["En face" optical coherence tomography for multiple evanescent white dot syndrome].

Introduction: Multiple evanescent white dot syndrome (MEWDS) is a rare, usually unilateral, retinal disease associated with transient loss of vision. Its pathogenesis remains elusive. The purpose of this study was to determine the spatial location of the lesions in the neurosensory retina of a patient with MEWDS, using a new technology, i.e. "en face" optical coherence tomography ("en face" OCT).
Methods: A 21-year-old woman presenting with bilateral MEWDS underwent Cirrus(®) OCT with advanced "en face" reconstructions of the various retinal layers and inner choroid, fluorescein angiography, and infracyanine green angiography (ICGA).
Results: During the acute stage of MEWDS, advanced "en face" visualization mode of the IS/OS photoreceptor junction and the inner choroid showed areas of strong signal attenuation, forming a spot pattern identical to that of the hypofluorescent IGCA dots. One month later, visual acuity returned to 20/25 in both eyes and the reflectivity map of the IS/OS junction and inner choroid displayed no areas of signal attenuation.
Conclusion: "En face" OCT is a new, noninvasive technology, capable of visualizing specific attenuation of the IS/OS junction in MEWDS, which form a spot pattern identical to those revealed by ICGA.
(Copyright © 2013 Elsevier Masson SAS. All rights reserved.)