[The significance of vision disorders in the early diagnosis of subacute sclerosing panencephalitis]. / Die Bedeutung von Sehstörungen für die Frühdiagnose der subakuten sklerosierenden Panenzephalitis.

Visually evoked potentials were studied in a group of ten patients with subacute sclerosing panencephalitis. In all cases the results indicated an impairment of the optical system in relationship to the individual phase of the disease. This examination technique is a valuable aid in the early diagnosis and observation of the course of subacute sclerosing panencephalitis.

[Visual evoked potentials in cases of damage to visual pathways at different levels]. / Wzrokowe potencjaly wywolane w przypadkach uszkodzenia dróg wzrokowych na róznych poziomach.

Visual potentials induced with a checker pattern were studied in a group of patients with damage to the visual pathways at different levels, and were compared with similar potentials in 10 adult subjects without diseases. A statistically significant prolongation of latency of the main deflections (N1, P max and N2) was observed in the group of 14 patients with optic nerve damage, while in 10 patients with lesions above the chiasma different, often normal responses were obtained. High-grade deformity of visual potentials was observed in 2 cases of visual agnosia. The study of visual evoked potentials may be in the opinion of the authors, useful in cases of damage to the optic nerve, retina and cortical visual centres.