lens design and method for preventing and/or slowing myopia progression
US9594259B2 · kind B2 · utility
22Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Feb 7, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Contact lenses incorporate mask lens designs that at least one of slow, retard or preventing myopia progression. The lens includes a first zone at a center of the lens; at least one peripheral zone surrounding the center and having a dioptric power that is different than that at the center; and an opaque mask beginning at a radial distance from the center, thereby providing a lens power profile having substantially equivalent foveal vision correction to a single vision lens, and having a depth of focus and reduced retinal image quality sensitivity that slows, retards, or prevents myopia progression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.