Multiple evanescent white dot syndrome.
Three patients had documented fundus changes conforming to those of the recently described multiple evanescent white dot (MEWD) syndrome. All three patients were unilaterally affected with variously sized, soft, single, and coalescent white lesions at the level of the RPE and the deep retina. Fluorescein angiography demonstrated early staining and hyperfluorescence of the white dots and delayed staining around the optic disc. Some degree of optic disc edema could be seen in all three eyes, two of which had corresponding field defects. In all three eyes, characteristic "stippling," or granularity, of the affected macula developed rapidly and vitreal cells were observed. One eye had signs of previous perivascular inflammation. ERG studies performed on one patient indicated a reduction in the a-wave and depression of the ERP, findings that correlated with the clinical observations of RPE affectation.