Single-camera sequential-scan-based polarization-sensitive SDOCT for retinal imaging.

Published

Journal Article

A single-camera, high-speed, polarization-sensitive, spectral-domain optical-coherence-tomography system was developed to measure the polarization properties of the in vivo human retina. A novel phase-unwrapping method in birefringent media is described to extract the total reflectivity, accumulative retardance, and fast-axis orientation from a specially designed sequence of polarization states incident on the sample. A quarter-wave plate was employed to test the performance of the system. The average error and standard deviation of retardation measurements were 3.2 degrees and 2.3 degrees , respectively, and of the fast-axis orientation 1.2 degrees and 0.7 degrees over the range of 0 degrees -180 degrees . The depolarization properties of the retinal pigment epithelium were clearly observed in both retardance and fast-axis orientation image. A normalized standard deviation of the retardance and of the fast-axis orientation is introduced to segment the polarization-scrambling layer of the retinal pigment epithelium.

Full Text

Duke Authors

Cited Authors

  • Zhao, M; Izatt, JA

Published Date

  • January 2009

Published In

Volume / Issue

  • 34 / 2

Start / End Page

  • 205 - 207

PubMed ID

  • 19148256

Pubmed Central ID

  • 19148256

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

International Standard Serial Number (ISSN)

  • 0146-9592

Digital Object Identifier (DOI)

  • 10.1364/ol.34.000205

Language

  • eng