astigmatic

Definitions

  • WordNet 3.6
    • adj astigmatic 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
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Webster's Revised Unabridged Dictionary
    • a Astigmatic (Med. & Opt) Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses.
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Century Dictionary and Cyclopedia
    • astigmatic Pertaining to or exhibiting astigmatism.
    • astigmatic In botany, without a stigma: applied to the flowers of gymnosperms from an ecological point of view. See Stigmaticæ.
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Usage

In literature:

B. is moderately myopic and very astigmatic in the left eye; extremely myopic in the right.
"Essays on Life, Art and Science" by Samuel Butler
And, after a while, if you look her way long enough you get a sort of mental astigmatism.
"Tish, The Chronicle of Her Escapades and Excursions" by Mary Roberts Rinehart
When a child holds his head to one side constantly on looking at objects, astigmatism, an error of eyesight, is usually indicated.
"The Mother and Her Child" by William S. Sadler
If you don't just see things as they see them, you're troubled with astigmatism.
"The Trail of '98" by Robert W. Service
You must see some good oculist about your astigmatism, my dear.
"A Book of Burlesques" by H. L. Mencken
Conclusion: the lens is astigmatic, or the objective is not adjusted to be co-axial with the eyepiece.
"On Laboratory Arts" by Richard Threlfall
To such let me explain that I am suffering from astigmatism.
"Humorous Ghost Stories" by Dorothy Scarborough
The curvature of the eyeball in the astigmatic eye is greater in one meridian than in the opposite.
"The Home Medical Library, Volume II (of VI)" by Various
It is a large scarlet bow with vivid green and white spots the size of halfpenny pieces, arranged astigmatically.
"Punch or the London Charivari, Vol. 147, July 8, 1914" by Various
Mix, and the cold astigmatism of Aunt Mirabelle, he'd be hanged if he quit in the first round.
"Rope" by Holworthy Hall
Look, I've had astigmatism since I was a kid!
"The Enormous Room" by Horace Leonard Gold
I might be astigmatic.
"Marion Darche" by F. Marion Crawford
Almost all eyes are more or less astigmatic, but persons only become aware of it when it is excessive.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various
It is just the same with astigmatism.
"Schweigger on Squint" by C. Schweigger
Outside of this point astigmatism may be reckoned as absent and marked 0 in the report.
"Degeneracy" by Eugene S. Talbot
Daresay it's the husband's astigmatic point of view.
"Linda Lee, Incorporated" by Louis Joseph Vance
He was shortsighted, but had no astigmatism; tests of the field of vision showed no abnormality.
"Vocational Psychology: Its Problems and Methods" by Harry L. Hollingworth
Irregular astigmatism is commonly demonstrated in the following manner.
"Curiosities of Light and Sight" by Shelford Bidwell
They are astigmatism and curvature of field.
"The Barnet Book of Photography" by Various
I have astigmatism in one eye, and have therefore to wear special spectacles.
"The Girls of St. Wode's" by L. T. Meade
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In news:

This includes the significant number of highly astigmatic patients who benefit from the crisp vision afforded by GP spherical and bitoric lenses.
Astigmatism - part 1.
GP lenses have an important advantage over soft lenses in that the tear layer between the lens and cornea (lacrimal lens) has astigmatic power.
Therefore, all of the astigmatic correction has to be in the lens itself.
Custom soft bifocals with special needs, including astigmatism, can be ordered directly from a manufacturer consultant, our best friend for success.
But because John has astigmatism and other medical problems.
She also has an astigmatism, a dome or more football-shaped eye rather than more rounded like a baseball.
Retinal Physician Article Submission Guidelines-Prescribing for Astigmatism and Presbyopia.
Since the introduction of soft hydrogel lenses by Griffin Laboratories in the 1960s, claims have existed that soft lenses mask astigmatism.
The company claimed that its soft spherical lens could mask anywhere from ­0.50D to ­2.00D of astigmatism.
A 25-year-old Caucasian male with a history of moderate myopia and low astigmatism presented to the contact lens clinic specifically for a Duette fitting.
You might have a slight astigmatism, which makes it harder for your eyes to adapt to darkness.
If visual acuity is less than expected, an SCOR may help determine if uncorrected astigmatism is the culprit.
Soft Torics are the Lenses of First Choice for Astigmatism.
When Correcting Astigmatism, Vote Yes to GP Lenses.
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In science:

Also the cylinder helps in reducing the field dependent component of the astigmatism.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
This causes a variation of the astigmatism introduced on these fields of ±5% considering equation 3.13.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
The residual low order aberrations we expect are mainly defocus and coma, plus a little contribution of spherical and residual astigmatism.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
The Zernike coefficients express the deformation needed in the thin shell to null the residual low order aberrations (astigmatism, coma and spherical).
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
The static shape applied to the thin shell, expressed as Zernike surface coefficients, resulted to be: 335nm of astigmatism, 263nm of coma and 10nm of spherical aberration.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
Formulas for the coma and astigmatism of wedge prisms used in converging light.
Design of the wavefront sensor unit of ARGOS, the LBT laser guide star system
This “astigmatism” can be cured by invoking supersymmetry,190 as illustrated in Fig. 14(b).
Present and Future Aspects of CP Violation
Another advantage of these gratings is that the astigmatism of an off-axis spectrograph can be compensated for by shaping the wavefronts of the interfering beams.
Classical Spectroscopy
In addition, because the grating is an off-axis mirror, it introduces astigmatism unless an auxiliary mirror is introduced.
Classical Spectroscopy
The magnitude of the astigmatism increases with the length of the rulings, and the entrance slit must be aligned precisely with the ruling direction to avoid degrading the spectrograph focus.
Classical Spectroscopy
In addition, there is some time varying as well as fixed astigmatism.
Optical Tests of a 2.5-m diameter Liquid Mirror: Behavior under External Perturbations and Scattered Light Measurements
Interferometric measurements of the auxiliary flat mirrors used in the testing setup show astigmatism of the same order of magnitude as we measure on the wavefronts obtained from the interferograms of the 2.5-m mirror.
Optical Tests of a 2.5-m diameter Liquid Mirror: Behavior under External Perturbations and Scattered Light Measurements
Computer simulations indicate that an auxiliary quarter wave plate introduces astigmatism, as confirmed by experiments.
Optical Tests of a 2.5-m diameter Liquid Mirror: Behavior under External Perturbations and Scattered Light Measurements
On the other hand, we cannot totally exclude that some astigmatism having amplitude of about l/10 is present on the mirror.
Optical Tests of a 2.5-m diameter Liquid Mirror: Behavior under External Perturbations and Scattered Light Measurements
Here we show that the second moments are equally useful for estimating the second-order aberrations, defocus and astigmatism.
Donut: measuring optical aberrations from a single extra-focal image
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