Diabetic retinopathy (DR) is a chronic progressive, potentially sight-threatening disease of the retinal microvasculature associated with the prolonged hyperglycaemia and other conditions linked to diabetes mellitus such as hypertension (1).
The risk of developing diabetic retinopathy is greater with longer duration of diabetes
A change in vision in DR has two basic mechanisms:
From 1990–2010, diabetic retinopathy (DR) ranked as the fifth most common cause of preventable blindness and fifth most common cause of moderate to severe visual impairment (5)
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