Complex conjugate artifact-free adaptive optics optical coherence tomography of in vivo human optic nerve head.

ABSTRACT: We acquired in vivo images of the human optic nerve head (ONH) using an adaptive optics-optical coherence tomography (AO-OCT) system. In order to improve imaging of the lamina cribrosa in the ONH with high lateral resolution and sensitivity, we implemented a complex conjugate artifact-free Fourier domain OCT (Fd-OCT) acquisition scheme with a reference arm-based phase shifting method. This allowed positioning of the lamina cribrosa structures near the zero path length difference where AO-OCT imaging achieves highest sensitivity. Implementation of our complex conjugate artifact removal (CCR) method required constant phase shifts between consecutive axial scans (A-scans), generated by continuous beam path-length changes from offsetting the pivot point of the scanning mirror placed in the ref

SUBMITTER: Kim DY 

PROVIDER: S-EPMC3512164 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature