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. 2021 May 24;11(6):939. doi: 10.3390/diagnostics11060939

Figure 2.

Figure 2

Indocyanine green angiography (ICGA). The ICG-protein complex remains intravascular in retinal vessels rendered impermeable by tight-junctions and in the large choroidal vessels but extrudes freely from the fenestrated choriocapillaris and impregnates progressively the choroidal stroma. It is these intermediate and late angiographic phases that are important for the evaluation of choroiditis.