The occurrence of a choked disk type of elevation of the nerve head in the course of a general disease has often led to difficulty and confusion in diagnosis. Examination of the fundus in these circumstances has led to the tentative diagnosis of brain tumor, but further investigation directed toward proving this has been in vain. However, since the spinal fluid pressure is often elevated, the neurologist or the neurosurgeon may be convinced that primary cerebral disease exists. The literature on the subject has been extensive, and the various opinions concerning the meaning of the elevation of the nerve head have been particularly well reviewed by Larson.1 Case reports include Cushing and Bordley's2 description of a case of nephritic neuroretinitis in which relief of the increased intracranial pressure by decompression resulted in improvement in the neuroretinitis. In 1924 Larson1 reported 11 cases in which nephritic retinitis was