Fluorescein Angiography is a valuable, in-office diagnostic test that we routinely use to evaluate and better understand a wide range of retinal conditions. During the procedure, a small amount of orange fluorescein dye is injected into a vein in the patient’s arm. The dye quickly circulates through the bloodstream, including the blood vessels of the eyes. Using a special camera and timed flashes of light, we capture detailed images of the dye as it passes through the retinal vessels and the pigmented layer behind the retina. This allows us to detect abnormalities such as leakage, blockage, or irregular blood flow in the retina. No radiation or X-rays are used during the procedure. The dye is similar to contrast agents used in imaging studies like MRI or CT scans, but it is not the same.

Mild side effects may include a temporary yellowish tint to the skin and a bright yellow color in the urine for several hours. Up to 5% of patients may experience brief nausea, which typically resolves within minutes. Less commonly, patients may notice mild itching or dizziness. Serious allergic reactions-such as those affecting the heart or breathing-are extremely rare. If we recommend fluorescein angiography, we will review all potential risks and answer any questions you may have to ensure your safety and comfort during the procedure.