2021年6月28日 · Fluorescein angiography (FA) is when your ophthalmologist uses a special camera to take pictures of your retina. These pictures help your ophthalmologist get a better look at the blood vessels and other structures in the back of the eye.

Fluorescein angiography is a test to look at your retina. It uses a contrast dye to highlight your blood vessels. Eye specialists use fluorescein angiography to diagnose or monitor eye diseases, such as diabetes-related retinopathy or macular degeneration. Fluorescein angiography is a safe test but may cause side effects such as blurred vision.

There are 4 types of hyperfluorescence (brightness) in FA: Leakage: Hyperfluorescence progressively enlarges with fuzzy borders. The dye permeates out of leaky, incompetent blood vessels in the setting of neovascularization, retinal vasculitis, vascular malformations, tumors, or disc edema (dye leaks from prepapillary capillaries).

2024年2月13日 · Fluorescein angiography is a type of eye test used to diagnose retinal conditions. It can also be used as an early way to gauge whether someone might have complications...

Fluorescein dye is injected intravenously, usually through an antecubital vein with sufficient speed to produce high contrast images of the early phases of the angiogram. White light from a flash is passed through a blue excitation filter.

2021年8月20日 · The procedure involves injecting fluorescein dye, a vegetable-based dye, intravenously, most often into the antecubital vein of the arm; then, a retinal camera, equipped with the proper excitation filters and barriers, is used to obtain photographic images.

Fluorescein angiography[1] (FA), fluorescent angiography (FAG), or fundus fluorescein angiography (FFA) is a technique for examining the circulation of the retina and choroid (parts of the fundus) using a fluorescent dye and a specialized camera.

2023年8月25日 · Fundus fluorescein angiography (FFA) is an invasive diagnostic procedure. It helps to assess the anatomy, physiology, and pathology of retinal and choroidal circulation. It aids in the diagnosis of various ocular pathologies. It contributes to decision-making when planning the management of ocular pathology. It is also useful as a teaching tool.

Fluorescein angiography is useful for evaluating many eye diseases that affect the retina in the back of the eye. The study is performed by injecting a sodium-based dye into an arm vein. The …

Fluorescein angiography (FA) involves the use of a special dye and a camera to track the flow of blood through blood vessels in the back of the eye. 1. What is fluorescein angiography?