Results 1 to 10 of about 17,796 (161)
Comparison of corneal irregular astigmatism by the type of corneal regular astigmatism [PDF]
Scientific Reports, 2021 We investigated the relation between corneal regular and irregular astigmatism in normal human eyes. In 951 eyes of 951 patients, corneal irregular astigmatism, such as asymmetry and higher-order irregularity components, was calculated using the Fourier ...
Yuta Ueno +5 more
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Symmetrical femtosecond laser arc incision in correcting corneal astigmatism in cataract patients [PDF]
International Journal of Ophthalmology, 2023 AIM: To evaluate the effect of symmetrical arc incision correcting corneal astigmatism in femtosecond laser-assisted phacoemulsification (FLACS). METHODS: This study enrolled patients with cataract combined with regular corneal astigmatism of >0.75 D ...
Zun-Xia Hu +10 more
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Distribution of posterior corneal astigmatism according to axis orientation of anterior corneal astigmatism. [PDF]
PLoS 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 +4 more sources
Studying the contribution of posterior corneal astigmatism to total corneal astigmatism
Journal 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
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Pterygium‐induced corneal astigmatism [PDF]
Australasian journal of optometry, The, 2001 A significant degree of corneal astigmatism can be induced by the encroachment of a pterygium onto a cornea. The pterygium generally causes with-the-rule corneal astigmatism that is hemimeridional on the side of the pterygium. There is a significant correlation between the extension of the pterygium onto the cornea and the amount of induced astigmatism.
Richard G Lindsay
exaly +3 more sources
Clinical Ophthalmology, 2020 Mohamed Hosny, Alaa Badawy, Lobna Khazbak, Mohamed Anis, Sarah Azzam Ophthalmology, Cairo University, Giza, EgyptCorrespondence: Mohamed HosnyOphthalmology, Cairo University, 84 Shehab Street, Mohandeseen, Giza 12411, EgyptTel +20 1000007675Email ...
Hosny M +4 more
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Surgical approaches to correct corneal astigmatism at time of cataract surgery: a mini-review [PDF]
International Journal of OphthalmologyAmong refractive errors, astigmatism is the most common optical aberration, where refraction changes in different meridians of the eye. It causes blurred vision at any distance and includes corneal, lenticular, and retinal astigmatism.
Xiao-Lei Yin +4 more
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Effect of the posterior corneal surface on total corneal astigmatism in patients with age-related cataract [PDF]
International Journal of Ophthalmology, 2018 AIM: To explore the effect of the posterior astigmatism on total corneal astigmatism and evaluate the error caused by substituting the corneal astigmatism of the simulated keratometriy (simulated K) for the total corneal astigmatism in age-related ...
Hui Song, Xin Tang
exaly +2 more sources
Association of PDGFRA polymorphisms with the risk of corneal astigmatism in a Japanese population [PDF]
Scientific Reports, 2023 Corneal astigmatism is reportedly associated with polymorphisms of the platelet-derived growth factor receptor alpha (PDGFRA) gene region in Asian populations of Chinese, Malay, and Indian ancestry and populations of European ancestry.
Hideharu Fukasaku +5 more
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Diagnostics, 2023 Purpose: To analyse the correspondence between refractive astigmatism and corneal astigmatism in pseudophakic eyes with non-toric intraocular lenses. Setting: Yeouido St. Mary hospital, Seoul, Republic of Korea.
Kyung-Sun Na +3 more
doaj +1 more source