title: Zernike radial slope polynomials for wavefront reconstruction and refraction.
abstract: Ophthalmic wavefront sensors typically measure wavefront slope, from which wavefront phase is reconstructed. We show that ophthalmic prescriptions (in power-vector format) can be obtained directly from slope measurements without wavefront reconstruction. This is achieved by fitting the measurement data with a new set of orthonormal basis functions called Zernike radial slope polynomials. Coefficients of this expansion can be used to specify the ophthalmic power vector using explicit formulas derived by a variety of methods. Zernike coefficients for wavefront error can be recovered from the coefficients of radial slope polynomials, thereby offering an alternative way to perform wavefront reconstruction.
authors.affiliation: 1School of Optometry, Indiana University, Bloomington, Indiana 47405, USA. jnam@indiana.edu
authors.forename: Jayoung
authors.initials: J
authors.lastname: Nam
authors.forename: Larry N
authors.initials: LN
authors.lastname: Thibos
authors.forename: D Robert
authors.initials: DR
authors.lastname: Iskander