Open Access
5 March 2018 Volumetric imaging of rod and cone photoreceptor structure with a combined adaptive optics-optical coherence tomography-scanning laser ophthalmoscope
Elaine M. M. Wells-Gray, Stacey S. Choi, Robert J. Zawadzki, Susanna C. Finn, Cherry A. Greiner, John S. Werner, Nathan P. Doble
Author Affiliations +
Abstract
We have designed and implemented a dual-mode adaptive optics (AO) imaging system that combines spectral domain optical coherence tomography (OCT) and scanning laser ophthalmoscopy (SLO) for in vivo imaging of the human retina. The system simultaneously acquires SLO frames and OCT B-scans at 60 Hz with an OCT volume acquisition time of 4.2 s. Transverse eye motion measured from the SLO is used to register the OCT B-scans to generate three-dimensional (3-D) volumes. Key optical design considerations include: minimizing system aberrations through the use of off-axis relay telescopes, conjugate pupil plane requirements, and the use of dichroic beam splitters to separate and recombine the OCT and SLO beams around the nonshared horizontal scanning mirrors. To demonstrate system performance, AO-OCT-SLO images and measurements are taken from three normal human subjects ranging in retinal eccentricity from the fovea out to 15-deg temporal and 20-deg superior. Also presented are en face OCT projections generated from the registered 3-D volumes. The ability to acquire high-resolution 3-D images of the human retina in the midperiphery and beyond has clinical importance in diseases, such as retinitis pigmentosa and cone–rod dystrophy.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE) 1083-3668/2018/$25.00 © 2018 SPIE
Elaine M. M. Wells-Gray, Stacey S. Choi, Robert J. Zawadzki, Susanna C. Finn, Cherry A. Greiner, John S. Werner, and Nathan P. Doble "Volumetric imaging of rod and cone photoreceptor structure with a combined adaptive optics-optical coherence tomography-scanning laser ophthalmoscope," Journal of Biomedical Optics 23(3), 036003 (5 March 2018). https://doi.org/10.1117/1.JBO.23.3.036003
Received: 30 October 2017; Accepted: 29 January 2018; Published: 5 March 2018
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CITATIONS
Cited by 22 scholarly publications.
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KEYWORDS
Optical coherence tomography

Scanning laser ophthalmoscopy

Cones

Eye

Adaptive optics optical coherence tomography

Rods

Adaptive optics

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