Abstract: A lens with an optical area to increase a defocus image refractive powers is disclosed. A central optical zone of the lens includes a non-circular optical area, and a defocus area formed on a part thereof other than the optical area. An outer surface of the peripheral optical zone is aspheric, so that the original space of the central optical zone can be effectively used to increase the defocus image area of the retina of eye ball and light passing the peripheral optical zones can create different amounts of peripheral blurring areas in front of different areas of the retina; this defocusing of the images, providing more controlled amount of myopic defocus to the retina, which acts as a putative cue to slow myopic eye growth.

Abstract: A myopia control lens with aspheric surface to create peripheral defocus onto varies regions of a retina is disclosed. This lens includes a central optical zone and varies of asymmetrical peripheral optical zones surrounding the central optical zone. Varies regions of asymmetric periphery optical zones create different amounts of blur surrounding a central area. The outer peripheral surface consists of different regions and different amounts of asymmetrical aspheric, so that light passing the peripheral optical zones can create different amounts of peripheral blurring areas in front of different areas of the retina; this defocusing of the images, providing more controlled amount of myopic blur to the retina, which acts as a putative cue to slow myopic eye growth.