Patent ID: 7731365

Claim:
A contact lens fitting method, comprising the steps of: a.) obtaining baseline measurements of low order aberration data; low order manifest subjective data; high order spherical aberrations resulting from the crystalline lens; corneal data; and visual requirements or an individual; b.) determining a difference between the lower order aberrations and the lower order manifest subjective refraction obtained in carrying out the baseline measurements in step a.); c.) fitting at least a first trial aspheric lens on an eye of the individual, wherein the first trial lens is selected based on the low order aberrations and the crystalline lens spherical aberrations less a corneal Qv; d.) carrying out a contrast sensitivity function measurement of the first trial lens; e.) obtaining a second contrast sensitivity function measurement that takes into account the difference between the low order aberration data and the low order manifest subjective data; f.) calculating the difference between the first and second contrast sensitivity function measurements; and g.) selecting an aspheric lens for the individual based on the following equation: (low order manifest subjective refraction+crystalline lens spherical aberrations)— Qv+CSA wherein CSA is a cortical spherical aberration and using the selection to prescribe contact lenses that correct a patient's vision during wear.