What is Fundus Fluorescein Angiography?
Fundus Fluorescein Angiography are tests that use special cameras to photograph the structures in the back of the eye. These tests are very useful for locating the damage to the blood vessels that nourish the retina (light sensitive tissue) and in turn, checking on the health of the retina itself. In both tests, a colored dye is injected into a vein in the arm of the patient. The dye travels through the circulatory system and reaches the vessels in the retina and those of a deeper tissue layer called the choroids. Neither of the tests uses any harmful forms of radiation.
Fluorescein is a yellow dye, which glows in visible light, it requires a special digital camera sensitive to these light rays This angiography helps your doctor make the correct diagnosis and plan the best course of treatment especially in diseases like age related macular degeneration (AMD).
How is fundus angiography done?
Before the procedure, you will be asked questions about your general health and the medications that you are using. A self-explanatory consent form, which explains the side effects in detail, will be provided to you. You will have to give your consent before the procedure. You should have a light meal before undergoing the procedure and must be accompanied by a family member or friend.
What are the side effects?
Fluorescein angiography are considered very safe and serious side effects from these tests are uncommon. However, there is the possibility that a patient may have a reaction to the dyes. While fluorescein contains no iodine and is safe in patients known to be allergic, Some people may experience slight nausea after the dye injection, but the feeling usually passes quickly.
Patients who are allergic to the dye can develop itching and a skin rash. These symptoms generally respond quickly to oral medications such as anti-histamines or steroids.