Spectral Domain Optical Coherence Tomographic Imaging of Geographic Atrophy - Ophthalmic Surgery, Lasers and Imaging -Optical Coherence Tomography News

Spectral Domain Optical Coherence Tomographic Imaging of Geographic Atrophy

Ophthalmic Surgery, Lasers and Imaging Sep 10 2008 Ophthalmology

BACKGROUND AND OBJECTIVE To compare images of geographic atrophy (GA) obtained using spectral domain optical coherence tomography (SD-OCT) with images obtained using auto fluorescence (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 ...
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