title: [Ultrasonographic evaluation of optic nerve avulsion with 10 and 20 MHZ probes: case report].
abstract: Traumatic optic nerve avulsion is a rare event. A case of complete unilateral optic nerve avulsion after blunt ocular trauma without major damage to other ocular structures is reported. B-scan ultrasonography with 10 and 20 MHz probes proved to be helpful in diagnosing the optic nerve lesion, whereas orbital computed tomography was inconclusive. The prognosis is ominous and it is dependent on the initial visual acuity, which was no light perception in this case. There is no efficient treatment for complete optic nerve avulsion, and no specific treatment was performed in this case.
authors.affiliation: Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Hospital das Clínicas, Ribeirão Preto, SP, Brasil. drlucena@hcrp.fmrp.usp.br
authors.forename: Daniel da Rocha
authors.initials: Dda R
authors.lastname: Lucena
authors.forename: Jefferson Augusto Santana
authors.initials: JA
authors.lastname: Ribeiro
authors.forename: Antônio Augusto Velasco E
authors.initials: AA
authors.lastname: Cruz
authors.forename: Aristóteles Rolim de
authors.initials: AR
authors.lastname: Lucena
authors.forename: Levy da Rocha
authors.initials: Lda R
authors.lastname: Lucena
mesh_terms: D000062:Accidents, Occupational; D006801:Humans; D008297:Male; D020221:Optic Nerve Injuries / Q000000981:diagnostic imaging* / Q000209:etiology; D014463:Ultrasonography; D014792:Visual Acuity; D014949:Wounds, Nonpenetrating / Q000150:complications*; D055815:Young Adult