[Differential diagnosis of ischemic optic neuropathy (author' transl)]

The levels of the immunoglobulins IgA, IgM, and IgG, as well as the complement components C3 and C4 were measured in the sera of patients with vascular pseudopapillitis. The ischemic papilledema was caused by either temporal or idiopathic arteritis. In the temporal arteritis group, the levels of IgG, IgM and C4 were significantly higher than in the idiopathic group. However, these facts are of little value for the differential diagnosis of vascular pseudopapillitis, because there is a considerable overlapping of values in the two groups.