CO OZNACZA SŁOWO ASTIGMATISM
Astygmatyzm
System optyczny z astygmatyzmem jest taki, w którym promienie rozprzestrzeniające się w dwóch prostopadłych płaszczyznach mają różne ogniska. Jeśli w celu utworzenia obrazu krzyża wykorzystuje się system optyczny z astygmatyzmem, pionowe i poziome linie będą ostre, przy dwóch różnych odległościach. Określenie pochodzi od greckiego α- "bez" i στίγμα, "znaku, miejsca, przebicia".
Definicja słowa astigmatism w słowniku
Definicja astygmatyzmu w słowniku jest wadą soczewki powodującą powstawanie zniekształconych obrazów; powodowane przez krzywiznę soczewki, która jest różna w różnych płaszczyznach. Inną definicją astygmatyzmu jest wadliwe widzenie wynikające z wadliwej krzywizny rogówki lub soczewki oka.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «ASTIGMATISM»
Poznaj użycie słowa
astigmatism w następujących pozycjach bibliograficznych Książki powiązane ze słowem
astigmatism oraz krótkie ich fragmenty w celu przedstawienia kontekstu użycia w literaturze.
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 ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «ASTIGMATISM»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
astigmatism w wiadomościach.
Femtosecond lenticule extraction versus LASIK draws SMILE
That translates into a certain level of irregular astigmatism inherent in that procedure.” This lack of precision could produce results that are less ... «ModernMedicine, Lip 15»
Company Shares of Cooper Companies, Inc. (The) Drops by -1.28%
CooperVision is involved in correcting vision problems such as astigmatism, presbyopia and ocular dryness, and provides innovative contact ... «News Watch International, Lip 15»
STAAR Surgical Company Receives Consensus Rating of "Hold …
... hyperopia (far-sightedness) and astigmatism. The Company operates under the brands STAAR, Visian, Collamer, CentraFLOW, AquaPORT, ... «Dakota Financial News, Lip 15»
Make Vision Health a Priority
For children, the most common vision issues are known as refractive errors, such as astigmatism, farsightedness and nearsightedness. «PR Newswire, Lip 15»
Combat astigmatism with eyewear from Oakville's 3...
Astigmatism might sound scary, but if you ask the professionals at Oakville's 3 for 1 Glasses, they'll tell you it's nothing to lose sleep over. «InsideHalton.com, Lip 15»
Identification of the first large deletion in the CLDN16 gene in a …
In patients with CLDN16 mutations, milder visual disturbances such as myopia, astigmatism, hypermetropia, and/or strabismus have been ... «BMC Blogs Network, Lip 15»
Evaluation of transethnic fine mapping with population-specific and …
... eye-related traits such as corneal curvature (CC), central corneal thickness (CCT), corneal astigmatism (CA) and optic disk area (ODA)19, 20, ... «Nature.com, Lip 15»
It's All Greek To Me
Myopia. Hyperopia. Astigmatism. Presbyopia. I have no idea what you're talking about-opia. If you are like millions of other Americans, one of ... «citysuntimes, Cze 15»
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, Cze 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, Cze 15»