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Recent Advances in Spectacle Lenses Kiyoshi Totsuka 1 , Nobuko Nishikawa 1 1Department of Ophthalmology, Kanto Teishin Hospital pp.365-368
Published Date 1967/3/15
DOI https://doi.org/10.11477/mf.1410203613
  • Abstract
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Various topics are presented concerning the commercially available spectacle lenses. There is a definite tendency for the spectacle lenses to assume flatter basic curvature which made it possible to be fitted in bigger spectacle fra-mes and to appear less distorted on external view. This has been due to the less rigid in-terpretation of the center of rotation of the eyeball as defined by Gullstrand in 1901. Other features as coating of the lenses, hardening processes, colored lenses, bifocals, elimination of concentric lines observed by a third person on lateral view and distorted outlook of wea-rer's eye are discussed.


Copyright © 1967, 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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