这个词是什么意思？
The X-shaped structure formed by the meeting of the two optic nerves. At the optic chiasm the fibers from the medial part of each retina cross to project to the other side of the brain while the lateral retinal fibers continue on the same side. As a result each half of the brain receives information about the contralateral visual field from both eyes.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D009897 · MeSH 2026。
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