Fundus Fluorescein Angiography (FFA)
It provides uses information about the Retina and blood vessels. İt is applied by transfusion of a special dye (fluorescein) It is displayed by photo or video camera. There is very little risk of allergy while using medicine. If you have allergy to medicine, tell your doctor. It is used for imaging the vision center of the retina and the structure of blood vessels.