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Japanese

Newly Developed Spherical Projection Perimeter Tsutomu Kojo 1 1Tokyo Kosei Nenkin Hosp. pp.1331-1337
Published Date 1966/10/15
DOI https://doi.org/10.11477/mf.1410203529
  • Abstract
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A newly developed spherical projection perimeter with built-in recording apparatus is described. It has following properties :

Separate lamps are provided for background and target illumination. The contrast between the target and background luminosity △I/I can thus be kept in a steady relationship. When in need, the contrast between and the absolute values of background and target luminosity can be changed independently at will. The perimeter can thus be used not only for examination of constant-contrast visual field, but of visual field under low or dark background illumination also.


Copyright © 1966, 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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