Optometry & Vision Science

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Optometry & Vision Science:
Case Report

Multiple Evanescent White Dot Syndrome and Acute Zonal Occult Outer Retinopathies


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Background. Multiple evanescent white dot syndrome (MEWDS) is a rare, acute, multifocal retinitis located in the posterior pole. Patients with MEWDS may report photopsia, central scotoma, or decreased vision. Prodromal viral-like symptoms may be associated with this syndrome, but its etiology remains unknown. The condition is self limiting with a favorable prognosis for visual recovery within several weeks.

Case Report. A young, myopic, female patient presented with painless photopsia, scotoma, and subsequent vision loss secondary to MEWDS. The clinical appearance, differential diagnosis, and management of MEWDS are discussed.

Discussion. Careful ophthalmoscopic and angiographic interpretation along with complete history taking are the keys to diagnosing MEWDS. Ancillary testing including electroretinogram, early receptor potential, and visual fields aid in the differential diagnosis. Once the diagnosis has been established, patient reassurance is appropriate in the management of this condition.

© 2003 American Academy of Optometry


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