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Is there more than one way of writing the eyeglass prescription for astigmatism?

April 26, 2017astigmatism eyeglass prescription writing

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Is there more than one way of writing the eyeglass prescription for astigmatism?

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Yes, there are two ways of writing a prescription for astigmatism. Some prescriptions are written in (-) cylinder and some are written in (+) cylinder. These prescriptions are equal even though they may not appear so.