Dyes are now an important ingredient in many of the
medical tests. Many of the tests that are carried out on patients use
the dye to get accurate results. One such example is that of Fluorescein
angiography. Fluorescein angiography derives its name from fluorescein,
the dye that is used is very successfully for carrying out the tests.
Angiogram is a very valuable test that gives information about the
The process of Fluorescein angiography test works like this.
First a special dye, called fluorescein is injected into a vein in the
arm. Within seconds, the dye reaches the blood vessels inside the eye. A
camera with special filters that will highlight the dye is used for
photographing the fluorescein as it keeps on circulating through the
blood vessels in the back of the eye. The dye has the ability to detect
abnormalities like circulation problems, swelling, leaking or abnormal
blood vessels, which it will show in the photographs. The doctor then
decides on the diagnosis, and possible treatment options.