《英文msh詞典》Cranial Nerve II Diseases
[同義詞] Cranial Nerve II Diseases
[主題詞] Optic Nerve Diseases
[中文釋義] 第Ⅱ顱神經(jīng)病
[英文釋義] Conditions which produce injury or dysfunction of the second cranial or optic nerve,which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina,at the optic disk,or in the nerve,optic chiasm,optic tract,or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity,impaired color vision,and an afferent pupillary defect.