A fluorescein angiography is a medical procedure in which a fluorescent dye is injected into the bloodstream of the patients. The dye highlights the blood vessels in the back of the eye so they can be photographed easily. This test is often used for the management of the eye disorder. Your doctor may arrange it to confirm an analysis, settle on an appropriate treatment, or monitor the condition of the vessels in the back of the eye.
To determine the blood vessel in the back of the eye is getting an adequate amount of blood supply the doctor recommends the fundus fluorescein angiography. It helps the doctor to diagnose the eye disorder such as macular degeneration or diabetic retinopathy.
Preparation of the test
You will need to make arrangement and ask someone to pick you after the test and drive you home because your pupil will be dilated during the examination and will be in the same condition for about 12 hours after the test. If you are taking any medicine, over the counter drugs or any kind of herbal supplement you need to tell the doctor before the test. Also if you are allergic to iodine you must tell your doctor about it. If you are wearing the contact lenses remove it before the test is conducted.
Administration of the test
The doctor will at the beginning of the test insert standard dilation eye drop into the eyes of the patient. This will result in dilating the pupil of your eye. You can then rest your chin and forehead against the camera so that your head remains still right through the test. Your doctor with the help of camera will take pictures of your inner eyes. Once the doctor has finished taking the picture of the back of the eye he will give you an injection into the vein from your arm. The injection has special dye called fluorescein. Again the picture of the eyes is taken as the dye moves through the blood vessels into the retina of the eye.
Risks of the test
The most common reaction is nausea and vomiting. You may also feel the dryness in the mouth or increased salivation increased heart rate, and sneezing. Some other allergic reaction may include the following:
- Swelling of the larynx
- breathing difficulty
- the patient might faint
- cardiac arrest
Pregnant women should not go for this test.