title: Calculation of optical imbalances in ophthalmic lenses using a new algorithm based on the local dioptric power matrix formalism.
abstract: We present a new algorithm to calculate the optical imbalances and differential prismatic effects that appear when two eyes look at an object through correcting eyeglasses. These are important magnitudes in ophthalmic optics because large amounts of them will disturb the binocular vision of the spectacle wearer. As a practical application of our algorithm, the distribution of optical imbalances and differential prismatic powers for a pair of progressive addition lenses has been calculated, and we obtain information about the effects of this kind of lens on the binocular vision of the wearer.
authors.affiliation: Department of Optics, Universidad Complutense de Madrid, Facultad de Ciencias Físicas, Spain.  fiopt18@sis.ucm.es
authors.forename: J A
authors.initials: JA
authors.lastname: Gómez-Pedrero
authors.forename: J
authors.initials: J
authors.lastname: Alonso
authors.forename: E
authors.initials: E
authors.lastname: Bernabeu
mesh_terms: D000465:Algorithms; D005139:Eyeglasses; D006801:Humans; D008962:Models, Theoretical; D015348:Vision, Binocular