Method and apparatus for diagnosing and monitoring eye disease
US6293674A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Jul 11, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30041
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Embodiments of the present invention provide method and apparatus for diagnosing and monitoring eye disease such as, for example, glaucoma. In particular, embodiments of the present invention analyze OCT scans of a retina to determine one or more of the following measures for diagnosing and monitoring glaucomatous retinal nerve fiber layer ("NFL") change: an NFL thickness; a ratio of NFL thickness in a vertical quadrant (superior and inferior quadrants in an OCT scan are combined in a vertical average) and a horizontal quadrant (nasal and temporal quadrants in the OCT scan are combined in a horizontal average); and an NFL signal ratio ("NSR") of a sum of signal strengths in a predetermined portion of the NFL and a sum of signal strengths in a predetermined region below a retina-pigment epithelium ("RPE") interface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.