Cystoid macular edema is an eye condition in which the macula, tissue in the middle of the retina responsible for visual acuity, becomes swollen, according to Cleveland Clinic. The swelling tends to create a cyst-like pattern, hence the name cystoid macular edema
The primary symptom of cystoid macular edema is wavy or blurry vision, especially in the center of an individual's field of view, notes Cleveland Clinic. Sometimes patients report that the condition changes the appearance of certain colors. On the other hand, some people with cystoid macular edema have no symptoms at all.
A variety of conditions can cause cystoid macular edema, including surgery for a retina detachment or
to remove cataracts, according to Cleveland Clinic. Other causes include diabetes, medication side effects, eye injury or inflammation, age-related macular degeneration and blockage of blood veins in the retina.
The treatment for cystoid macular edema depends on the underlying cause of the condition, Cleveland Clinic explains. Treatment may include injections or topical therapy to reduce the swelling, and patients may be referred to a retina specialist for additional treatment. Successful treatment may take time. Although most patients do regain their visual acuity, follow-up monitoring by an eye doctor is important.