What causes retinal edema and hard exudates in diabetic retinopathy?

Updated: Sep 02, 2021
  • Author: Abdhish R Bhavsar, MD; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Retinal edema and hard exudates are caused by the breakdown of the blood-retina barrier, allowing leakage of serum proteins, lipids, and protein from the vessels.

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