title: Spherical lens decentration errors by Prentice's rule.
abstract: Sources and magnitude of errors in applying Prentice's rule in calculating decentration for spherical lenses were investigated. It was found that spherical aberration can be the only source of error in applying the rule. The overall magnitude of errors in effective prismatic effect is, however, clinically insignificant.
authors.affiliation: Department of Diagnostic Sciences, Hong Kong Polytechnic, Hunghom.
authors.forename: C Y
authors.initials: CY
authors.lastname: Tang
mesh_terms: D005139:Eyeglasses; D006801:Humans; D008433:Mathematics; D009799:Ocular Physiological Phenomena; D055095:Optics and Photonics; D012399:Rotation