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. Platinum nanoparticles were added to a mixture of HEMA (2-hydroxyethyl methacrylate), NVP (N-vinyl pyrrolidone) and MMA (methyl methacrylate) in a mould at various concentrations. The resulting mixture was copolymerized by heating at 70 o C for 40 min, 80 o C for 40 min, and 100 o C for 40 min, respectively. The physical properties of contact lens were then measured. The oxyge ntransmissibility of 9 ~ 15 × 10 -9 cm/s mL O 2 /mL × mmHg, water content of 34.22 ~ 35.52%, refractive index of 1.432 ~ 1.435, visibl etransmittance of 88.3 ~ 91.2% and tensile strength of 0.141 ~ 0.152 kgf were obtained. The addition of platinum nanoparticles to the polymer allowed the contact lens to have various colors without artificial coloring agents. The polymer materials satisfied the physical properties required to produce contact lenses, making the material suitable to be applied as a functional material for ophthalm ologicalpurposes. Keywords: Contact lens, Platinum nanoparticle, Coloring material

Synthesis of Polymer Materials Containing Platinum Nanoparticles and Their Application for Contact Lenses