fluorescein angiography
Pronunciation: /flʊəˈrɛsɪn ˌændʒiˈɑɡrəfi/
Also written as: FA — Fluorescein angiography
Diagnostic imaging technique using intravenous fluorescein dye to evaluate retinal and choroidal blood circulation.
Full Definition
Fluorescein angiography (FA) is a specialized photographic technique that provides detailed visualization of retinal and choroidal vasculature by injecting sodium fluorescein dye intravenously and capturing sequential images as the dye circulates through ocular blood vessels. The procedure reveals vascular abnormalities including leakage, blockage, neovascularization, and perfusion defects that are invisible on routine examination. FA is essential for diagnosing and monitoring conditions such as diabetic retinopathy, age-related macular degeneration, retinal vein occlusions, and inflammatory retinal diseases, providing crucial information for treatment planning and follow-up care.
Usage
Usage note: Document any allergic reactions or adverse events; obtain informed consent for IV dye injection.
In Context
- "Fluorescein angiography revealed areas of capillary nonperfusion in the diabetic patient's retina." — Diagnostic report
- "The patient experienced mild nausea during fluorescein angiography, which resolved quickly." — Procedure note