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Japanese

Bio-Hard Contact Lens Part III Sadayoshi Kamiya , Syusaburo Hokkoku 1 , Yasuhiko Onishi 1 , Masakatsu Hasegawa 1 , Shigeo Mitsuya 2 1Meito Sangyo Co. Ltd., Nagoya City 2Nitten Medical Institute, Nagoya City pp.1159-1166
Published Date 1976/10/15
DOI https://doi.org/10.11477/mf.1410205526
  • Abstract
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We developed a new hard contact lens (Bio-Contact Lens) with dextran acetate-MMA graft copolymer. Deacetylation of the contact lens with alcoholic alkali was applied only to its surface, so that the surface of the contact lens was made hydrophilic with the inner part retai-ning hydrophobic nature. This dual feature re-sulted in good durability of the lens while in actual use.

We detected no difference between the new Bio-Contact Lens and the ordinary contact lens as concerns refractive or absorbing light index as well as mechanical strength.


Copyright © 1976, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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