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Japanese

A simple method for measuring the Modulation Transfer Function of the human visual system Tetsuo Kawara 1 , Hajime Obazawa 1 1Department of Ophthalmology, Schoolof Medicine, Tokai University pp.1505-1509
Published Date 1979/12/15
DOI https://doi.org/10.11477/mf.1410208000
  • Abstract
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A new method was developed for simply measur-ing the modulation transfer function (MTF) in clinical ophthalmology. A sinusoidal grating was used as the test pattern, in which the modulation (contrast) varies logarithmically in vertical direc-tion, being lowest (0.000769) at the top and highest (0.769) at the bottom. The subject was asked to indicate the boundary portion where he could barely detect the grating. The physical modulation of this boundary shows the modulation threshold of the subject. The MTF curve was obtained with using 7 test plates that were different in spatial frequency.


Copyright © 1979, 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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