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Fluorescein Angiography


Updated July 27, 2009

Definition: Fluorescein angiography is a technique used to examine the circulation of blood in the retina. The test is performed by injecting a special dye, called fluorescein, into a vein in the arm. The dye travels quickly to the blood vessels inside the eye. A special camera is then used to photograph the fluorescein as it circulates though the blood vessels in the back of the eye. If the blood vessels are abnormal, the dye may leak into the retina or stain the blood vessels.

Fluorescein angiography is an extremely valuable test that provides information about the circulatory system and the condition of the back of the eye. Fluorescein angiography is often used in the monitoring of diabetes, a disease that can cause the blood vessels of the retina to leak blood or fluid. Fluorescein angiography can also help your eye doctor determine the exact location of a leak in order to accurately guide possible laser treatments.

After injection of fluorescein dye, your skin may turn a yellowish color for several hours. Your urine may also change colors, turning a dark orange for up to 24 hours as the dye is removed by the kidneys.

Also Known As: Fluorescent angiography
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