title: Simplified rational representation of dioptric power.
authors.affiliation: Department of Optometry, Rand Afrikaans University, Johannesburg, South Africa.
authors.forename: W F
authors.initials: WF
authors.lastname: Harris
mesh_terms: D001251:Astigmatism / Q000628:therapy; D006801:Humans; D008433:Mathematics; D055095:Optics and Photonics