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.

© 1979 Optical Society of America

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