What
is a FLUORESCEIN ANGIOGRAM?
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A fluorescein angiogram
is a test used to examine the retina and diagnose a range of different
retinal conditions such as macular degeneration, macular oedema,
diabetic retinopathy or vein occlusions.
The procedure involves a small injection of a special diagnostic
dye. Photographs of the retina and the blood vessels are then taken
as the dye circulates through the blood stream (choroidal and retinal
circulations). This test allows a detailed evaluation of any blockage,
leakage of dye, or areas of ischaemia (poor circulation) and is
important for the Doctors to diagnose or monitor your eye condition.
For 24-48 hours after the procedure your skin may appear slightly
yellow and your urine will be bright yellow/orange. This is normal
and you should not be alarmed. Drinking plenty of water after your
procedure will assist the kidneys to excrete the dye.
The procedure usually takes about half an hour to complete. The
retina is photographed using a specialized digital camera as the
dye travels through the retinal circulation. Bright flashes of light
from the camera will be experienced. After having a fluorescein
angiogram, we advise that you do not drive home yourself home after
the appointment and you are accompanied by a family member or friend.
The risks associated with injection of fluorescein are low; most patients
do not experience any significant side-effects from the fluorescein
angriogram. However, a small percentage of patients will experience
nausea and/or vomiting following the dye injection and very rarely
some might have an allergic reaction to the dye (anaphylactic reaction).
Other adverse reactions include headache, lower back pain, low blood
pressure, or fainting.