What is fundus angiography?
Fluorescein and indocyanine green 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. Indocyanine is a green dye that fluoresces with invisible infrared light; it requires a special digital camera sensitive to these light rays This indocyanine green angiography helps your doctor make the correct diagnosis and plan the best course of treatment especially in diseases like age related macular degeneration (AMD).
