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Detection of pigment epithelial detachment vascularization in age-related macular degeneration using phase-variance OCT angiography

Authors McClintic SM, Kim DY, Fingler J, Garcia S, Zawadzki RJ, Morse LS, Park SS, Fraser SE, Werner JS, Ruggiero JP, Schwartz DM

Received 28 February 2015

Accepted for publication 11 April 2015

Published 15 July 2015 Volume 2015:9 Pages 1299—1305

DOI https://doi.org/10.2147/OPTH.S83701

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 5

Editor who approved publication: Dr Scott Fraser

Scott M McClintic,1 Dae Yu Kim,2 Jeff Fingler,3 Susan Garcia,4 Robert J Zawadzki,4 Lawrence S Morse,4 Susanna S Park,4 Scott E Fraser,3 John S Werner,4 Jason P Ruggiero,5 Daniel M Schwartz6

1Department of Ophthalmology, Casey Eye Institute, Oregon Health and Science University, Portland, OR, USA; 2Beckman Laser Institute Korea and Department of Biomedical Engineering, Dankook University, Cheonan, South Korea; 3Translational Imaging Center, University of Southern California, Los Angeles, CA, 4Department of Ophthalmology and Vision Science, University of California Davis, Sacramento, CA, 5Retina Associates, PC, Winchester, VA, 6Department of Ophthalmology and Vision Science, University of California San Francisco, San Francisco, CA, USA

Purpose: To demonstrate the use of phase-variance optical coherence tomography (PV-OCT) angiography for detection of pigment epithelial detachment (PED) vascularization in age-related macular degeneration (AMD).
Patients and methods: Patients with PEDs and exudative AMD were evaluated by the Retina Services at the University of California, Davis, and the University of California, San Francisco. Each subject underwent fluorescein angiography and structural optical coherence tomography (OCT). Phase-variance OCT analysis was used to create angiographic images of the retinal and choroidal vasculature. PV-OCT-generated B-scans were superimposed on structural OCT B-scans to allow easy identification of perfused vascular structures.
Results: Three patients with vascularized PEDs were imaged with PV-OCT, and each was found to have a vascular signal extending from the choroid into the hyperreflective substance of the PED. Two patients who had no evidence of PED vascularization on fluorescein angiography did not have vascular signals within their PEDs on PV-OCT.
Conclusion: Structural OCT and PV-OCT images can be combined to create composite B-scans that offer high-resolution views of the retinal tissue along with dynamic vascular visualization. This technique offers a fast, noninvasive method for detecting vascularization of PEDs in AMD and may aid in the early detection of neovascular disease.

Keywords: OCT, imaging, retina

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