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US 12,481,173 B2Granted
Multifocal contact lens displaying improved vision attributes
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsShivkumar Mahadevan, Dawn D. Wright, Ronald J. Clark, Thomas R. Karkkainen, Derek Nankivil
Life of this patent
Estimating the term…
Abstract
Described are multifocal contact lenses that contain high energy visible (HEV) light absorbing compounds and their use for improving one or more vision attributes.
Claims14
A contact lens that is a free radical reaction product of a reactive mixture comprising:
- one or more polymerizable compounds suitable for making the contact lens;
- a high energy visible (HEV) light absorbing compound;
- and
- a UV absorbing compound comprising a benzophenone, a benzotriazole, a triazine, a substituted acrylonitrile, a salicyclic acid derivative, a benzoic acid derivative, a cinnamic acid derivative, a chalcone derivative, a dypnone derivative, a crotonic acid derivative, or mixtures thereof,
- wherein the contact lens is a multifocal contact lens, wherein the contact lens transmits from 0 percent to 70 percent of light across a wavelength range of 400 to 409 nm, and transmits 45 percent or less of light across a wavelength range of 280 to 399 nm.
2 more elements
A method for improving a vision attribute in a presbyopic contact lens wearer, the method comprising:
- providing the presbyopic contact lens wearer with a multifocal contact lens that is a free radical reaction product of a reactive mixture comprising:
- one or more polymerizable compounds suitable for making the contact lens;
- and
- a high energy visible (HEV) light absorbing compound;
- and
- a UV absorbing compound comprising a benzophenone, a benzotriazole, a triazine, a substituted acrylonitrile, a salicyclic acid derivative, a benzoic acid derivative, a cinnamic acid derivative, a chalcone derivative, a dypnone derivative, a crotonic acid derivative, or mixtures thereof,
- wherein the vision attribute is selected from one or more of quality of vision, clarity of vision, glare reduction, reduction of squinting, and chromatic contrast, wherein the contact lens transmits from 0 percent to 70 percent of light across a wavelength range of 400 to 409 nm, and transmits 45 percent or less of light across a wavelength range of 280 to 399 nm.
4 more elements
Dependencies are inferred from the claim text.