Patent ID: 9039172
Filing Date: 2015-05-26
Classification: G02C

Abstract:
1. 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 about 0.2 diopters; and wherein the rate of power change over the central optical zone is a smoothly varying function; a peripheral optical zone having a power profile that provides an amount of negative spherical aberration between an inner semi-diameter of about 2 millimeters (mm) and an outer semi-diameter of about 3 mm, wherein the difference between the amount of negative spherical aberration provided at the inner semi-diameter of the peripheral optical zone and the amount of negative spherical aberration provided at the outer semi-diameter of the peripheral optical zone ranges from a minimum absolute value of about 0.65 diopters and a maximum absolute value of about 1.25 diopters; 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.