Results 61 to 70 of about 4,948 (216)

Comparison of postoperative visual performance between bifocal and trifocal intraocular Lens based on randomized controlled trails: a meta-analysis

open access: yesBMC Ophthalmology, 2019
Background To compare the clinical performance of bifocal and trifocal intraocular lenses (IOLs) in cataract surgery, a meta-analysis on randomized controlled trials was conducted.
Shanshan Jin   +13 more
doaj   +1 more source

The Homburg‐Adelaide toric IOL nomogram: How to predict corneal power vectors from preoperative IOLMaster 700 keratometry and total corneal power in toric IOL implantation

open access: yesActa Ophthalmologica, Volume 103, Issue 1, Page e19-e30, February 2025.
Abstract Purpose The purpose of this study is to compare the reconstructed corneal power (RCP) by working backwards from the post‐implantation spectacle refraction and toric intraocular lens power and to develop the models for mapping preoperative keratometry and total corneal power to RCP.
Achim Langenbucher   +5 more
wiley   +1 more source

Assessment of a New Trifocal Diffractive Corneal Inlay for Presbyopia Correction Using an Adaptive Optics Visual Simulator

open access: yesPhotonics, 2022
In this work, we analyze a proposal of a new intracorneal diffractive lens for presbyopia correction that could allow good, distance, intermediate and near vision. By using an adaptive optics visual simulator, we study the influence of two factors in the
Anabel Martínez-Espert   +4 more
doaj   +1 more source

State Medicaid Programs: A Trifocal Examination of the Controversy Surrounding Expansion [PDF]

open access: yes, 2014
The conversation regarding Medicaid expansion is ever-changing as states grapple with whether to expand their existing programs. Through this now-optional piece of legislation, state governments can choose to extend healthcare coverage via the federal ...
Daly, Meredith
core   +2 more sources

Curved geometric‐phase optical element fabrication using top‐down alignment

open access: yesNanophotonics, Volume 14, Issue 4, Page 523-534, February 2025.
Abstract Advanced optical technologies, such as next‐generation displays and holographic systems, demand high efficiency, lightweight designs, compact dimensions, and compatibility with curved and thin substrates. However, current optical devices for virtual and augmented reality displays, such as surface relief and holographic gratings, face ...
Gayeon Park   +3 more
wiley   +1 more source

Visual Acuity, Quality of Vision, and Patient-Reported Outcomes After Bilateral Implantation with a Trifocal or Extended Depth of Focus Intraocular Lens

open access: yesClinical Ophthalmology, 2021
Dan B Tran,1 Ashley Owyang,1 Jin Hwang,1 Richard Potvin2 1Coastal Vision Medical Group, Orange, CA, USA; 2Science in Vision, Bend, OR, USACorrespondence: Dan B TranCoastal Vision Medical Group, 293 S.
Tran DB, Owyang A, Hwang J, Potvin R
doaj  

Visual Outcomes of a New Hydrophobic Trifocal Intraocular Lens in Cataract Treatment: A Prospective Clinical Study

open access: yesJournal of Ophthalmology, Volume 2025, Issue 1, 2025.
Purpose: To report the visual outcomes following bilateral implantation of a new trifocal intraocular lens (IOL) in patients with age‐related cataracts. Methods: This prospective, noncomparative, multicenter study assessed 126 patients undergoing cataract extraction followed by AT ELANA 841P IOL implantation.
Andrea Janeková   +6 more
wiley   +1 more source

Middle‐aged migrants: Expanding an understanding of lifecourses and linked lives

open access: yesGlobal Networks, Volume 24, Issue 4, October 2024.
Abstract This paper explores a new perspective on middle‐aged migrant women. Midlife has long been presumed to be the most networked stage of life for sedentary populations, but it has not been examined critically in the context of migration. This is an empty space that warrants research attention, because middle‐aged migrants often have lives that are
Aija Lulle
wiley   +1 more source

Halos and multifocal intraocular lenses: origin and interpretation [PDF]

open access: yes, 2014
Preprin
Alba Bueno, Francisco   +2 more
core   +2 more sources

Visual and refractive outcomes after implantation of two models of trifocal intraocular lenses in eyes with previous corneal ablation to treat hyperopia

open access: yesEye and Vision, 2023
Background To assess whether a trifocal intraocular lens (IOL) with neutral spherical aberration (SA) provides better visual and refractive outcomes than a trifocal IOL with negative SA after hyperopic corneal laser ablation.
Fernando Mayordomo-Cerdá   +6 more
doaj   +1 more source

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