title: Letter to the editor: Vergence facility with stereoscopic and nonstereoscopic targets.
authors.affiliation: New York, NY.
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Cooper
mesh_terms: D003290:Convergence, Ocular / Q000502:physiology*; D003867:Depth Perception / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D012029:Refraction, Ocular / Q000502:physiology*