Diabetic macular edema with microaneurysm
Figure 1: Diabetic macular edema with intraretinal edema secondary to leakage from the microaneurysm located in the center of the cyst.
Figure 2: Diabetic macular edema with intraretinal fluid/cysts and subretinal retinal fluid. Leakage can occur from microaneurysms located in the intraretinal layers and spread into the subretinal space leading to a serous detachment.
Figure 3: Diabetic macular edema with MA.
ETDRS definition of diabetic macular edema (DME):
Retinal thickening at or within 1 disc diameter of the center of the macula or definite hard exudates in this region
ETDRS definition of clinically significant macular edema (CSME):
- Thickening of the retina at or within 500 microns of the center of the macula
- Hard exudates at or within 500 microns of the center of the macula, if associated with thickening of adjacent retina (not residual hard exudates remaining after disappearance of residual thickening)
- A zone or zones of retinal thickening 1 disc area or larger, any part of which is within 1 disc diameter of the center of the macula
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