When you experience distortions and distortions in your vision, you may have macular degeneration. If your eye exam says you have macular edema, you must want to know what is macular edema? What are the treatment methods? 1.What are the causes of macular edema? There are many causes of macular edema, many fundus pathologies may cause macular edema, among which the most common causes are diabetic retinopathy, retinal vein obstruction, macular edema secondary to cataract surgery, other causes are retinal capillary dilatation (Coat’s disease), uveitis, retinal vasculitis, etc. 2.What is the manifestation of macular edema? The main manifestations of macular edema are blurred vision, loss of vision and distortion of visual objects. 3.What kind of examination is needed for macular edema? It is mainly ophthalmologic examination: visual acuity, intraocular pressure, slit lamp examination glasses, optical coherence tomography (OCT), fundus fluorescence angiography. Among them, the most important is OCT examination, which can check the severity of macular edema. 4.What are the treatment methods of macular edema? At present, the treatment effect of macular edema is better than intraocular drug injection to eliminate macular edema. There are two major categories of injectable drugs: one is VEGF antibody, the most commonly used is razumab, and the other is glucocorticoid such as tretinoin, long-acting dexamethasone extended-release agent, etc. Ozurdex is a long-acting hormone – -dexamethasone, which is currently used in the treatment of macular edema. Ozurdex is a long-acting hormone – dexamethasone, currently only Beijing Hospital carries out this treatment in China, it has a longer duration of action, maintaining treatment for half a year, longer than other drugs. For macular edema, of course, we also need to treat the cause, such as treating diabetic retinopathy, retinal vein obstruction and other primary diseases, often combined with laser treatment. In conclusion, early diagnosis and treatment are necessary to effectively improve symptoms, protect visual function and improve visual quality.