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Macular Edema

Risk Factors
Diabetes
Retinal vein occlusion
Age-related macular degeneration
Intraocular inflammation or uveitis
Recent eye surgery (including cataract surgery)
Use of certain medications
Retinal scarring or traction
Previous retinal disease
Symptoms
Blurred or wavy central vision
Colors appearing washed out or faded
Dark or empty spots in central vision
Increased sensitivity to light (photophobia)
Distortion of shapes or sizes (straight lines appearing bent)
Difficulty reading or seeing fine details
Trouble recognizing faces
Vision that worsens over time if untreated
Treatment of macular edema depends on the underlying cause, as macular edema is a sign of retinal inflammation or vascular leakage rather than a disease itself. Identifying and treating the source of the swelling is the most important step in preserving vision.
For macular edema caused by diabetes or retinal vein occlusion, treatment commonly involves intravitreal injections that reduce fluid leakage and inflammation. Frequently used medications include Eylea, Avastin, and steroid-based treatments such as Ozurdex. These therapies can significantly reduce swelling and help stabilize or improve vision.
When macular edema is related to inflammation, such as after cataract surgery or in patients with uveitis, treatment may include steroid eye drops and nonsteroidal anti-inflammatory (NSAID) drops. The effectiveness of these medications depends on their ability to reach the retinal swelling, and treatment is tailored to each patient.
In some cases, macular edema develops due to traction from scar tissue or membranes on the retinal surface. When this occurs, vitrectomy surgery with membrane removal may be recommended to relieve traction and allow the retina to return to a healthier state.
Because untreated macular edema can lead to permanent central vision loss, ongoing monitoring and timely treatment are essential.