This is a report of 3 cases of macular disease which we believe most nearly fall under the diagnostic entity called juvenile macular exudative choroiditis, or juvenile disciform macular degeneration, described by Junius in 1930.1 Because of the ease with which the disease may be mistaken for early malignant melanoma, the differential diagnosis of this condition is of some importance. All the patients were young, healthy adults, in whose condition neither trauma nor any antecedent illness seemed to play a part. Their uniform complaint was a rather gradual depreciation of central vision in one eye only, which progressed within a matter of weeks until visual acuity was approximately 6/100, with an absolute central scotoma corresponding in size and shape to the ophthalmoscopically visible lesion in the macula. The lesions when first seen were approximately the same in 2 cases. In the third case the lesion was older and was