Polymeric articles comprising oxygen permeability enhancing particles
OwnerCharles W. Scales, Gregory A. Hill +2inventors
InventorsCharles W. Scales, Gregory A. Hill, John B. Enns, Eric R. George
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Abstract
The present invention relates to a composition comprising a hydrogel polymer having less than 100% haze, and distributed therein an oxygen enhancing effective amount of oxygen permeable particles having an oxygen permeability of at least about 100 barrer, average particle size less than about 5000 nm.
Claims55
A composition comprising a hydrogel polymer having distributed therein an oxygen enhancing effective amount of oxygen permeable particles having an oxygen permeability of at least about 100 barrer and average particle size less than about 5000 nm.
A composition comprising a hydrogel polymer having distributed therein oxygen permeable particles with an average particle size less than about 5000 nm and in an amount sufficient to increase the oxygen permeability of the hydrogel polymer by at least about 10 barrers.
A contact lens comprising a hydrogel polymer having distributed in a region outside the optic zone of said contact lens an oxygen enhancing effective amount of oxygen permeable particles having an oxygen permeability of at least about 100 barrer and average particle size of between about 200 nm and 100 microns.
Dependencies are inferred from the claim text.