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Hard Exudates - Differentials!




Hard Exudates on the Retina!


-Caused by chronic localized retinal edema.

-They develop at the junction of normal and edematous retina.

-They are composed of lipoprotein and lipid-filled macrophages.

-Location: Mainly OPL and INL.

- Hyperlipidaemia may increase the likelihood of exudate formation.


HOW TO DESCRIBE THEM:

-Waxy yellow lesions with distinct

margins arranged in clumps and/or rings at the posterior pole.


-When leakage stops, exudates get absorbed over months, either into healthy surrounding capillaries or by phagocytosis.


On FFA: Seen as hypo-fluorescent.



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