Polymerizable absorbers of UV and high energy visible light
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsDonald E. Riederer, Patricia Martin, Shivkumar Mahadevan, Dawn D. Wright, John R. Buch, Jessica Cannon
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Abstract
Described are polymerizable high energy light absorbing compounds. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices. Such devices exhibit a number of desirable properties, including favorable rates of pervaporation.
Claims20
A contact lens that is a free radical reaction product of a reactive mixture comprising:
- one or more monomers suitable for making the contact lens;
- a high energy visible (HEV) light absorbing compound;
- and
- a polyamide internal wetting agent in an amount of up to eleven weight percent,
- wherein the contact lens transmits from 0 percent to 70 percent of light having a wavelength range of 400 to 409 nm, and wherein the contact lens exhibits a pervaporation rate of less than 0.47 uL/min*cm2 when measured at a relative humidity of about 0 percent.
A silicone hydrogel contact lens that is a reaction product of a reactive mixture comprising:
- a polymerizable high energy light absorbing compound;
- one or more monomers suitable for making the silicone hydrogel contact lens;
- and a polyamide internal wetting agent in an amount of up to eleven weight percent, wherein the silicone hydrogel contact lens has a contact angle of about 70° or less, a water content of at least 25 percent, and an oxygen permeability of at least 80 barrers, wherein the silicone hydrogel contact lens is substantially photostable, and wherein the silicone hydrogel contact lens exhibits a pervaporation rate of less than 0.47 uL/min*cm2 when measured at a relative humidity of about 0 percent.
Dependencies are inferred from the claim text.