Application of blend zones, depth reduction, and transition zones to ablation shapes
US10449089B2 · kind B2 · utility
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15References
18Claims
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Key dates
| Filing date | Jul 2, 2012 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/0088
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods, devices, and systems for reprofiling a surface of a cornea of an eye ablate a portion of the cornea to create an ablation zone with an optically correct central optical zone disposed in a central portion of the cornea, and a blend zone disposed peripherally to the central optical zone and at least partially within an optical zone of the eye. The blend zone can have an optical power that gradually diminishes with increasing radius from the central optical zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.