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Journal of Ophthalmology
Volume 2012, Article ID 542417, 3 pages
http://dx.doi.org/10.1155/2012/542417
Clinical Study

En Face OCT Imaging for the Diagnosis of Outer Retinal Tubulations in Age-Related Macular Degeneration

Rothschild Ophthalmologic Foundation, 25 rue Manin, 75019 Paris, France

Received 3 March 2012; Revised 22 July 2012; Accepted 1 August 2012

Academic Editor: Robert J. Zawadzki

Copyright © 2012 Benjamin Wolff et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. “En face” is an emerging imaging technique derived from spectral domain optical coherence tomography (OCT). It produces frontal sections of retinal layers, also called “C-scan OCT.” Outer retinal tubulations (ORTs) in age-related macular degeneration (AMD) are a recent finding evidenced by spectral-domain OCT. The aim of this study is to characterize the morphology of ORT according to the form of AMD, using “en-face” spectral domain OCT. Methods. “En face” OCT imaging was prospectively performed in 26 consecutive eyes with AMD that also had ORT. Results. There were 15 neovascular, 8 atrophic, and 3 eyes with a mixed (fibrotic and atrophic) form of AMD. Among the neovascular group, the most frequent tubulation pattern on “en-face” OCT was a branching network emanating from a fibrovascular scar; we term this pattern as “pseudodendritic.” It did not require treatment when observed as an isolated finding. In all cases of atrophic AMD, the tubular network was located at the edge of the geographic atrophy area, and formed a “perilesional” pattern. Six atrophic cases showed tubular invaginations inside this area. Conclusion. “En face” OCT is a valuable technique in the diagnosis and followup of macular disease. It revealed the main characteristic patterns of ORT associated with neovascular and atrophic AMD.