title: Diagnosis of a masked bilateral congenital superior oblique palsy.
abstract: Some patients in whom the diagnosis of a purely unilateral congenital superior oblique palsy was made, developed signs of a palsy in the fellow eye after surgery was done. A review of all diagnostic tests used in discovering the presence of a masked bilateral superior oblique palsy is given. The usefulness of the occlusion-test, which is often forgotten, is illustrated.
authors.affiliation: Department of Ophthalmology, University Hospital of Antwerp, Edegem, Belgium.
authors.forename: P A
authors.initials: PA
authors.lastname: Evens
authors.forename: D
authors.initials: D
authors.lastname: Godts
authors.forename: I
authors.initials: I
authors.lastname: De Veuster
authors.forename: M J
authors.initials: MJ
authors.lastname: Tassignon
mesh_terms: D000328:Adult; D004172:Diplopia / Q000209:etiology; D005260:Female; D006801:Humans; D009886:Ophthalmoplegia / Q000150:complications / Q000151:congenital* / Q000175:diagnosis* / Q000601:surgery; D013285:Strabismus / Q000209:etiology