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Real-time eye motion compensation for OCT imaging with tracking SLO




TekijätVienola KV, Braaf B, Sheehy CK, Yang Q, Tiruveedhula P, Arathorn DW, de Boer JF, Roorda A

KustantajaOptical Society of America

Julkaisuvuosi2012

JournalBiomedical Optics Express

Tietokannassa oleva lehden nimiBIOMEDICAL OPTICS EXPRESS

Lehden akronyymiBiomed. Opt. Express

Vuosikerta3

Numero11

Aloitussivu2950

Lopetussivu2963

Sivujen määrä14

ISSN2156-7085

DOIhttps://doi.org/10.1364/BOE.3.002950

Verkko-osoitehttps://opg.optica.org/boe/fulltext.cfm?uri=boe-3-11-2950


Tiivistelmä
Fixational eye movements remain a major cause of artifacts in optical coherence tomography (OCT) images despite the increases in acquisition speeds. One approach to eliminate the eye motion is to stabilize the ophthalmic imaging system in real-time. This paper describes and quantifies the performance of a tracking OCT system, which combines a phase-stabilized optical frequency domain imaging (OFDI) system and an eye tracking scanning laser ophthalmoscope (TSLO). We show that active eye tracking minimizes artifacts caused by eye drift and micro saccades. The remaining tracking lock failures caused by blinks and large saccades generate a trigger signal which signals the OCT system to rescan corrupted B-scans. Residual motion artifacts in the OCT B-scans are reduced to 0.32 minutes of arc (similar to 1.6 mu m) in an in vivo human eye enabling acquisition of high quality images from the optic nerve head and lamina cribrosa pore structure. (C) 2012 Optical Society of America



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