Corneal graft evaluation based on optical coherence tomography image
US8958621B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2011 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Feb 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30041
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An OCT image of an eye which has been subject to a DSAEK corneal transplant, in which a Descement's membrane in the cornea has been replaced by a graft, is processed to identify the outline of the graft. The process includes the steps of: computationally extracting the boundary of the cornea including the graft; computationally detecting the corners of the graft; computationally extracting points on the boundary between the graft and the original cornea; and computationally fitting the points on the boundary between the graft and the original cornea smoothly into a curve. The outline of the graft is then displayed. A graft profile may be generated, indicating the thickness of the graft at each point along its length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.