This is an angiogram that uses a specific type of dye (indocyanine) to detect leaks or lesions in the blood vessels that supply the retina. Indocyanine green fluoresces in the presence of invisible infrared rays. For this, it is necessary to have cameras sensitive to these rays of light. An angiogram is done to explore the deep vessels of the choroid. It is necessary to resort to it in the treatment of age-related macular degeneration, because indocyanine is able to distinguish the deep vessels of the choroid, especially those that are hidden or blocked with blood. This procedure is also used to identify new vessels that supply blood to the neovascular membranes, which sometimes allows them to be treated directly by performing photocoagulation.
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