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Astigmatism   Listen
noun
Astigmatism  n.  (Med. & Opt.) 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. Note: The term is applied especially to the defect causing images of lines having a certain direction to be indistinct, or imperfectly seen, while those of lines transverse to the former are distinct, or clearly seen.






Collaborative International Dictionary of English 0.48








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"Astigmatism" Quotes from Famous Books



... Philadelphia, to consult an oculist. Some of my dear brethren may think this an unusual step, but I should not desert them without cause. They may think, perhaps, that I am making much ado about nothing and could be treated just as well in Harrisburg. To such let me explain that I am suffering from astigmatism. It is not so much that I cannot see, but that I sees things which I know are not there—a defect in sight which I feel needs the most expert attention. Sunday-school at half-past nine; divine service at eleven. ...
— Humorous Ghost Stories • Dorothy Scarborough

... Accommodation, Astigmatism, Aberration and Entoptic Phenomena, etc.—in fact, the entire book contains so much that is new, practical and necessary that no refractionist can afford to be ...
— Watch and Clock Escapements • Anonymous



Words linked to "Astigmatism" :   astigmatic, ametropia, optics, status, astigmia, ophthalmology, condition, keratectasia, stigmatism, keratoconus



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