Optimization of contact lenses to reduce aberrations and methods for their design

Abstract From the Canadian patent

A method is provided for designing soft contact lenses in which an optical performance of an , aspheric front surface is optimized for lens centration using computer modelling using an eye , model and a ray trace program. The method includes setting a plurality of configurations of the , lens-eye model representing different pupil sizes and lens decentrations; generating a merit , function representing the optical performance of the lens-eye model at a plurality of fields for each , of the plurality of configurations; and changing the parameters of the front surface during an , optimization routine to minimize the merit function thereby improving optical , performance of the lens-eye …