How It Is Done
An eye angiogram is done in a hospital
or doctor's office by an
Before the test, the
doctor uses drops to widen, or dilate, your pupils. You will be seated in a
chair facing the camera. You should loosen or remove any restrictive clothing
around your neck. You will be asked to place your chin on a chin rest and your
forehead against a bar to stabilize your head. Keep your teeth closed, open
your eyes as widely as you can, and stare straight ahead while breathing and
blinking normally. A few photographs will be taken.
IV needle is then placed in a vein in your arm and the
dye is injected. Once injected, it takes about 10 to 15 seconds for the dye to
be visible in the blood vessels in your eyes.
As the dye enters
the eyes, the doctor takes a rapid series of photos for a few minutes. The
photos show the dye's progress through the blood vessels in your eyes. The dye
makes the blood vessels show up clearly in the photos. More photos are taken
after most of the dye has passed through the eyes to see whether any of the
blood vessels are leaking the dye. If dye leaks out of a blood vessel, it will
color the surrounding tissue and fluid in the eye.
usually takes about 30 minutes, unless additional photos are needed. If more
photos are needed, you will rest for 20 minutes before 5 to 10 more photos are
taken. Photos can be taken up to 1 hour after an injection.
How It Feels
When fluorescein dye is injected into
your arm, you may notice a metallic taste in your mouth, mild nausea, and a
brief sensation of warmth.
After the test, your skin, the whites
of your eyes, and your urine may be bright yellow or orange, but these effects
wear off in 24 to 48 hours.
Because of the dilating eyedrops,
your vision may be blurred, and your eyes may be sensitive to light for up to
12 hours. Avoid bright light and sunshine. Wear dark glasses when you go
While the fluorescein dye is injected, you may
become nauseated and feel flushed. These symptoms pass quickly.
Some people are allergic to the dye. Tell your doctor if you feel lightheaded, need to vomit, or have
hives after the dye is injected. Very rarely, a person may have a serious allergic
reaction (anaphylaxis) and need emergency care.
leaks out of the vein around the injection site may cause pain and may injure
The dye may pose a risk to a
fetus. If you are pregnant, talk to your doctor about