Cystoid macular edema is a painless disorder which affects the central retina or macula. When this condition is present, multiple cyst-like (cystoid) areas of fluid appear in the macula and cause retinal swelling or edema.
Blurred or decreased central vision. If you experience this symptom, contact your eye doctor for a complete exam.
Although the exact cause of CME is not known, it may accompany a variety of diseases such as retinal vein occlusion, uveitis, or diabetes. It most commonly occurs after cataract surgery. Risk Factors
1-3 % of those who have cataract extractions will experience decreased vision due to CME, usually within a few weeks after surgery. If the disorder appears in one eye, there is an increased risk (possibly as high as 50%) that it will also affect the second eye. Fortunately, however, most patients recover their vision with observation or treatment.
Cystoid macular edema is usually diagnosed three ways:
Anti-VEGF agents – Ranibizumab (Accentrix), and Bevacizumab (Avastin) act by decreasing vascular permeability from disrupted endothelial cells.
Some cases do require repeat injections for permanent cure.
Surgery - Sometimes, the vitreous (the gel that fills most of the back of the eye) pulls on the macula causing CME (vitreomacular traction).