Results 1 to 10 of about 63,735 (222)

THE AXIS OF ASTIGMATISM. [PDF]

open access: greenJAMA: 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,
J. Herbert Claiborne
openalex   +4 more sources

Astigmatism [PDF]

open access: greenScientific American, 1881
n ...
C. A. Bucklin
openalex   +3 more sources

Astigmatism [PDF]

open access: greenThe American Journal of the Medical Sciences
n ...
F J Bumstead
openalex   +4 more sources

Predicting Residual Astigmatism in Cataract Surgery

open access: yesVision, 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
doaj   +1 more source

Symmetrical femtosecond laser arc incision in correcting corneal astigmatism in cataract patients [PDF]

open access: yesInternational 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
doaj   +1 more source

Correlation between ocular residual astigmatism and anterior corneal astigmatism in children with low and moderate myopia

open access: yesBMC Ophthalmology, 2022
Background To assess the correlation between ocular residual astigmatism and anterior corneal astigmatism in children with low and moderate myopia. Methods Refractive astigmatism was determined by subjective manifest refraction.
Jian Lin   +3 more
doaj   +1 more source

Comparison of Automated Keratometer and Scheimpflug Tomography for Predicting Refractive Astigmatism in Pseudophakic Eyes

open access: yesDiagnostics, 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

Posterior Corneal Characteristics of Cataract Patients with High Myopia. [PDF]

open access: yesPLoS ONE, 2016
PURPOSE:To evaluate the characteristics of the posterior corneal surface in patients with high myopia before cataract surgery. METHODS:We performed a cross-sectional study at the Eye and ENT Hospital of Fudan University, Shanghai, China.
Qinghe Jing   +4 more
doaj   +1 more source

Impact of corneal astigmatism on refractive outcomes after phacoemulsification with implantation of a spherical IOL

open access: yesJournal of Ophthalmology, 2021
Background: To date, particular emphasis is being put to correction of preoperative corneal astigmatism in phacoemulsification, since approximately 30% of the world’s population has astigmatism of at least 0.75D which results in decreased visual acuity ...
N. G. Zavgorodnia, V. Iu. Novikova
doaj   +1 more source

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