[Branch artery occlusion due to focal necrotizing retinitis -- probably caused by toxoplasmosis (author's transl)].

A case of necrotizing retinitis, probably due to toxoplasma gondii, is described in a 21-year-old man. Transient occlusion of the arteriole lying over the lesions was confirmed angiographically. The presence of inflammatory chorioretinal foci in the vicinity of retinal vessels was documented photographically in three other cases. The fundus changes and the field defects in these patients suggested that retinal perfusion had been temporarily impaired. The customary administration of steroids combined with antibiotics appears justified in order to minimise the occurrence of retinal vascular damage in the presence of necrotizing retinitis.