Results 1 to 10 of about 38,555 (245)

Predicting Residual Astigmatism in Cataract Surgery

open access: yesVision (Switzerland), 2022
The purpose of this review is to evaluate the prediction of postoperative residual astigmatism and to determine the best prediction method for astigmatism correction.
Atsushi Kawahara
exaly   +4 more sources

A review of astigmatism and its possible genesis

open access: yesAustralasian journal of optometry, The, 2007
Astigmatism is a refractive condition encountered commonly in clinical practice. This review presents an overview of research that has been carried out examining various aspects of this refractive error.
Scott A Read   +2 more
exaly   +2 more sources

Distribution of posterior corneal astigmatism according to axis orientation of anterior corneal astigmatism. [PDF]

open access: yesPLoS ONE, 2015
To investigate the distribution of posterior corneal astigmatism in eyes with with-the-rule (WTR) and against-the-rule (ATR) anterior corneal astigmatism.We retrospectively examined six hundred eight eyes of 608 healthy subjects (275 men and 333 women ...
Toshiyuki Miyake   +2 more
doaj   +2 more sources

Anterior and Posterior Corneal Astigmatism after Refractive Lenticule Extraction for Myopic Astigmatism [PDF]

open access: yesJournal of Ophthalmology, 2015
Purpose. To assess the amount and the axis orientation of anterior and posterior corneal astigmatism after refractive lenticule extraction (ReLEx) for myopic astigmatism. Methods. We retrospectively examined 53 eyes of 53 consecutive patients (mean age ±
Kazutaka Kamiya   +4 more
doaj   +2 more sources

The visual and functional impacts of astigmatism and its clinical management

open access: yesOphthalmic and Physiological Optics, 2014
Purpose\ud \ud To provide a comprehensive overview of research examining the impact of astigmatism on clinical and functional measures of vision, the short and longer term adaptations to astigmatism that occur in the visual system, and the currently ...
Scott A Read   +2 more
exaly   +2 more sources

Influence of Astigmatism Type on Myopia Progression Among Children Wearing Defocus Incorporated Multiple Segments (DIMS) Spectacle Lenses [PDF]

open access: yesClinical Ophthalmology
Jenna M Hoogendoorn,1 Rakhee Shah,2 Laurentius J Van Rijn,3 Natalia Vlasak4 1Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; 2Optometry & Visual Sciences, City St George’s, University of London, London, EC1V 0HB, UK; 3Department of ...
Hoogendoorn JM   +3 more
doaj   +2 more sources

Studying the contribution of posterior corneal astigmatism to total corneal astigmatism

open access: yesJournal of the Egyptian Ophthalmological Society, 2015
Settings The Faculty of Medicine, Alexandria University, Egypt. Purpose The aim of this work was to study the contribution of posterior corneal astigmatism to total corneal astigmatism.
Hany Ahmed Helaly
doaj   +2 more sources

Astigmatism and vision:should all astigmatism always be corrected? [PDF]

open access: yesBritish Journal of Ophthalmology, 2014
As technology and medical devices improve, there is much interest in when and how astigmatism should be corrected with refractive surgery. Astigmatism can be corrected by most forms of refractive surgery, such as using excimer lasers algorithms to ablate
Wolffsohn, James S.   +2 more
core   +3 more sources

Astigmatism induced by conventional spherical ablation after PRK and LASIK in myopia with astigmatism < 1.00 D

open access: yesClinical Ophthalmology, 2012
Steven M Christiansen,1 Mark D Mifflin,1 Jason N Edmonds,1 Rachel G Simpson,2 Majid Moshirfar11John A Moran Eye Center, University of Utah, Salt Lake City, UT, 2The University of Arizona College of Medicine, Phoenix, AZ, USABackground: The purpose of ...
Christiansen SM   +4 more
doaj   +1 more source

Effects of Lens-Induced Astigmatism at Near and Far Distances [PDF]

open access: yes, 2023
Purpose: To investigate and compare the degradation of visual acuity (VA) in myopic presbyopes due to lens-induced astigmatism at near and at far distance. Patients and Methods: Fourteen corrected myopic presbyopes were recruited.
Vlasak, Natalia   +5 more
core   +2 more sources

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