頭蓋内グリオーマの眼症状—特に視野変化について

Visual field changes due to intracranial glioma

緒　言

　視交叉より上位の視覚路障害について，従来より多くの検討がなされているにもかかわらず，視覚路の詳細についてはなお見解の一致をみていない^1〜4）。

　今回，われわれは頭蓋内腫瘍のうち，グリオーマ症例につき，CT所見を含め，病巣の局在，性状と眼症状，主に視野変化について検討し，若干の知見を得たので報告する。

　We evaluated changes in the visual field in 30cases of intracranial glioma during the past 7-year-period.

　Incongrous homonymous hemianopsia or quandrantopsia was present in gliomas of the cerebral hemisphere including the temporal, parietal and occipital lobes except for the visual center of the cerebral hemisphere. After surgical removal of tumors the visual field became congruous. We assumed that the incongruity of the visual field changes was clue to the infiltrative nature of the tumor and also to the dissociation of corresponding nerve fibers.