title: [Binocular triplopia induced by weak prisms (author's transl)].
abstract: The prescription of weak prisms may induce monocular diplopia or binocular triplopia. The monocular double image is due to internal reflexion at the glass-air interface. The intensity of the secondary image is very weak (0.2% of the primary image). The prismatic deflection of the secondary image is six times the deflection of the primage image.
mesh_terms: D004172:Diplopia / Q000209:etiology; D005139:Eyeglasses / Q000009:adverse effects*; D006801:Humans; D007909:Lenses; D012029:Refraction, Ocular; D013285:Strabismus / Q000628:therapy; D014786:Vision Disorders / Q000209:etiology*
vernacular_title: Binokulare Triplopie asl Nebenwirkung von Prismen.