Fluorescein angiography (FA) is an imaging modality used to study the circulation of the retina and choroid. About 5 mL of 10% sterile aqueous solution of fluorescein dye (or 2–3 mL of a 25% solution) is injected in the antecubital vein. The fluorescein molecules excited by a blue light (465–490 nm) emit green-yellow light (520–530 nm) (Fig. 2.1). The reflected blue light and green-yellow light are passed through a barrier filter that allows only the green-yellow fluorescent light to pass through and blocks the blue reflected light.
CITATION STYLE
Tsang, S. H., & Sharma, T. (2018). Fluorescein angiography. In Advances in Experimental Medicine and Biology (Vol. 1085, pp. 7–10). Springer New York LLC. https://doi.org/10.1007/978-3-319-95046-4_2
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