Results 21 to 30 of about 196,061 (206)

Wavefront analysis and modulation transfer function of three multifocal intraocular lenses

open access: yesIndian Journal of Ophthalmology, 2010
Purpose: To evaluate wavefront performance and modulation transfer function (MTF) in the human eye after the implantation of diffractive or refractive multifocal intraocular lenses (IOLs). Materials and Methods: This was a prospective, interventional,
Santhiago Marcony   +5 more
doaj   +3 more sources

Intraocular correction of presbyopia after laser keratorefractive surgery

open access: yesОфтальмохирургия, 2022
Purpose. To present the results of research on modern aspects of intraocular correction of presbyopia after laser keratorefractive surgery. Material and methods.
A.V. Doga   +5 more
doaj   +1 more source

Multifocal spectral diffractive lens [PDF]

open access: yesКомпьютерная оптика, 2018
We present a method for calculating a spectral multifocal diffractive lens that forms a given set of fixed-position foci at multiple operating wavelengths. It is based on minimizing a function represented as a squared absolute value of difference between
Leonid Doskolovich   +2 more
doaj   +1 more source

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

Visual Outcomes After Cataract Surgery:Multifocal Versus Monofocal Intraocular Lenses [PDF]

open access: yes, 2015
PURPOSE: To evaluate visual outcomes, spectacle independence, and quality of life among nonastigmatic and astigmatic patients who received AcrySof IQ ReSTOR toric or nontoric multifocal intraocular lenses (IOLs) (Alcon Laboratories, Fort Worth, TX ...
Vinciguerra, Paolo   +7 more
core   +1 more source

Special Surgical Features When Using Toric and Multifocal Intraocular Lenses

open access: yes, 2023
This chapter refers purely to surgical features when implanting toric or (toric) multifocal intraocular lenses.
Mayer, Wolfgang J., Nuijts, Rudy
core   +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

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