[Multiple evanescent white dot syndrome and acute idiopathic blind spot enlargement: angiographic and electrophysiologic findings].

Multiple white evanescent white dot syndrome (MEWDS) and acute idiopathic blind spot syndrome enlargement (AIBSE) are two acute retinopathies occurring in young patients: improvement is the rule. The present review describes two cases: one case of MEWDS and one of AIBSE. We observed these patients from the acute phase until absolute recovery. Comparing these two reports, we noted differences in ophthalmoscopic, fluorescein angiographics, and multifocal electroretinographic (mERG) analysis, but common findings were observed in clinical presentation and indocyanine green imagery. The first and recent description of these two disorders dates from less than 25 years ago. Although the pathophysiology is still unknown, some authors suggest that these two syndromes could be two different expressions of the same disease, depending on the patient's sensitivity. In our two case reports, multifocal ERG anomalies were directly related to visual impairment and visual field alterations. MEWDS and AIBSE are two acute retinopathies that must be recognized, because of the spontaneous visual recovery that the patient needs to understand for a good follow-up.