Macular edema refers to a lesion in which intracellular fluid accumulates in the macula or interretinal tissue fluid accumulates, and the thickness of the macular tissue increases. Macular edema is not a stand-alone eye disease, it is the result of various causes, such as inflammation, tumors, trauma and other factors cause blood vessels, cells and other tissues around the retina fluid leakage accumulation in the macula. Macular edema can have an impact on vision, and patients may experience discomfort such as distorted vision and vision loss. Macular edema should be treated according to different causes, such as macular edema caused by vascular diseases can be treated with drugs such as Ranibizumab injection or anti-inflammatory treatment such as Triamcinolone acetonide injection, and some patients with macular edema can be treated with surgical procedures to release the pulling of macular area, such as vitrectomy. It is recommended that patients with macular edema consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.