Retinal periphlebitis and retinal pigment epithelium changes associated with multiple sclerosis: a report of two cases.

Two patients with definite MS and no significant visual loss are presented, because of the marked bilateral sheathing of retinal veins, and diffuse pigmentary changes in the first patient, and the previously unreported paravenous pigmentation with bone corpuscular configuration in the second patient. The lesions in the second patient are similar to paravenous retinitis pigmentosa. We assume that the RPE lesions may be secondary to perivasculitis, which is not uncommonly seen in MS patients.