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toric lens

a lens used to correct astigmatism, having one of its surfaces shaped like part of a torus so that its focal lengths are different in different meridians
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Contemporary definitions for toric lens

a type of contact lens curved to have a different focal length along each axis to correct astigmatism


Properly fitting a toric lens takes more of your eyecare practitioner's time and requires more expertise than regular contacts.

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1954's 21st Century Lexicon
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