Results 11 to 20 of about 2,882 (160)

Fourier tools for the evaluation of refractive multifocal designs

open access: yesScientific Reports, 2023
This paper presents innovative tools and methodologies for the theoretical assessment of optical properties in refractive multifocal designs. Utilizing lens segmentation techniques and classical Fourier optics, these tools can be of help evaluating ...
Pablo De Gracia
doaj   +1 more source

Development of new methods of selection of multifocal intraocular correction in cataract surgery

open access: yesJournal of Ophthalmology, 2021
Рurpose. Upon obtained information from a questionnaire and trial multifocal contact lenses prior operation, our goal is to present a new methodology to select patients for multifocal intraocular correction with an individual definition of the IOL type.
Alnoelaty ALmasri M. A., V. C. Stebnev
doaj   +1 more source

REHABILITATION OF PATIENTS AFTER IMPLANTATION OF BIFOCAL AND TRIFOCAL INTRAOCULAR LENS

open access: yesОфтальмохирургия, 2018
The article considers the primary factors affecting patients’ rehabilitation after implantation of different multifocal intraocular lens models during cataract surgeries.
E. V. Boiko, D. A. Vinnitskiy
doaj   +1 more source

Multifocal Intraocular Lenses Implantation in Presbyopia Correction. Literature Review

open access: yesActa Biomedica Scientifica, 2019
Reduced dependence on glasses is an increasingly common expectation among those who want to take advantage of new surgical opportunities, especially for patients who lead an active lifestyle.
K. B. Pershin   +4 more
doaj   +1 more source

Comparison of visual performance of multifocal intraocular lenses with same material monofocal intraocular lenses. [PDF]

open access: yesPLoS ONE, 2013
PURPOSE: To compare the visual performance of multifocal intraocular lenses (IOLs) and monofocal IOLs made of the same material. METHODS: The subjects included patients implanted with either Tecnis® monofocal IOLs (ZA9003 or ZCB00) or Tecnis® multifocal ...
Tomofusa Yamauchi   +5 more
doaj   +1 more source

Bifocal and Multifocal Contact Lenses for Presbyopia and Myopia Control

open access: yesJournal of Ophthalmology, 2020
Bifocal and multifocal optical devices are intended to get images into focus from objects placed at different distances from the observer. Spectacles, contact lenses, and intraocular lenses can meet the requirements to provide such a solution.
Laura Remón   +4 more
doaj   +1 more source

A contralateral eye study comparing apodized diffrative and full diffrative lenses: wavefront analysis and distance and near uncorrected visual acuity

open access: yesClinics, 2009
PURPOSE: To evaluate intraindividual visual acuity, wavefront errors and modulation transfer functions in patients implanted with two diffractive multifocal intraocular lenses.
Marcony Rodrigues de Santhiago   +5 more
doaj   +1 more source

Secondary multifocal intraocular lens implantation: A novel management strategy for white cataracts

open access: yesSAGE Open Medical Case Reports, 2018
Objectives: This study was designed to analyse the outcomes of secondary multifocal intraocular lens implantation in eyes with white cataracts. Methods: White cataract patients undergoing secondary multifocal intraocular lens implantation between June ...
Jiawen Ling, Yiyong Qian, Peirong Lu
doaj   +1 more source

CHARACTERISTICS, FUNCTIONAL MODELS AND SIMULATION OF INTRAOCULAR LENSES: A REVIEW

open access: yesAnales (Asociación Física Argentina)
A review of the mathematical models that predict visual quality of intraocular lenses as a function of the optical quality parameters that characterize them, and a review of the methodologies used for the simulation of vision with intraocular lenses are ...
L. F. Calderari   +2 more
doaj   +1 more source

A Rapid and Convenient Procedure to Evaluate Optical Performance of Intraocular Lenses

open access: yesPhotonics, 2014
A new portable lens scanner was developed and tested for measuring focal lengths and relative contrast transfer of mono- and multifocal intraocular lenses (IOLs).
Frank Schaeffel, Hakan Kaymak
doaj   +1 more source

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