（45）視束幹の球後神経炎と蜘網膜炎について

Retrobulbar optic neuritis and arachnoiditis

　視束ないし視束幹の球後神経炎，即ち球後視束炎と，蜘網膜炎とは，もともとちがう病気である。

　処が，わが国の「球後視神経炎」は，蜘網膜炎と鑑別すべきものではなく，蜘網膜炎とよぶ方が学問的だなどといわれる^1）〜4）。

The author described two cases of papilledema associated with arachnoiditis, and discussed on the differentiation from the retrobulbar neuritis.The reported cases were as following :Case 1. A boy, aged 16 years, complained of asthenopia and visual disturbance which increased gradually in both eyes for the last three months.He was admitted to the hospital on December. 28, 1953. There was moderate papilledema in each eye. The retinal veins surrounding the optic discs were dilated and tortuous.

The visual fields were not constricted and there were no central scotomas, but showed a enlargement of the blind spot and a sector defeat. Neurological examination and pneumoence-pbalograms did not add to the occular findings.