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Ophthalmic Surg Lasers Imaging. 2009 Mar-Apr;40(2):96-101.

Spectral domain optical coherence tomographic imaging of geographic atrophy.

Author information

1
Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida 33136, USA.

Abstract

BACKGROUND AND OBJECTIVE:

To compare images of geographic atrophy (GA) obtained using spectral domain optical coherence tomography (SD-OCT) with images obtained using fundus autofluorescence (FAF).

PATIENTS AND METHODS:

Five eyes from patients with dry AMD were imaged using SD-OCT and FAF, and the size and shape of the GA were compared.

RESULTS:

GA appears bright on SD-OCT compared with the surrounding areas with an intact retinal pigment epithelium because of increased reflectivity from the underlying choroid. SD-OCT and FAF both identified GA reproducibly, and measurement of the area of GA is comparable between the two methods with a mean difference of 2.7% of the total area.

CONCLUSION:

SD-OCT can identify and quantitate areas of GA. The size and shape of these areas correlate well to the areas of GA seen on autofluorescence images; however, SD-OCT imaging also provides important cross-sectional anatomic information.

PMID:
19320296
[Indexed for MEDLINE]

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