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US 12,534,623 B2Granted
Contact lens with improved tear film optical quality
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsJohn R. Buch, Jie Xu, Patricia Martin, Shivkumar Mahadevan, Dawn D. Wright
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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 providing wearers with favorable optical quality.
Claims12
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, in a population of wearers, wearers of the contact lens exhibit a mean Modulation Transfer Function (MTF) cutoff that is more than 5 percent greater than wearers of a control lens that transmits at least 90 percent of light across the wavelength range of 400 to 409 nm.
3 more elements
Dependencies are inferred from the claim text.