Patent ID: 8672472

Claim:
A method of providing a multi-zone contact lens for an eye, comprising: identifying an eye of a person for which progression of myopia is to be addressed, and for that eye: providing a multi-zone contact lens for the eye which has a central optical zone with a central optical zone refractive power and a peripheral optical zone with a peripheral optical zone refractive power disposed radially from said central optical zone; selecting said central zone refractive power to provide clear central vision to the eye; selecting a peripheral optical zone refractive power that is greater than the central optical zone refractive power, the peripheral optical zone refractive power being selected to ensure that off-axis rays entering the eye through said peripheral optical zone are brought to focus at points on or anterior to the peripheral retina of the eye; and selecting the size of the central optical zone to be within approximately 1 mm of a normal pupil diameter for the eye.