Monitoring blood flow in the retina using a line-scanning laser ophthalmoscope
US7404640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2005 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Apr 11, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Real time, high-speed image stabilization with a retinal tracking scanning laser ophthalmoscope (TSLO) enables new approaches to established diagnostics. Large frequency range (DC to 19 kHz), wide-field (40-deg) stabilized Doppler flowmetry imaging is described for human subjects. The fundus imaging method is a quasi-confocal line-scanning laser ophthalmoscope (LSLO). The retinal tracking system uses a confocal reflectometer with a closed loop optical servo system to lock onto features in the ocular fundus and automatically re-lock after blinks. By performing a slow scan with the laser line imager, frequency-resolved retinal perfusion and vascular flow images can be obtained free of eye motion artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.