Patent ID: 8623400

Claim:
A drug-carrying contact lens comprising: a contact lens containing at least one amphiphatic hybrid nanocarrier carrying drug molecules, wherein said amphiphatic hybrid nanocarrier is an amphiphatic organic-inorganic chitosan-silica hybrid nanocarrier, and wherein said amphiphatic hybrid nanocarriers and said drug molecules carried thereby are distributed inside said contact lens or on a surface of said contact lens; and a polymeric material, wherein said polymeric material is mixed with said amphiphatic hybrid nanocarriers and said drug molecules to form a mixture solution, and wherein said mixture solution is sprayed onto said surface of said contact lens to form a film, and wherein said polymeric material contains PHEMA ((poly 2-Hydroxy ethylmethacrylate)) and PMAA (poly(methacrylate acid)) by a ratio of 100:0.5-5.