Results 1 to 10 of about 404,226 (116)

Effects of low-concentration atropine eye drops on the optical quality of the eyes in myopic children [PDF]

open access: yesIndian Journal of Ophthalmology, 2022
Purpose: The present study was performed to compare the optical quality of the eyes of myopic children before and after treatment with atropine eye drops of different concentrations. Methods: In the study population of 71 patients (131 eyes), 34 patients
Weiran Li, Yiting Cao, Jibo Zhou
doaj   +2 more sources

Optical-Quality Analysis and Defocus-Curve Simulations of a Novel Hydrophobic Trifocal Intraocular Lens [PDF]

open access: yesClinical Ophthalmology, 2023
Grzegorz Łabuz, Weijia Yan, Ramin Khoramnia, Gerd U Auffarth The David J. Apple Center for Vision Research, Department of Ophthalmology, University Hospital Heidelberg, Heidelberg, 69120, GermanyCorrespondence: Grzegorz Łabuz ...
Łabuz G   +3 more
doaj   +2 more sources

Refractive outcomes and optical quality of PRESBYOND laser-blended vision for presbyopia correction [PDF]

open access: yesInternational Journal of Ophthalmology, 2022
AIM: To investigate the one-year refractive outcomes and optical quality following PRESBYOND laser-blended vision (LBV). METHODS: This retrospective study included 20 patients who underwent PRESBYOND treatment between Jan 2019 and Aug 2020.
Dan Fu   +5 more
doaj   +2 more sources

Near Vision Tasks and Optical Quality of the Eye [PDF]

open access: yesJournal of Ophthalmic & Vision Research, 2021
Purpose: To study the effect of near-vision reading task on optical quality of the eye when performed on a computer monitor and on printed paper, and to identify which of the two results in greater changes.
Jessica Rafaela Moreira Gomes   +1 more
doaj   +2 more sources

Analysis of methods for synthesis of a boron-doped lithium niobate charge used for growing single crystals

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
Known methods of a boron doped lithium niobate charge synthesis were analyzed. Such a charge is applied for the growth by Czochralski of single crystals with high optical quality.
Sofia M. Masloboeva
doaj   +1 more source

Repeatability of in-vitro optical quality measurements of intraocular lenses with a deflectometry technique effect of the toricity [PDF]

open access: yesInternational Journal of Ophthalmology, 2018
AIM: To evaluate the repeatability of an optical device for measuring the Zernike coefficients of toric intraocular lenses (IOLs) and assess whether its toricity has any impact in its repeatability.
Teresa Ferrer-Blasco   +5 more
doaj   +1 more source

DFT codebook-based hybrid precoding for multiuser mmWave massive MIMO systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2020
In millimeter wave (mmWave) massive MIMO (multiple-input multiple-output) systems, it is difficult to apply conventional digital precoding techniques due to hardware constraints.
Yu Huang   +3 more
doaj   +1 more source

Prevalence and causes of low vision and blindness in an urban population: The Chennai Glaucoma Study

open access: yesIndian Journal of Ophthalmology, 2014
Aim: To evaluate the prevalence and causes of low vision and blindness in an urban south Indian population. Settings and Design: Population-based cross-sectional study.
Lingam Vijaya   +4 more
doaj   +1 more source

Structural and optical characteristics determined by the sputtering deposition conditions of oxide thin films

open access: yesBeilstein Journal of Nanotechnology, 2021
The influence of film thickness on the structural and optical properties of silicon dioxide (SiO2) and zinc oxide (ZnO) thin films deposited by radio frequency magnetron sputtering on quartz substrates was investigated.
Petronela Prepelita   +2 more
doaj   +1 more source

Increased choroidal thickness in patient with high-altitude retinopathy

open access: yesIndian Journal of Ophthalmology, 2014
We report a case of high-altitude retinopathy with increased choroidal thickness detected by spectral-domain optical coherence tomography (SD-OCT). A 36-year-old Japanese man developed an acute vision decrease in his left eye after he had trekked at an ...
Kyoko Hirukawa-Nakayama   +4 more
doaj   +1 more source

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