Definition of astigmatism
1 : a defect of an optical system (such as a lens) causing rays from a point to fail to meet in a focal point resulting in a blurred and imperfect image
2 : a defect of vision due to astigmatism of the refractive system of the eye and especially to corneal irregularity
3 : distorted understanding suggestive of the blurred vision of an astigmatic person
Recent Examples of astigmatism from the Web
Breaking: Easter Bunny able to afford glasses to correct astigmatism, thanks to continued coverage under Obamacare.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astigmatism'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of astigmatism
ASTIGMATISM Defined for English Language Learners
Definition of astigmatism for English Language Learners
medical : a problem with the eye that prevents a person from seeing clearly
Medical Definition of astigmatism
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