Definition of Astigmatic

1. Adjective. Of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images.

Antonyms: Anastigmatic
Derivative terms: Astigmatism, Astigmatism, Astigmia, Astigmia

Definition of Astigmatic

1. a. Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses.

Definition of Astigmatic

1. Adjective. suffering from astigmatism ¹

¹ Source:

Definition of Astigmatic

1. [n -S]

Medical Definition of Astigmatic

1. Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses. Source: Websters Dictionary (01 Mar 1998)

Astigmatic Pictures

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Lexicographical Neighbors of Astigmatic

asthma attack
asthma attacks
asthma crystals
asthmatic bronchitis
astigmatic (current term)
astigmatic dial
astigmatic lens
astigmatism against the rule
astigmatism of oblique pencils
astigmatism with the rule

Literary usage of Astigmatic

Below you will find example usage of this term as found in modern and/or classical literature:

1. Annals of Ophthalmology (1917)
"But the occasional use of the astigmatic dial, after some years of reliance upon the cross cylinder, the astigmatic dial being used for some time merely as ..."

2. The Principles and Methods of Geometrical Optics: Especially as Applied to by James Powell Cocke Southall (1910)
"The astigmatic Difference of the bundle of refracted rays is the piece of the chief refracted ... I mage- Points of the astigmatic bundle of rays; that is, ..."

3. Transactions of the American Ophthalmological Society Annual Meeting by American Ophthalmological Society (1893)
"The general idea therefore about the retinal images in astigmatic eyes is not always ... To form an idea as to the mode of vision of astigmatic eyes, ..."

4. A Handbook of ophthalmic science and practice by Henry Edward Juler (1884)
"A familiar example of an astigmatic surface is the bowl of ... In surfaces which are regularly astigmatic—which the bowl of a spoon is not—the various ..."

5. Hygiene of the Eye by William Campbell Posey (1918)
"If an astigmatic person close one eye and gaze fixedly at a so-called ... astigmatic persons usually attribute their poor vision to near-sightedness. ..."

6. Mirrors, Prisms and Lenses: A Text-book of Geometrical Optics by James Powell Cocke Southall (1918)
"The astigmatic Image-Surfaces.—Thus, the effect of astigmatism is that the rays of a narrow oblique bundle, instead of being brought to a focus at a single ..."

7. Manual of Mental and Physical Tests: A Book of Directions Compiled with by Guy Montrose Whipple (1914)
"... astigmatic chart (Pig. 36).2 PRELIMINARIES.—Place the chart on the wall, and seat 8 as in the previous test. Be sure that S'a head is held squarely ..."

8. Jena Glass and Its Scientific and Industrial Applications: And Its by Heinrich Hovestadt (1902)
"A large astigmatic difference may sometimes destroy the resemblance of the image to the original.1 If, in the first test object mentioned above, ..."

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