17 July 2015 En face projection imaging of the human choroidal layers with tracking SLO and swept source OCT angiography methods
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Abstract
We tested and compared the capability of multiple optical coherence tomography (OCT) angiography methods: phase variance, amplitude decorrelation and speckle variance, with application of the split spectrum technique, to image the choroiretinal complex of the human eye. To test the possibility of OCT imaging stability improvement we utilized a real-time tracking scanning laser ophthalmoscopy (TSLO) system combined with a swept source OCT setup. In addition, we implemented a post- processing volume averaging method for improved angiographic image quality and reduction of motion artifacts. The OCT system operated at the central wavelength of 1040nm to enable sufficient depth penetration into the choroid. Imaging was performed in the eyes of healthy volunteers and patients diagnosed with age-related macular degeneration.
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Iwona Gorczynska, Justin Migacz, Robert J. Zawadzki, Narendran Sudheendran, Yifan Jian, Pavan Kumar Tiruveedhula, Austin Roorda, John S. Werner, "En face projection imaging of the human choroidal layers with tracking SLO and swept source OCT angiography methods", Proc. SPIE 9541, Optical Coherence Imaging Techniques and Imaging in Scattering Media, 954112 (17 July 2015); doi: 10.1117/12.2183603; http://dx.doi.org/10.1117/12.2183603
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KEYWORDS
Optical coherence tomography

Eye

Angiography

Scanning laser ophthalmoscopy

Visualization

Retina

Imaging systems

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