title: Changes in back radius of soft contact lenses when flexed.
abstract: Mathematical statements are made for the various hypotheses describing the change in radius of curvature of the back surface of a flexible contact lens as it flexes. These hypotheses may now be tested for validity in predicting both optical and physiological behavior of real contact lenses in situ.
mesh_terms: D003263:Contact Lenses, Hydrophilic; D008433:Mathematics