eye disorders
Tests for Eye Disorders
Angiography
In general, angiography involves injecting dye into blood vessels to make them more visible on imaging tests. Angiography of the eye, however, uses dye to make blood vessels more visible when doctors directly examine or photograph them. Fluoresceinangiographyallows a doctor to clearly see the blood vessels at the back of the eye. A fluorescent dye, which is visible in blue light, is injected into a vein in the person's arm. The dye circulates through the person's bloodstream, including the blood vessels in the retina. Shortly after the dye is injected, a rapid sequence of photographs is taken of the retina, choroid, optic disk, iris, or a combination. The dye inside the blood vessels fluoresces, making the vessels stand out. angiography is particularly useful in the diagnosis of Age-Related Macular Degeneration (AMD or ARMD) , Indocyanine greenangiographyallows doctors to see the blood vessels of the retina and choroid. As influoresceinangiography, a fluorescent dye is injected into a vein. This type of angiography gives doctors more detail of the blood vessels of the choroid thanfluoresceinangiography.Indocyanine greenangiography is used to show macular degeneration and detect the development of new blood vessels in the eye. 