Results 1 to 10 of about 609,853 (272)

Corneal Spherical Aberration and Corneal Asphericity after Small Incision Lenticule Extraction and Femtosecond Laser-Assisted LASIK [PDF]

open access: yesJournal of Ophthalmology, 2017
Purpose. To investigate corneal spherical aberration and corneal asphericity after small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK). Methods.
Hui Zhang, Yan Wang, Hua Li
doaj   +3 more sources

Personalized aspheric intraocular lens implantation based on corneal spherical aberration: a review [PDF]

open access: yesInternational Journal of Ophthalmology, 2019
With the evolution of cataract surgery from visual rehabilitation to refractive surgery, aspheric intraocular lenses (IOLs) are being increasingly used in the field of ophthalmology.
Wei Du, Wei Lou, Qiang Wu
doaj   +3 more sources

Effect of Spherical Aberration on the Optical Quality after Implantation of Two Different Aspherical Intraocular Lenses [PDF]

open access: yesJournal of Ophthalmology, 2017
Purpose. To compare the effect of spherical aberration on optical quality in eyes with two different aspherical intraocular lenses. Methods. 120 eyes of 60 patients underwent phacoemulsification.
Michael Lasta   +3 more
doaj   +3 more sources

Effect of larger corneal spherical aberration in improving the near visual acuity of eyes implanted with the TECNIS Symfony [PDF]

open access: yesFrontiers in Medicine, 2023
PurposeTo explore the effect of corneal spherical aberration on the visual acuity and visual quality of eyes implanted with the TECNIS Symfony intraocular lens (IOL).MethodsA total of 43 patients with age-related cataract (60 eyes) undergoing ...
Dandan Wang   +8 more
doaj   +2 more sources

Visual quality analysis using the Chinese Catquest-9SF scale following different spherical aberration IOL implantation [PDF]

open access: yesFrontiers in Public Health, 2022
PurposeBased on the Chinese version of the Catquest-9SF scale, the contrast sensitivity meter and wavefront aberrometer were used to evaluate the visual quality of cataract patients implanted with different spherical aberrations IOL.DesignRetrospective ...
Du Wei   +6 more
doaj   +2 more sources

Higher-order aberrations and spherical aberration in various age groups after LASIK and cataract surgery [PDF]

open access: yesBMC Ophthalmology
Objective To evaluate higher order aberrations and spherical aberration in various age groups after corneal and lenticular treatments. Methods Two hundred forty untreated eyes across various age groups and 182 eyes post-corneal or lenticular treatment ...
Robert Edward T. Ang   +5 more
doaj   +2 more sources

Adaptive optical versus spherical aberration corrections for in vivo brain imaging. [PDF]

open access: yesBiomed Opt Express, 2017
Adjusting the objective correction collar is a widely used approach to correct spherical aberrations (SA) in optical microscopy. In this work, we characterized and compared its performance with adaptive optics in the context of in vivo brain imaging with
Turcotte R, Liang Y, Ji N.
europepmc   +2 more sources

General formula for bi-aspheric singlet lens design free of spherical aberration [PDF]

open access: greenApplied Optics, 2018
In this paper, we present a rigorous analytical solution for the bi-aspheric singlet lens design problem. The input of the general formula presented here is the first surface of the singlet lens; this surface must be continuous and such that the rays ...
Rafael G. González- Acuña   +3 more
openalex   +3 more sources

Minimum change in spherical aberration that can be perceived. [PDF]

open access: yesBiomed Opt Express, 2016
It is important to know the visual sensitivity to optical blur from both a basic science perspective and a practical point of view. Of particular interest is the sensitivity to blur induced by spherical aberration because it is being used to increase ...
Manzanera S, Artal P.
europepmc   +2 more sources

Changes in corneal asphericity and spherical aberration after femtosecond laser in situ keratomileusis

open access: diamondDelta Journal of Ophthalmology, 2021
Purpose The aim of this study was to evaluate the changes in corneal asphericity (Q value) and spherical aberration after femtosecond laser in situ keratomileusis using Scheimpflug imaging.
Mohamed El-Kateb
doaj   +2 more sources

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