What causes Cystoid Macular Edema?
Many cases of cystoid macular edema develop in patients who have had recent eye surgery, such as cataract surgery, as well as patients with diabetic retinopathy, uveitis and retinal vascular disease. In patients who develop this following cataract surgery, the normal post-operative inflammation may cause the blood vessels in the center part of the retina to start to leak. As leakage occurs, the tissues begin to swell which can lead to blurred or distorted vision.