astigmatic


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Related to astigmatic: astigmatic keratotomy
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astigmatism
top: normal eye with light focusing on the retina
bottom: astigmatic eye with light focusing in different places on or in front of the retina

a·stig·ma·tism

 (ə-stĭg′mə-tĭz′əm)
n.
A visual defect in which the unequal curvature of one or more refractive surfaces of the eye, usually the cornea, prevents light rays from focusing clearly at one point on the retina, resulting in blurred vision.

[a- + Greek stigma, stigmat-, point (from stizein, stig-, to tattoo; see steig- in Indo-European roots).]

as′tig·mat′ic (ăs′tĭg-măt′ĭk) adj. & n.
as′tig·mat′i·cal·ly adv.

astigmatic

(ˌæstɪɡˈmætɪk)
adj
(Pathology) relating to or affected with astigmatism
n
(Pathology) a person who has astigmatism
[C19: from a-1 + Greek stigmat-, stigma spot, focus; see stigma]
ˌastigˈmatically adv

as•tig•mat•ic

(ˌæs tɪgˈmæt ɪk)

adj.
1. pertaining to, exhibiting, or correcting astigmatism.
2. marked by rigidity or distortion, as in judgment.
[1840–50; a-6 + stigmatic]
as`tig•mat′i•cal•ly, adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.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
anastigmatic, stigmatic - not astigmatic
Translations

astigmatic

[ˌæstɪgˈmætɪk] ADJastigmático

astigmatic

adjastigmatisch
References in classic literature ?
After all, an astigmatic parent, seeing Adolf in a dim light, might be impressed by him.
* Be able to explain to astigmatic patients about the surgical options available (Group 1.2.4)
Marshal, who was the first to describe in 1936 the relations between strabismus surgery and refractive change, reported a change in astigmatism in 60% of the patients [1]; later reports found a weaker association between strabismus surgeries and induced refractive error, with a leading finding of a transient astigmatic change after horizontal recti muscle surgery towards with-the-rule direction [2-7].
Table 2 Show the surgically - induced astigmatic change at 1 and 3 months post-operatively calculated by vector analysis using the Holladay- cravy-Koch-method.
While stars at the center of the field were sharp, those slightly off-axis stretched out into astigmatic streaks.
The company explained to OT that the product is designed to "bring together everything that eye care professionals need for an unprecedented one-day day experience for astigmatic wearers."
In our study, we investigated the effects of MMC on highly myopic patients and in highly astigmatic patients, as these are the main concerns in all surface ablation surgeries.
Table 4: POSTOPERATIVE ACCEPTANCE OF ASTIGMATIC CORRECTION Astigmatism on acceptance Foldable Non Foldable TOTAL of refraction Zero 63 52 115 up to 0.5 31 30 61 0.75-1 37 44 81 1.25-1.5 15 15 30 >1.5 4 9 13 The above table 4 of postoperative acceptance of astigmatic correction was analysed by Graph-pad prism in following manner.
Their choice consists of either wearing the glasses or living with an astigmatic view of the universe.
Others may consider the patient's astigmatic correction to be too low to require a toric lens or suppose that astigmatism can be masked with spherical lenses.
Moreover, astigmatisms are vectors with defined directions and magnitudes, and the quantitative analysis of astigmatic change might have been eliminated important information and might yield inconsistent results without accounting for the polar nature of astigmatism [3].