Antimicrobial polymer for use in ophthalmic implants

An ophthalmic implant comprising an antimicrobial polymer comprising:

• at least one antimicrobial monomer is a quaternary ammonium salt-based monomer selected from 1-[12-(methacryloyloxy) dodecyl]pyridinium bromide (MDPB), methacryloxylethyl cetyl dimethyl ammonium chloride (DMAE-CB), 2-methacryloxyethyl dodecyl methyl ammonium bromide (MAE-DB), 2-methacryloxyethyl hexadecyl methyl ammonium bromide (MAE-HB) or bis(2-methacryloxyethyl) dimethyl ammonium bromide (IDMA-1);
• and
• monomers selected from hydrophobic acrylic monomers or hydrophilic acrylic monomers,
• wherein the hydrophobic acrylic monomers are selected from monomers of ethyl acrylate, ethyl methacrylate, 2,2,2-trifluoroethyl methacrylate, cross linked with ethylene glycol dimethacrylate, which form a copolymer of ethyl acrylate, ethyl methacrylate, 2,2,2-trifluoroethyl methacrylate, cross linked with ethylene glycol dimethacrylate;
• or monomers of phenylethyl methacrylate and n-butyl acrylate, fluoroalkyl methacrylate, which form a cross linked copolymer of phenylethyl methacrylate and n-butyl acrylate, fluoroalkyl methacrylate;
• and
• wherein the hydrophilic acrylic monomers are selected from monomers of hydroxyethyl methacrylate and methyl methacrylate, which form a copolymer of hydroxyethyl methacrylate and methyl methacrylate;
• monomers of 2-hydroxyethylmethacrylate and 2-ethoxyethylmethacrylate, which form a copolymer of 2-hydroxyethylmethacrylate and 2-ethoxyethylmethacrylate;
• and monomers of 2-hydroxyethylmethacrylate and methyl methacrylate, which form a copolymer of 2-hydroxyethylmethacrylate and methyl methacrylate.