Multiple evanescent white dot syndrome

Multiple evanescent white dot syndrome (MEWDS) is a rare eye disease that primarily affects young adults. It is characterized by the sudden onset of blurred vision, often accompanied by the appearance of multiple small, white dots in the retina.

Symptoms

The primary symptom of MEWDS is sudden, painless vision loss in one eye. This is often accompanied by the appearance of multiple small, white dots in the retina. Other symptoms may include photopsia (flashes of light), scotoma (blind spots), and dyschromatopsia (impaired color vision).

Causes

The exact cause of MEWDS is unknown. However, it is often associated with a recent viral illness, suggesting that it may be triggered by an immune response. Some researchers believe that MEWDS may be a variant of acute zonal occult outer retinopathy (AZOOR), a similar eye disease that also appears to be immune-mediated.

Diagnosis

MEWDS is diagnosed based on the characteristic appearance of the retina on fundus examination. Additional tests, such as fluorescein angiography and optical coherence tomography (OCT), may be used to confirm the diagnosis and rule out other eye diseases.

Treatment

There is no specific treatment for MEWDS. Most cases resolve spontaneously within a few weeks to months. In some cases, treatment with corticosteroids may be considered to reduce inflammation and speed recovery. However, the potential benefits of this treatment must be weighed against the risk of side effects.

Prognosis

The prognosis for MEWDS is generally good. Most patients experience a complete recovery of vision within a few weeks to months. However, some patients may have persistent visual abnormalities, such as blind spots or impaired color vision.

See also

• Acute zonal occult outer retinopathy
• White dot syndromes
• Retina

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