Fundus Fluorescein Angiography (FFA)


This test involves injecting dye into the bloodstream and taking a picture of it as it runs through the eyes. It allows careful study of the retinal circulation.
In most imaging techniques, the dye appears white against a darker background.

fluorescein

Normal fluorescein study

fluorescein-angiography-2

Fluorescein demonstrating leakage from the blood vessels