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Relationship Between Accommodative Convergence and Ages, and the Effect of ES Eye-Drops on AC/A Ratio Hiroshi Ichikawa 1 , Shoji Kashiwagi 1 , Shigeru Kambayashi 1 , Michiko Yachi 1 , Osamu Maki 2 1Department of Ophthalmology, Central Hospital of J.N.R. 2Ofuna Kyosai Hospital pp.379-386
Published Date 1969/3/15
DOI https://doi.org/10.11477/mf.1410204043
  • Abstract
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Accommodative convergence was studied on 297 test subjects with the use of gradient me-thod through test chart of screenoscope. Sixty-two subjects were further studied with another gradient method using Beren's prism bar. These two gradient method yielded means values of 2.67 △/D±2.160 and of 3.37△/D±1.066 respec-tively. There was no detectable tendency in both the AC/A ratio data specific for any age group with the exception that the AC/A ratio decreased with age after the presbiopic age.


Copyright © 1969, 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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