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Fluorescein Angiography

What is Fluorescein Angiography?

Fluorescein Angiography is a test in which a special dye called fluorescein is used to visualize the blood flow in your retina (light sensitive layer in your eyeball) and choroid (the layer responsible for supplying nutrients to the inner parts of your eye).

How is Fluorescein Angiography done?

You will first be given eye drops to dilate your pupils (the hole in the centre of the coloured part of your eye). Then you will be asked to keep your chin on the instrument’s chin rest and rest your forehead against a support rod to prevent any movement of your head while the test is being performed. A camera takes pictures of the structures inside your eye. After a few images are taken initially, the yellow coloured fluorescein dye is injected into a vein in your arm. This may produce a slight warm feeling. Then, as this dye travels the blood vessels inside your eye, the camera takes pictures again. Your skin may appear pale yellow and urine darker for a couple of days. This wears off on its own.

Why is Fluorescein Angiography done?

 

This test is done to check for any blockages or leaks in the blood vessels of your eye’s retina or choroid. This may be seen in diseases like:

• Cancers
• Diabetic retinopathy
• High Blood Pressure
• Macular Degeneration
• Micro-aneurysms (bulging of retinal capillaries)
• Swelling of optic disc (a part of retina)
• Detachment of the retina