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US 2014/0211149 A1Published application
Contact lens having peripheral high modulus zones
AssigneeJohnson & Johnson Vision Care, Inc.
InventorJonathan Hansen
Life of this patent
Estimating the term…
Abstract
Soft contact lens having regions of a material forming one or more higher modulus of elasticity zones in the peripheral region of the lenses add stiffness to the contact lenses. This increased stiffness in different zones or regions enable the contact lens to be more easily handled and make it less likely to fold in on itself.
Claims9
An ophthalmic lens comprising:
- an optic zone configured for vision correction, the optic zone being formed from a first material having a first modulus of elasticity;
- a peripheral zone surrounding the optic zone, the peripheral zone being formed from the first material;
- and
- one or more high modulus of elasticity zones incorporated into the peripheral zone, the one or more high modulus of elasticity zones being formed from a second material having a second modulus of elasticity, the second modulus of elasticity being greater than the first modulus of elasticity.
1 more element
A method for fabricating an ophthalmic lens, the method comprising:
- dosing the front curve of a lens mold with a first material to create a region with a first modulus of elasticity in a predetermined pattern;
- adding a second material with a second modulus of elasticity to the front curve of the lens mold and over the first material, the second modulus of elasticity being lower than the first modulus of elasticity;
- and
- mating a back curve of the lens mold to the front curve of the lens mold to form the ophthalmic lens.
1 more element
Dependencies are inferred from the claim text.