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irregular astigmatism

irregular astigmatism in Medicine

irregular astigmatism n.
Astigmatism in which different parts of the same meridian have different degrees of curvature.

The American HeritageĀ® Stedman's Medical Dictionary
Copyright Ā© 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Examples from the Web for irregular astigmatism
Historical Examples
  • This is usually attributed to the presence of an irregular astigmatism situated near the asymmetric meridian.

    Schweigger on Squint C. Schweigger
  • irregular astigmatism is commonly demonstrated in the following manner.

  • But if this appearance is not present then irregular astigmatism cannot be proved.

    Schweigger on Squint C. Schweigger

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