Abstract:  The relationship between eye and nervous system is anatomically and physically very close. Seven of twelve cranial nerves are straightly correlated with visual afferent or eye movement．Many diseases of neurosurgery are related to ophthalmology, including cranial trauma, tumor, vascular disease, idiopathic intracranial hypertension, hemifacial spasm, hydrocephalus, and so on. Objective of surgery is curing symptoms, saving eyesight and even life. Better understanding of the relationship between eye and brain, together with intimate cooperation, among ophthalmologists, neurosurgeons, neurologists and other specialties, is the foundation to early diagnosis and reasonable treatments. (Ophthalmol CHN， 2015, 24: 4-7)

Key words: neuro-ophthalmology, neurosurgery, optic nerve