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Japanese

Astigmatism due to Misplaced Cylinder Axis in the Spectacle Lens Sukeyuki Oshima 1 1Department of Ophthalmology, Tokyo Medical and Dental University pp.1063-1065
Published Date 1975/9/15
DOI https://doi.org/10.11477/mf.1410205355
  • Abstract
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A false position of the cylinder axis in a corrective lens creates a new astigmatism, the axis of which does not coincide with the axis of the cylinder lens nor the original astigma-tism of the eye.

In the present paper a simple formula was derived with some approximation from the Eu-ler's theorem as follows : dC=0.035A dθ, where A is the cylinder powr of a corrective lens in dptr, dθ is the disagreement expressed in deg-rees of arc between the axes of the cylinder lens and astigmatism of the eye, and dC is the dioptric amount of the resultant astigma-tism.


Copyright © 1975, 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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