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Diagnostic Atlas
A Retinal Reference Guide
Geographic Atrophy (GA)
is associated with dry AMD and is any sharply
delineated round area of hypopigmentation
or apparent absence of the retinal pigment
epithelium (RPE) on colour images. Choroidal
vessels are more visible than in surrounding
areas and must be at least 175 μm in diameter.
opto
map
af
shows hyperautofluorescence
around the geographic atrophy that indicates
progression of disease.
Area of hyperautofluorescence
around GA
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Age-Related Macular Degeneration