Patent ID: 8240850

Claim:
A method for making an ophthalmic lens with a configuration to correct a visual acuity of a user comprising: determining a shape of a base optical corrective element according to at least one of the following parameters: a desired power of the ophthalmic lens; a desired resolution or modulation transfer function; a desired extent of correction of the spherical aberrations of said ophthalmic lens; a desired extent of correction of the spherical aberrations of the cornea of the user; a desired extent of correction of the chromatic aberrations of said ophthalmic lens; a desired extent of correction of the chromatic aberrations of a cornea of the user; and a desired extent of correction of high order aberrations; determining a profile of a phase element structure comprising the steps of defining a desired depth of focus of said ophthalmic lens; calculating a desired phase distribution to be created at the entrance pupil of the lens from the desired depth of focus, said step of calculating the phase distribution further comprising the steps of: selecting a known phase distribution; and performing an iterative calculation to obtain said desired depth of focus; finding the phase which minimizes the differences between the effective phase distribution and the desired phase distribution; converting the phase which minimizes the difference between the effective phase distribution and the desired phase distribution into geometrical data to define a profile of the phase element structure; and juxtaposing the phase element structure and the base optical corrective element.