Choroidal Haller’s and Sattler’s Layer Thickness Measurement Using 3-Dimensional 1060-nm Optical Coherence Tomography

Language
en
Document Type
Article
Issue Date
2014-07-01
Issue Year
2014
Authors
Esmaeelpour, Marieh
Kajic, Vedran
Zabihian, Behrooz
Othara, Richu
Ansari-Shahrezaei, Siamak
Kellner, Lukas
Krebs, Ilse
Nemetz, Susanne
Kraus, Martin F.
Hornegger, Joachim
Editor
Abstract

Objectives: To examine the feasibility of automatically segmented choroidal vessels in three-dimensional (3D) 1060-nmOCT by testing repeatability in healthy and AMD eyes and by mapping Haller’s and Sattler’s layer thickness in healthy eyes Methods: Fifty-five eyes (from 45 healthy subjects and 10 with non-neovascular age-related macular degeneration (AMD) subjects) were imaged by 3D-1060-nmOCT over a 36ux36u field of view. Haller’s and Sattler’s layer were automatically segmented, mapped and averaged across the Early Treatment Diabetic Retinopathy Study grid. For ten AMD eyes and ten healthy eyes, imaging was repeated within the same session and on another day. Outcomes were the repeatability agreement of Haller’s and Sattler’s layer thicknesses in healthy and AMD eyes, the validation with ICGA and the statistical analysis of the effect of age and axial eye length (AL) on both healthy choroidalsublayers. Results: The coefficients of repeatability for Sattler’s and Haller’s layers were 35% and 21% in healthy eyes and 44% and 31% in AMD eyes, respectively. The mean6SD healthy central submacular field thickness for Sattler’s and Haller’s was 87656 mm and 141650 mm, respectively, with a significant relationship for AL (P,.001). Conclusions: Automated Sattler’s and Haller’s thickness segmentation generates rapid 3D measurements with a repeatability correspondingto reported manual segmentation. Sublayers in healthy eyes thinnedsignificantly with increasing AL. In the presence of the thinned Sattler’s layer in AMD, careful measurement interpretation is needed. Automatic choroidal vascular layer mapping may help to explain if pathological choroidal thinning affects medium and large choroidal vasculature in addition to choriocapillaris loss.

Journal Title
PLoS ONE
Volume
9
Issue
6
Citation
PLoS ONE 9.6 (2014): 18.06.2014 <http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0099690>
DOI
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