Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of astigmatism is as below...

Astigmatism :: Astigmatism (n.) A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision..

Astigmatic :: Astigmatic (a.) Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses..

Emmetropia :: Emmetropia (n.) That refractive condition of the eye in which the rays of light are all brought accurately and without undue effort to a focus upon the retina; -- opposed to hypermetropia, myopia, an astigmatism..

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