Results 11 to 20 of about 13,094 (205)

Exploring the Impact of Refractive and Ocular Residual Astigmatism on Stereopsis After Photorefractive Keratectomy in Patients With Myopic Astigmatism. [PDF]

J Ophthalmol
Background To investigate the impact of refractive and ocular residual astigmatism (ORA) on stereopsis after photorefractive keratectomy (PRK) for the correction of myopic astigmatism. Methods This prospective observational study was conducted on patients who underwent PRK for the treatment of myopia and myopic astigmatism using a Schwind Amaris 1050RS
Fayaz F, Pourazizi M, Nabovati P, Peyman A, Noorshargh P.   +4 more
europepmc   +2 more sources

Estimation of surgically induced astigmatism after small-incision cataract surgery done by junior residents

Indian Journal of Ophthalmology, 2023
Purpose: To estimate the postoperative astigmatism after small-incision cataract surgery (SICS) done by junior residents at the end of 1 and 3 months. Methods: This observational longitudinal study was conducted at the Department of Ophthalmology of a ...
Uttkarsha D Thakre, Archana S Nikose, Aseera Momin   +2 more
doaj   +1 more source

Accuracy of biometry using automated and manual keratometry for intraocular lens power calculation

Taiwan Journal of Ophthalmology, 2018
INTRODUCTION: A comparison of precision of intraocular implant power calculation by computing keratometry values by two different methods, namely, the automated and manual keratometry (MK), was done.
Lubna Khan, Babita Sharma, Harshal Gupta, Rimpi Rana   +3 more
doaj   +1 more source

Error induced by the estimation of the corneal power and the effective lens position with a rotationally asymmetric refractive multifocal intraocular lens [PDF]

International Journal of Ophthalmology, 2015
AIM:To evaluate the prediction error in intraocular lens (IOL) power calculation for a rotationally asymmetric refractive multifocal IOL and the impact on this error of the optimization of the keratometric estimation of the corneal power and the ...
David P. Piñero, Vicente J. Camps, María L. Ramón, Verónica Mateo, Rafael J. Pérez-Cambrodí   +4 more
doaj   +1 more source

The variability of corneal and anterior segment parameters in keratoconus [PDF]

, 2016
Purpose: To analyse, describe and test diverse corneal and anterior segment parameters in normal and keratoconic eyes to better understand the geometry of the keratoconic cornea. Method: 44 eyes from 44 keratoconic patients and 44 eyes from 44 healthy
Cardona Torradeflot, Genís, Gispets Parcerisas, Joan, Lupón Bas, Núria, Mas Aixalà, Enric   +3 more
core   +1 more source

Corneal topography by keratometry [PDF]

British Journal of Ophthalmology, 2000
To investigate the ability of a telecentric keratometer to describe the asphericity and curvature of convex ellipsoidal surfaces and human corneas.22 conicoidal convex surfaces and 30 human corneas were examined by conventional keratometry. Additional keratometric measurements were made when the surface was tilted in the horizontal plane relative to ...
W A, Douthwaite, W T, Evardson
openaire   +2 more sources

Repeatability of manual and portable handheld automated keratometric measurements in pediatric population

Journal of Clinical Ophthalmology and Research, 2018
Background: The cornea is not only responsible for the majority of the refraction of the eye, but is also readily accessible for measurement and modification.
Kunal Kaushik, Amit Maitreya, Anuradha Raj   +2 more
doaj   +1 more source

Accelerated versus Standard Corneal Cross-linking for Progressive Keratoconus in Syria

Journal of Ophthalmic & Vision Research, 2021
Purpose: To compare the outcomes of accelerated versus standard corneal cross-linking for the treatment of progressive keratoconus. Methods: In this retrospective comparative study, 63 eyes of 40 patients with progressive keratoconus were divided into ...
Abdelrahman M Salman, Taym R Darwish, Yusra H Haddad, Rafea H Shabaan, Mohammad Z Askar   +4 more
doaj   +1 more source

Correlation between keratometry and corneal incision before and after phaco surgery [PDF]

Folia Medica, 2021
Introduction: Cataract is a common cause of vision loss and blindness in humans. After surgical management of cataract, all efforts should be focused on reducing postoperative astigmatism thus providing an excellent vision to patients.Aim: To determine ...
Akbar Derakhshan, Shahram Bamdad, Hosssein Kheiri, Masoud Yasemi   +3 more
doaj   +3 more sources

Refractive change following pseudophakic vitrectomy: a retrospective review [PDF]

, 2008
Background To assess the occurrence and magnitude of refractive change in pseudophakic eyes undergoing 20 gauge pars plana vitrectomy without scleral buckling and to investigate possible aetiological factors.
Anthony Hildreth, CY Hu, David HW Steel, James Ng, JB Randleman, Jean-Pierre Danjoux, JR McEwan, JW Jeoung, L Zheng, M Shioya, O Cekic, O Findl, P Brazitikos, RV Campo, S Cisiecki, Sinead Byrne, T Eckert, T Oshika, Y Suzuki, YR Sharma   +19 more
core   +5 more sources