To the Editor: —Some years ago a child was brought to me who had suddenly developed partial blindness during an attack of rubeola. Ophthalmoscopic examination revealed choroiditis, which advanced to partial atrophy. This case caused me to investigate, and revealed the fact that but few cases of choroidal atrophy can be found which will not furnish a previous history of rubeola. Swanzy states that rubeola may be the cause of purulent choroiditis, but there is scant if any reference to it in the text-books. In one case an intelligent young woman was referred by me to an eminent oculist for an obscure tumor of the fundus following rubeola. This tumor disappeared to be followed by choroidal atrophy. I have found no drugs of any value—the treatment must be preventive.