Fluorescein Angiography is a medical imaging technique used to visualize the blood vessels in the retina. During the procedure, a fluorescent dye called fluorescein is injected into a vein, usually in the arm. As the dye travels through the bloodstream, a special camera captures images of the retina, highlighting any abnormalities in the blood vessels. This technique is commonly used to diagnose and monitor various eye conditions, such as diabetic retinopathy, macular degeneration, and retinal vein occlusion. By providing detailed images of the retinal circulation, fluorescein angiography helps eye care professionals make informed treatment decisions.