Extended wear ophthalmic lens

An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability be...

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Hauptverfasser: RIFFLE JUDY SMITH, WINTERTON LYNN COOK, NICOLSON PAUL CLEMENT, SWEENEY DEBORAH, TERRY, JR. WILSON LEONARD, BARON RICHARD CARLTON, PAPASPILIOTOPOULOS ERIC, CHABRECEK PETER, LAYCOCK BRONWYN GLENICE, LOHMANN DIETER, HO ARTHUR, SCHINDHELM KLAUS, MEIJS GORDON FRANCIS, VOGT JURGEN, COURT JOHN, DOMSCHKE ANGELIKA, LIU QIN, HOPKEN JENS, GRIESSER HANS JORGE
Format: Patent
Sprache:eng
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Zusammenfassung:An ophthalmic lens suited for extended-wear periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.