Acute idiopathic blind spot enlargement without optic disc edema.

Abstract

<h3>To the Editor.</h3> —We read with interest the report by Fletcher et al¹on acute idiopathic blind spot enlargement (AIBSE) without optic disc edema. Using multifocal electroretinographic techniques, these authors postulated that retinal dysfunction was at fault and ascribed their patients' complaints cases to a heretofore undescribed syndrome. We wish to draw attention to the great similarity between this condition and the multiple evanescent white-dot syndrome (MEWDS).^2,3 Photopsias, scotomata, a predominance among young women, occasional recurrences and bilaterality, electroretinographic abnormalities, and resolution within months are features common to both MEWDS and AIBSE, but fundus and fluorescein angiographic features typical of MEWDS early in the disease process were not described in patients with AIBSE. Several factors may explain this. The funduscopic findings may be very subtle and fleeting,^2,3hence the appropriate term<i>evanescent</i>. Additionally, symptoms and signs of the condition persist after the characteristic white dots fade,^2,3