title: [A valve for microsurgical decompression of optic nerve sheets].
abstract: The authors describe a valve for optic nerve sheath fenestration. The valve is composed of a silicone tube with one end placed between the two layers of the arachnoïd at the top of the optic nerve head and the other end blocked but laterally fenestrated with two slits, fixed to the sclera with two small silicone wings. The pressure inside the tube can open the two slit openings when greater than ten millimetres of mercury. This valve has been designed in order to obtain a better function for optic nerve sheath fenestration operations.
authors.affiliation: Service d'ophtalmologie, CHU Dupuytren, Limoges.
authors.forename: J P
authors.initials: JP
authors.lastname: Adenis
authors.forename: J L
authors.initials: JL
authors.lastname: Salomon
mesh_terms: D006801:Humans; D007429:Intraocular Pressure; D008866:Microsurgery / Q000379:methods; D009186:Myelin Sheath; D009900:Optic Nerve / Q000601:surgery*
vernacular_title: Une valve pour la décompression microchirurgicale des gaines du nerf optique.