title: Temporary diplopia upon hyoscine-N-butyl bromide administration: case report.
abstract: Hyoscine-N-butyl bromide is a widely used antispasmodic belonging to the belladonna alkaloid class of semisynthetic quaternary ammonium compounds. These compounds exert a spasmolytic action on the smooth muscles of the bile-gastrointestinal tract, genitourinary tract, salivary glands (xerostomia), and also on the visual apparatus - in particular, the irido-ciliary complex. As a consequence, they provoke collateral effects such as mydriasis and accommodation disturbances. We report the case of a 23-year-old woman who complained of not only "dry mouth" but also "cloudy vision" and a "diplopia", both of temporary type, 2 hours after oral administration of hyoscine-N-butyl bromide.
authors.affiliation: Department of Sense Organs, University of Rome "La Sapienza", Rome, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Migliorini
authors.forename: R
authors.initials: R
authors.lastname: Malagola
authors.forename: M
authors.initials: M
authors.lastname: Mafrici
authors.forename: R
authors.initials: R
authors.lastname: Spena
authors.forename: L
authors.initials: L
authors.lastname: Arrico
keywords: accommodation disorders; fusion alteration; hyoscine-N-butyl bromide; temporary diplopia; vertical strabismus