Contact lens and method and systems for constructing a contact lens
US10261342B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/049
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Contact lenses, methods and systems for accomplishing the requirement for biocompatibility of oxygen delivery to the eye, and the cornea in particular, when elements and components are used which reduce the transmissibility of oxygen and which require coverage of a significant area of the non-vascularized cornea. A contact lens assembly is provided, comprising: an anterior surface, a posterior surface and at least one element or component having a substantially low oxygen permeability disposed within the lens. The contact lens also includes a layer having an oxygen permeability greater than the aforementioned element or component. The thickness of this layer is such that the layer provides an equivalent oxygen percentage to the cornea beneath the aforementioned element or component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.