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How does wearing contact lenses affect my astigmatism?

Astigmatism is an out-of-roundness of the front of your eye. Soft contact lenses, including those made to correct astigmatism, usually do not cause any change in the astigmatism of an eye. Rigid contact lenses may occasionally mold the cornea (the clear front window of the eye) with a resulting change (usually a reduction) in astigmatism, but this molding is not permanent, and the eye returns to its original state if contact lens wear is discontinued. A severe change in astigmatism in adults may signal an underlying corneal disease such as keratoconus. If that happens, you should consult an Eye M.D. for an evaluation of the corneas of your eyes.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.