Keane J R
Arch Ophthalmol. 1977 Dec;95(12):2180-3. doi: 10.1001/archopht.1977.04450120086008.
Anomalous optic discs may be associated with relative temporal visual field defects that need to be distinguished from bitemporal field defects of chiasmal compression. Two patients with both anomalous discs and suprasellar tumors were hospitalized with temporal hemianopic scotomatous visual field defects. A 19-year-old woman with a chromophobe adenoma had a monocular temporal hemianopic scotoma in the eye exhibiting an inferior-nasal disc crescent. A 22-year-old man with a hypothalamic-chiasmal germinoma causing bitemporal hemianopic scotomas had minor disc colobomas bilaterally. Careful study of the optic discs and posterior fundus, as well as evaluation of the characteristics of the temporal field defects, should distinguish chiasmal compression in the occasional case where suprasellar tumor and anomalous optic discs coincide.
异常视盘可能与相对的颞侧视野缺损有关，需要将其与视交叉受压导致的双颞侧视野缺损相鉴别。两名患有异常视盘和鞍上肿瘤的患者因颞侧偏盲性暗点视野缺损住院。一名患有嫌色性腺瘤的19岁女性，在出现鼻下盘状新月形的眼睛中存在单眼颞侧偏盲性暗点。一名患有下丘脑 - 视交叉生殖细胞瘤导致双颞侧偏盲性暗点的22岁男性，双侧存在轻微视盘缺损。对视盘和眼底后部进行仔细研究，以及对颞侧视野缺损的特征进行评估，应能在鞍上肿瘤与异常视盘同时存在的偶发病例中鉴别出视交叉受压情况。
