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شانت شریانی وریدی
Some venous capillaries are dilated, there are microaneurysms, arteriovenous shunts and roundish, hence deep, hemorrhages (Fig. 2).
At the level of ischemic areas, arteriovenous shunts can be observed, formed by pre-existing capillary segments, dilated in such a way as to form a short-circuit between vein and artery while other capillaries are closed and not visible on the fluoroangiography.
Some venous capillaries are dilated, there are microaneurysms (white arrow), arteriovenous shunts (yellow arrow) and roundish hemorrhages.
The area of non-perfusion is less fluorescent than the normal retina, the color is a deeper uniform grey; on the edges of the ischemic territory, there are microaneurysms and arteriovenous shunts.
The ischemia areas, in some cases, are crossed by arteriovenous shunts formed by residual dilated capillaries that form direct communication between arteriole and vein with stained hyperfluorescent walls.
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