Diabetic Retinopathy Microaneurysms

By posted on January 22, 2014 12:00PM
Diabetic Retinopathy Microaneurysms

Diabetic Retinopathy Microaneurysms

Microaneurysms are localized out-pouchings, mainly saccular, of the capillary wall that may form either by focal dilatation of the capillary wall where pericytes are absent, or by fusion of two arms of a capillary loop . Most develop in the inner capillary plexus (inner nuclear layer) . Microaneurysms may leak plasma constituents into the retina as a result of breakdown in the blood–retinal barrier, or become thrombosed

Diabetic Retinopathy Microaneurysms
Diabetic Retinopathy Microaneurysms
1 Signs. Tiny red dots, often initially temporal to the fovea; tend to be the earliest signs of DR . They may be indistinguishable from dot haemorrhages.
2 Fluorescein angiography (FA). Early frames show tiny hyperfluorescent dots , representing non-thrombosed microaneurysms. Late frames show diffuse hyperfluorescence due to leakage.

Source: 

Ophthalmology Atlas(Photos of cases)

Diabetic Retinopathy Microaneurysms

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