Contact lens with optimized performance and method of design

A method that optimizes the centration of a contact lens having an optical zone and a peripheral zone surrounding the optical zone, a front surface and a base curve while on eye, the method comprising the steps of:

• inputting ocular surface geometry obtained from at least one of a patient or an idealized geometry by averaging over a given population of patients and initial contact lens geometry for a given contact lens into an analytical model;
• obtaining an initial strain energy state of the contact lens geometry that interacts with the ocular surface geometry;
• fitting the resulting initial strain energy state to a parametrized polynomial function of contact lens geometry, eye geometry, lens mechanical properties and eye mechanical properties;
• altering the geometry of the base curve of the contact lens in the peripheral zone and obtaining a new strain energy state until a balanced stain energy state is achieved by minimizing the difference between the initial and the new strain energy states using an iterative function to solve the parameterized polynomial function;
• and
• fabricating a contact lens which utilizes the minimized strain energy difference.