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KMID : 1159320130150040417
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Korean Journal of Vision Science
2013 Volume.15 No. 4 p.417 ~ p.425
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Development of new optical functional material of high oxygen permeability contact lens
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Sung A-Young
Kim Tae-Hun
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Abstract
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Purpose: This study evaluated the physical and optical characteristics of hydrophilic contact lens polymerized with addition of trimethylsilyl methacrylate and titanium silicon oxide in the basic hydrogel contact lens material, and in particular, this study investigated the utility of TMSMA and TiSiO4 nanoparticles as a contact lens material for ophthalmologic devices.
Methods: In this study TMSMA and TiSiO4 nanoparticles were used as additives. 2-hydroxyethyl methacrylate, methyl methacrylate, n-vinyl pyrrolidone and a cross-linker EGDMA were copolymerized in the presence of AIBN as an initiator. We measured physical properties such as water content, refractive index, oxygen permeability, spectral transmittance of produced contact lenses.
Results: The hydrogel contact lens material produced using trimethylsilyl methacrylate satisfied the basic characteristics required for contact lenses and also showed an increase in oxygen permeability. The physical properties measurements of the produced contact lenses showed that the added titanium silicon oxide nanoparticles did not show significant effect on the basic physical properties, but the materials have UV-blocking property.
Conclusions: Based on the results of this study, contact lens material containing TMSMA and TiSiO4 is expected to be able to be used usefully as a material for high oxygen permeability and UV-block hydrogel contact lens.
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KEYWORD
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Trimethylsilyl methacrylate, Titanium silicon oxide, Oxygen permeability, UV-block
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