Patent ID: 8672474

Claim:
A lens for treating Presbyopia comprising: a central optical zone having a power profile that provides an ADD power ranging from a maximum ADD power of between about 0 diopters and about 2.4 diopters and a minimum ADD power of between about 0 diopters and 0.2 diopters; a peripheral optical zone having an inner semi-diameter of about 2 millimeters (mm) and an outer semi-diameter of about 3 mm, the peripheral optical zone having a power profile that provides an amount of negative spherical aberration, a difference between the amount of negative spherical aberration provided by the power profile at the inner semi-diameter and the amount of negative spherical aberration provided by the power profile at the outer semi-diameter ranging from a minimum absolute value of about 0.65 diopters and a maximum absolute value of about 1.25 diopters; and a transition zone interposed between and connected to the central optical zone and the peripheral optical zone, the transition zone providing a transition between the central optical zone and the peripheral optical zone, the transition zone having a power profile that is continuous.