Patent ID: 8480229
Filing Date: 2013-07-09
Classification: G02C

Abstract:
1. A method for stabilizing contact lenses comprising: a) providing a lens design with a initial set of stabilization zone parameters, b) applying a merit function to the lens design based on balancing moments of momentum, and c) creating a contact lens design with improved stabilization based on the application of said merit function to the lens design with a initial set of stabilization zone parameters; wherein said merit function is selected from the group consisting of and wherein; W R and W C are weighting factors and can take values between 0 and 1; X Range , Y Range and θ Range are lens performance variables in stability in horizontal direction vertical direction and rotation of the completed lens design; X REF , Y REF and θ REF are lens REF and REF are lens performance variables in stability in horizontal direction, vertical direction and rotation of the initial lens design; W X , W Y , W S and W θ are weighting factors. Rot Cent and Stab are lens performance variables in rotation centration and stability of the completed lens design; R REF , C REF and S REF are lens performance variables in rotation centration and stability of the initial lens design, and R REF , C REF and S REF are weighting factors.