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Fluorescein angiography:
Case eight
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What is this picture?
Answer
This is an indocyanine green angiogram of the left
fundus. The choroidal circulation is well shown as
compared to that of the fluorescein angiography.
This is because ICG is more highly bound
to the serum protein than the fluorescein sodium
and therefore leakage into the choroidal space
is minimal. ICG is useful for the study of
choroidal circulation and is used to identified
subretinal neovascular membrane which may
not be apparent on the fluorescein angiography.
In addition, it is useful in the diagnosis of
idiopathic polypoidal choroidal vasculopathy.
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