METHODS FOR THE PRODUCTION OF TINTED CONTACT LENSES

The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface r...

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Bibliographische Detailangaben
Hauptverfasser:	SPAULDING, TERRY L, HERRIN, KEITH B
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONTACT LENSES OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention provides a method for producing tinted contact lenses in which diffusion of monomer into the colorant is aided by heating of the molds. The invention provides a method, and lenses produced by that method, that reduces the residual, unbound polymer on the lens surface and lens surface roughness. L'invention concerne un procédé permettant de produire des lentilles de contact teintées. Dans ce procédé, les moules sont chauffés afin de faciliter la diffusion du monomère dans le colorant. L'invention concerne également un procédé qui permet de réduit le nombre de restes détachés de polymère sur la surface de la lentille et diminue la rugosité de la surface de la lentille ainsi que des lentilles obtenues au moyen de ce procédé