Fundus Fluorescein Angiography (FFA) is a specialized eye test used to examine the blood vessels in the retina and the choroid (the layers at the back of the eye). It helps doctors detect and monitor conditions affecting the retina.
How it works:
- Fluorescein Injection: A yellow-orange dye called fluorescein is injected into a vein, usually in your arm.
- Circulation: The dye travels through your bloodstream and reaches the blood vessels in the eye.
- Photography: A special camera with a blue light takes a series of pictures of the retina as the dye passes through. The dye glows under the light, highlighting the blood vessels.
- Analysis: we are able to look for abnormalities such as leaking vessels, blockages, swelling, new blood vessel growth, or areas with poor blood flow.
Uses of FFA:
- Detecting diabetic retinopathy
- Age-related macular degeneration (AMD)
- Retinal vein or artery occlusions
- Macular oedema or swelling
- Tumours or abnormal blood vessel growth in the retina