Glossary of Eye and Vision Terms

Astigmatism Definition

Astigmatism Definition

Astigmatism (uh-STIG-muh-tiz-um) is a common and generally treatable vision issue when the cornea (clear part in the front of the eye) is not completely round. It is curved more like an egg, rather than round like a basketball. Astigmatism causes blurred distance and near vision.

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