ЧТО ОЗНАЧАЕТ СЛОВО ASTIGMATISM
Астигматизм
Оптическая система с астигматизмом - это та, где лучи, распространяющиеся в двух перпендикулярных плоскостях, имеют разные очаги. Если для формирования изображения креста используется оптическая система с астигматизмом, вертикальные и горизонтальные линии будут иметь резкий фокус на двух разных расстояниях. Термин происходит от греческого α- означает «без» и στίγμα, «отметка, пятно, прокол».
Значение слова astigmatism в словаре английский языка
Определение астигматизма в словаре - это дефект объектива, приводящий к образованию искаженных изображений; вызванные кривизной линзы, различной в разных плоскостях. Другим определением астигматизма является дефектное зрение, возникающее из-за дефектной кривизны роговицы или хрусталика глаза.
КНИГИ НА АНГЛИЙСКИЙ ЯЗЫКЕ, ИМЕЮЩЕЕ ОТНОШЕНИЕ К СЛОВУ «ASTIGMATISM»
Поиск случаев использования слова
astigmatism в следующих библиографических источниках. Книги, относящиеся к слову
astigmatism, и краткие выдержки из этих книг для получения представления о контексте использования этого слова в литературе на английский языке.
1
Irregular
Astigmatism: Diagnosis and Treatment
This text is intended to help prevent and reduce the iatrogenic creation of irregular astigmatism, as well as provide effective treatment when postoperative complications do arise.
Ming X. Wang, Tracy Schroeder Swartz,
2008
2
A Complete Surgical Guide for Correcting
Astigmatism: An ...
In addition, this Second Edition covers the management of irregular corneal astigmatism and corneal thinning.
3
Astigmatism: New Insights for the Healthcare Professional: ...
Astigmatism: New Insights for the Healthcare Professional: 2011 Edition is a ScholarlyPaper™ that delivers timely, authoritative, and intensively focused information about Astigmatism in a compact format.
The cornea is usually the cause of clinically significant astigmatism, although the
crystalline lens tends to cause astigmatism of small amounts. Most corneas are
more steeply curved in the vertical meridian than in the horizontal meridian, ...
Theodore Grosvenor, Theodore P. Grosvenor,
2007
5
Optics, Retinoscopy, and Refractometry
Astigmatism Astigmatism, in most cases, is caused by an irregularly shaped
cornea. If there is regular corneal astigmatism, one meridian of the cornea is the
flattest and perpendicular (ie, 90 degrees away) to this is the steepest meridian.
Astigmatism is caused by an irregular curvature of the clear front covering of the
eye, the cornea. A perfectly shaped cornea is spherical, like a baseball, allowing
all light rays to enter the eye and bringing them to focus on the retina.
Marshall Cavendish Corporation,
2007
7
Corneal
astigmatism: etiology, prevention, and management
Intro. to microsurgery for astigmatism discusses anatomy surgical technique for specific situations post-op mgmt.
Richard Charles Troutman, Kurt A. Buzard,
1992
8
Ocular Anatomy and Physiology
In regular astigmatism, the meridians with the greatest and least amount of
curvature (or refractive error) are perpendicular to each other. Instead of light
being focused to a point, two focus lines are created perpendicular to each other
(one ...
9
Clinical Management of Binocular Vision: Heterophoric, ...
In most infants the horizontal meridian typically has the greatest refractive power (
136), resulting in a condition defined as against-the-rule (A-T-R) astigmatism (
137). Infantile astigmatism decreases rapidly over the first 18 months of life, and
by ...
Mitchell Scheiman, Bruce Wick,
2008
10
The Retinoscopy Book: An Introductory Manual for Eye Care ...
EXAMPLE. 3: SIMPLE. MYOPIC. ASTIGMATISM. Place a +3.00 cylinder x 90° in
the slot of ... ASTIGMATISM. Place a +1.50 + 1.50 x 90° in the slots of your
neutralized schematic eye. Begin your retinoscopy by establishing your two
principle ...
НОВОСТИ, В КОТОРЫХ ВСТРЕЧАЕТСЯ ТЕРМИН «ASTIGMATISM»
Здесь показано, как национальная и международная пресса использует термин
astigmatism в контексте приведенных ниже новостных статей.
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Make Vision Health a Priority
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Combat astigmatism with eyewear from Oakville's 3...
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Identification of the first large deletion in the CLDN16 gene in a …
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Evaluation of transethnic fine mapping with population-specific and …
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An Eye on Advanced Cataract Surgery
Toric: This type of lens can correct distance vision and astigmatism, when the eye isn't perfectly round on the front surface or cornea. Patients ... «Ventura County Star, Июн 15»
Lehigh Valley IronPigs' Tommy Joseph excited about move from …
He had never worn them, never mind glasses, but through the recovery process he discovered he had an astigmatism in his right eye. «lehighvalleylive.com, Июн 15»