Meaning Of The Word Astigmatism

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What's the definition of Astigmatism? Find Astigmatism meanings, definitions and more at the Real Dictionary online.

Astigmatism Meaning

Astigmatism Definition
Astigmatism Definition

What's The Definition Of Astigmatism?

astigmatism
uncountable noun: If someone has astigmatism, the front of their eye has a slightly irregular shape, so they cannot see properly.

astigmatism in American English
an irregularity in the curvature of a lens, including the lens of the eye, so that light rays from an object do not meet in a single focal point, resulting in an indistinct or distorted image
noun: a refractive error of the eye in which parallel rays of light from an external source do not converge on a single focal point on the retina

astigmatism in British English
noun: a defect of a lens resulting in the formation of distorted images; caused by the curvature of the lens being different in different planes

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