Alternative Names: Retinal photography; Eye angiography Definition: Fluorescein angiography is an eye test that uses an special dye and camera to look at blood flow in the retina and choroid. By looking into the back of your eye (the retina), eye doctors can see changes in the blood vessels there that show whether you are at risk for losing vision from diabetes or other causes. The earliest changes can be seen only with a special test called fluorescein angiography. For this test, a chemical