Lens having an optically controlled peripheral portion and a method for designing and manufacturing the lens

A lens for controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens comprising:

• a central portion having at least one optical zone that provides optical control over light rays passing through the central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm, and wherein the peripheral portion extends a radial distance from a boundary where the periphery of the central portion meets the peripheral portion to a periphery of the peripheral portion of about 3.5 mm to about 4.0 mm;
• a peripheral portion having at least one optical zone that provides optical control over light rays passing through the peripheral portion, the peripheral portion having a power profile that optically controls a location at which a peripheral vision image is focused relative to a retina of an eye, wherein the power profile of the peripheral portion is defined by a mathematical function that is continuous at the boundary where the periphery of the central portion meets the peripheral portion and that is not differentiable in a first derivative at the boundary, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters.

A method for providing a lens to be worn on a person's eye that prevents or inhibits myopia by preventing or inhibiting eye growth, the method comprising:

• selecting a power profile for a peripheral portion of a lens to be designed, the power profile of the peripheral portion optically controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens having a central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm, and wherein the peripheral portion extends a radial distance from a boundary where the periphery of the central portion meets the peripheral portion to a periphery of the peripheral portion of about 3.5 mm to about 4.0 mm;
• and
• producing a design of a lens having the central portion and the peripheral portion, the peripheral portion having the selected power profile, wherein the power profile of the peripheral portion is defined by a mathematical function that is discontinuous at the boundary where the periphery of the central portion meets the peripheral portion such that a first derivative of the function is not obtainable, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters.

A method for providing a lens to be worn on a person's eye that prevents or inhibits myopia by preventing or inhibiting eye growth, the method comprising:

• selecting a power profile for a peripheral portion of a lens to be designed, the power profile of the peripheral portion optically controlling a location at which a peripheral vision image is focused relative to a retina of an eye, the lens having a central portion, the central portion having a power profile that optically controls a location at which a center vision image is focused relative to a retina of an eye, wherein the central portion extends a radial distance from a center of the lens outwardly toward a periphery of the central portion that is between about 3.5 millimeters (mm) and about 4.0 mm, and wherein the peripheral portion extends a radial distance from a boundary where the periphery of the central portion meets the peripheral portion to a periphery of the peripheral portion of about 3.5 mm to about 4.0 mm;
• and
• producing a design of a lens having the central portion and the peripheral portion, the peripheral portion having the selected power profile, wherein the power profile of the peripheral portion is defined by a mathematical function that is continuous at the boundary where the periphery of the central portion meets the peripheral portion and that is not differentiable in a first derivative at the boundary, and wherein the optical power provided by the power profile of the central portion at the boundary and the optical power provided by the power profile of the peripheral portion at the boundary differ by no more than about 8.0 Diopters.