title: Measurement of the longitudinal spherical aberration of soft contact lenses.
abstract: An apparatus has been developed to measure the longitudinal spherical aberration of soft contact lenses in a configuration that closely simulates the in vivo situation. This was achieved by a special mounting method: the soft lens is held by a transparent elastic membrane against the first surface of a zero-power substrate lens system having the same anterior radius as the mean human cornea. Measurements of the longitudinal spherical aberration of some typical soft contact lenses are given.
authors.affiliation: SOFLENS Research and Development, Bausch & Lomb, Inc., 1400 North Goodman Street, Rochester, New York 14602, USA.
authors.forename: G T
authors.initials: GT
authors.lastname: Bauer
authors.forename: H B
authors.initials: HB
authors.lastname: Lechner