Patent ID: 8684520

Claim:
A lens for preventing myopia or reducing the progression of myopia, the lens comprising: an optical portion extending outwardly from a lens center to an outer periphery of the optical portion, the optical portion having a central vision region and a peripheral region; and a carrier portion connected to the outer periphery of the optical portion by a blending zone of the carrier portion, the carrier portion extending outwardly from the outer periphery of the optical portion to an outer periphery of the carrier portion, and wherein the lens has a power profile extending outwardly from the lens center that creates on-axis and off-axis myopic defocus to reduce or remove on-axis and off-axis hyperopic defocus created by optics in the eye of a person wearing the lens, the profile creating the on-axis and off-axis myopic defocus by providing an increase in positive (plus) power for light rays passing through the central vision and peripheral regions of the optical portion; and wherein the power profile has a first increase in positive (plus) power that ranges from a minimum first positive (plus) power of about 0.5 diopters to a maximum first positive (plus) power of about 1.5 diopters over a radial distance from the lens center ranging from a first radial distance of about 1.5 mm to a second radial distance of about 3.0 mm, and wherein the power profile has a second minimum increase in positive (plus) power that is equal to the first maximum positive (plus) power at the second radial distance and has a second maximum increase in positive (plus) power that is at least 0.5 diopters greater than the first maximum positive (plus) power at a third radial distance, wherein the third radial distance is at least 0.5 mm greater than the second radial distance.