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Japanese

Photoretinoscope Koji Yazawa 1 1Dept. of Ophthalmol. Juntendo Univ. pp.847-849
Published Date 1984/8/15
DOI https://doi.org/10.11477/mf.1410209232
  • Abstract
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Photoretinoscope has been used in the screening of children at age one year and a half and proved to be useful for testing and documentation of the state of refraction.

This instrument consists of a standard reflex camera with 135mm telescopic lens and a streak retinoscope attached to the lens front. The lower half of the lens is covered with blue filter in order to create a shadow in the pupil. In myopia, the light reflex from the upper part of the fundus is cut by the filter and the pupil appears dark in the upper part.


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

基本情報

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

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