Question: what is the difference between cystoid macular edema and diabetic macular edema?
Answer: It is a term that was created to establish when laser treatment was necessary to treat the macular edema due to diabetic retinopathy. Cystoid Macular Edema (CME) – this is a bit more esoteric. It refers to macular fluid, or thickening, from really any cause, except diabetes.