title: [Applied anatomy study of optic canal by transnasal endoscopy].
abstract: OBJECTIVE
  To provide transnasal endoscopic optic canal decompression with the anatomic reference.
  
  
  METHODS
  15 samples of the adult corpse wet specimen (30 sides for the optic canal) were examined under the endoscope to scrutinize the regional anatomy of the optic canal.
  
  
  RESULTS
  distance between the spina nasalis anterior and the midpoint of optic canal medial wall is (61.02 +/- 5.83) mm, and the angle between spina nasalis anterior and the midpoint of optic canal medial wall is (45.1 +/- 4.81) degrees. The medial wall of optic canal is longest, with an average length of (11.61 +/- 1.58) mm; the lateral wall of optic canal is thickest, and the medial wall thinnest. 10 traumatic blind patient underwent endoscopic optic canal decompression with satisfactory outcome.
  
  
  CONCLUSIONS
  The regional anatomy of the optic canal under endoscope is of importance to endoscopic optic canal decompression. Which is microinvasive with direct approach and clear view thus is widely used in clinical practice.
authors.affiliation: Department of Otolaryngology, Yinzhou People's Hospital of Ningbo, Ningbo, 315040, China. hjd413@yahoo.com.cn
authors.forename: Jianyao
authors.initials: J
authors.lastname: Zhang
authors.forename: Jianchun
authors.initials: J
authors.lastname: Liao
authors.forename: Youxiong
authors.initials: Y
authors.lastname: Yang
authors.forename: Qinkang
authors.initials: Q
authors.lastname: Lu
authors.forename: Jiandao
authors.initials: J
authors.lastname: Hu
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.forename: Cheng
authors.initials: C
authors.lastname: Cao
authors.forename: Shao
authors.initials: S
authors.lastname: Zhou
authors.forename: Jiaona
authors.initials: J
authors.lastname: Yan
mesh_terms: D000293:Adolescent; D000328:Adult; D001766:Blindness / Q000601:surgery*; D002648:Child; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009666:Nose / Q000033:anatomy & histology* / Q000601:surgery; D009900:Optic Nerve / Q000033:anatomy & histology* / Q000601:surgery; D009915:Orbit / Q000033:anatomy & histology* / Q000601:surgery; D055815:Young Adult