Optical feedback system for vision correction
US6419671B1 · kind B1 · utility
179Cited by
17References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Dec 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2009/00872
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides laser eye surgery devices, systems, and methods which measure the refractive error in the eye before, during, and/or after vision correction surgery. The invention allows adjustments during the vision correction operation, and allows qualitative and/or quantitative measurements of the progress of photorefractive treatments by projecting and imaging reference images though the cornea and other components of the ocular optical system. A slope of an image quality value such as an Optical Transfer Function may be monitored during the procedure to help determine when to terminate treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.