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A refractive error in which the shape of the cornea or eye lens causes light to focus unevenly, potentially blurring or distorting vision.

noun

Reveal word and examples

astigmatism

The student learned how the word astigmatism differs from the word myopia.
Dictionary practice example.
A display entry on astigmatism described uneven focusing of light associated with the shape of an eye's cornea or lens, rather than using the term for any blurred photograph.
From Accuracy in a Technical Display.
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