Copolymer for use in corneal bandages
A copolymer for use in corneal bandages comprises of units -(A)- and -(B)- in which the units A are derived from aminoalkyl (alkyl)acrylates, such as 2-(diethylamino)ethyl methacrylate (DEAEMA), 2-(diethylamino)ethyl acrylate (DEAEA), 2-(dimethylamino)ethyl methacrylate (DMAEMA) or 2-(dimethylamino)ethyl acrylate (DMAEA) and the units B are derived from aryloxy, alkoxy or hydroxyalkyl (alkyl)acrylates, such as hydroxyethylmethacrylate (HEMA), hydroxypropylmethacrylate (HPMA), hydroxylbutylmethacrylate (HBMA), hydroxyethylacrylate (HEA), hydroxylpropylacrylate (HPA), hydroxylbutylacrylate (HBA) and (alkyl)acrylic acids, such as methacrylic acid (MAA).; The copolymer has an affinity for corneal cells such that it can be used as a substrate for the growth of corneal cells, and so is suitable for use in a corneal bandage, especially in the form of a contact lens in which at least the cornea contacting surface is composed of the copolymer.
BRADLEY MARK [GB]; TOURNIAIRE GUILHEM [GB]; LIBERSKI ALBERT
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