Results 1 to 10 of about 42,051 (253)
BMC Ophthalmology, 2020 Background China has been undergoing dramatic economic development, accompanied by increased education load on the young children. This study is to investigate the prevalence, type, severity, and associated risk factors of astigmatism in school students ...
Jianyong Wang +7 more
doaj +1 more source
Comparison of corneal irregular astigmatism by the type of corneal regular astigmatism
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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Femtosecond astigmatic keratotomy for postkeratoplasty astigmatism
Saudi Journal of Ophthalmology, 2016 To evaluate the initial outcomes of femtosecond laser arcuate keratotomies (AK) to correct high astigmatism after keratoplasty.This retrospective non-comparative interventional study included 52 consecutive patients (52 eyes) who underwent Intralase-enabled arcuate keratotomies.
Al Sabaani, Nasser +4 more
openaire +2 more sources
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 ...
Ying-Ying Jin +4 more
doaj +1 more source
THE AXIS OF ASTIGMATISM. [PDF]
JAMA: The Journal of the American Medical Association, 1905 Twelve years ago 1 I presented some views on the axis of astigmatism. Those views consisted partly of propositions to be verified or denied by experience, partly of facts as developed in my practice. I set forth the initial proposition that the axis of astigmatism does not occur at haphazard, that there is a regularity in its occurrence in a given eye,
openaire +1 more source
Posterior Corneal Characteristics of Cataract Patients with High Myopia.
PLoS ONE, 2016 PurposeTo evaluate the characteristics of the posterior corneal surface in patients with high myopia before cataract surgery.MethodsWe performed a cross-sectional study at the Eye and ENT Hospital of Fudan University, Shanghai, China. Corneal astigmatism
Qinghe Jing +4 more
doaj +1 more source
BMC Ophthalmology, 2020 Background To elucidate whether eyelid squinting improves near and distance vision in against-the-rule (ATR) and with-the-rule (WTR) simple myopic astigmatism in pseudophakic eyes. Methods A refraction-model eye was mounted on a wavefront analyzer.
Jay Won Rhim +5 more
doaj +1 more source
Journal of Ophthalmology, 2016 The aim of the study was to report postoperative corneal and surgically induced astigmatism (SIA) in patients with preoperative against-the-rule (ATR) astigmatism who underwent superior approach manual small incision cataract surgery (MSICS).
Edmund Arthur +6 more
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