视交叉(optic chiasm),系视神经的一段。此段位于蝶鞍上,故蝶鞍区域组织有病变时,多波及视交叉可产生不同程度的视野缺损及视力障碍;是双侧视神经部分纤维在中线交叉形成的结构。来自两眼视网膜颞侧半的纤维不交叉,各自进入不同侧的视束中;来自视网膜鼻侧半的纤维交叉,进入对侧视束。视交叉一般位于蝶鞍上方,鞍结节之后,垂体的前上方。若视交叉位于鞍结节之前,则称前置性视交叉;视交叉后移近鞍背时,称后置性视交叉。
视交叉 optic chism ; [解剖] optic chiasma ; [解剖] chiasma opticum ; optic decussation
视交叉上核 SCN ; Suprachiasmatic Nucleus
碍视交叉口 blind crossing
视交叉蛛网膜炎 chiasmal arachnoiditis ; chiasmatic arachnoiditis
视交叉的 opticochiasmatic
视交叉支 [解剖] chiasmatic branch
视交叉前置 Prefixed optic chiasm
视交叉前间隙 Prechiasmatic interspace
视神经-视交叉 optic nerve-chiasm
视上交叉 supraoptic decussation
目的提高视交叉下丘脑胶质瘤显微手术治疗水平。
Objective To improve the microsurgical techniques for chiasmatic-hypothalamic glioma.
外伤1例,表现为视交叉形态异常伴额叶软化灶;
Abnormal shape of optic chiasm with encephalomalacia of the frontal lobe was found in 1 case of trauma.
方法经额颞开颅,视交叉池二次注血法制作兔s AH模型。
Method: The primary SAH rabbit models were produced by introducing blood two times to Chiasmatic cistern through frontotemporal craniotomy.
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