Results 211 to 220 of about 10,344 (260)

New multifocal intraocular lens design

Journal of Cataract and Refractive Surgery, 1990
The first clinical experience with a new diffractive multifocal intraocular lens implanted in 55 eyes of 53 patients is reported. Excluding four patients with preoperative senile macular degeneration, the best corrected visual acuity was 20/40 or better and the near vision without any add to the best distance correction was J2 or better in all cases ...
T E, Hansen, L, Corydon, S, Krag, K, Thim   +3 more
openaire   +2 more sources

Refractive lens exchange with a multifocal intraocular lens

Current Opinion in Ophthalmology, 2003
Refractive lens exchange with a multifocal intraocular lens is becoming a more popular method of refractive surgery in the presbyopic patient. The limitations of keratorefractive surgery have led to a resurgence of lens exchange surgery for patients with prescriptions outside the limits of corneal refractive procedures, in addition to patients with ...
Richard S, Hoffman, I Howard, Fine, Mark, Packer   +2 more
openaire   +2 more sources

Intraocular Lens Power Calculations for Multifocal Intraocular Lenses

American Journal of Ophthalmology, 1992
We performed calculations for anterior and posterior chamber intraocular lenses, determining the necessary power for emmetropia and 3 diopters of myopia for various axial lengths and corneal powers. Our results demonstrate that to achieve an effective add of 3.00 diopters at the spectacle plane (reading distance of 33 cm), the fabricated add (labeled ...
J T, Holladay, K J, Hoffer
openaire   +2 more sources

Additional multifocal sulcus-based intraocular lens: Alternative to multifocal intraocular lens in the capsular bag

Journal of Cataract and Refractive Surgery, 2013
To compare the visual outcomes of additional multifocal intraocular lenses (IOLs) for sulcus fixation with those of standard multifocal IOLs in the capsular bag.Department of Ophthalmology, Rudolf-Virchow-Klinikum Glauchau, Glauchau, Germany.Prospective controlled clinical trial.Eyes had phacoemulsification and implantation of a monofocal IOL in the ...
Jens, Schrecker, Sandra, Kroeber, Timo, Eppig, Achim, Langenbucher   +3 more
openaire   +2 more sources

Mini-monovision versus multifocal intraocular lens implantation

Journal of Cataract and Refractive Surgery, 2015
To compare the effect of monovision correction and multifocal intraocular lens (IOL) implantation on patient satisfaction, spectacle dependence, visual acuity, and dysphotopsia in cataract patients.University Hospital of Alexandroupolis, Democritus University of Thrace, Alexandroupolis, Greece.Prospective randomized trial.Patients with a diagnosis of ...
Georgios, Labiris, Athanassios, Giarmoukakis, Maria, Patsiamanidi, Zois, Papadopoulos, Vassilios P, Kozobolis   +4 more
openaire   +2 more sources

Interpreting multifocal intraocular lens modulation transfer functions

Journal of Cataract and Refractive Surgery, 1993
The optical performance of new multifocal intraocular lens designs is frequently assessed using the modulation transfer function (MTF). We discuss the relationship between the MTF and clinical measures of human visual function, such as threshold visual acuity and contrast sensitivity.
A, Lang, V, Portney
openaire   +2 more sources

Refractive outcomes after multifocal intraocular lens exchange

Journal of Cataract and Refractive Surgery, 2017
To evaluate the refractive outcomes after multifocal intraocular lens (IOL) exchange.Cullen Eye Institute, Baylor College of Medicine, Houston, Texas, USA.Retrospective case series.Patients had multifocal IOL explantation followed by IOL implantation.
Eric J, Kim, Ahmar, Sajjad, Ildamaris, Montes de Oca, Douglas D, Koch, Li, Wang, Mitchell P, Weikert, Zaina N, Al-Mohtaseb   +6 more
openaire   +2 more sources

Refractive Lens Exchange With an Array Multifocal Intraocular Lens

Journal of Refractive Surgery, 2002
ABSTRACT PURPOSE: To prospectively evaluate safety, efficacy, predictability, stability, complications, and patient satisfaction after refractive lens exchange (clear lens extraction) followed by posterior chamber implantation of a multifocal intraocular lens (IOL).
H Burkhard, Dick, Susanne, Gross, Mana, Tehrani, Dieter, Eisenmann, Norbert, Pfeiffer   +4 more
openaire   +2 more sources

Refractive lens exchange with the Array multifocal intraocular lens

Journal of Cataract and Refractive Surgery, 2002
To study the safety and efficacy of refractive lens exchange as a refractive surgery modality in the presbyopic population.Oregon Eye Institute, Eugene, Oregon, USA.This retrospective review of patient charts included patient selection, preoperative evaluation, management of astigmatism, surgical technique, postoperative visual outcome, and ...
Mark, Packer, I Howard, Fine, Richard S, Hoffman   +2 more
openaire   +2 more sources

Diffractive multifocal intraocular lens image quality

Applied Optics, 1992
The diffractive multifocal intraocular lens is implanted in the eye to replace a cataractous crystalline lens. Axially separated images from two diffraction orders provide near and distance vision. Overall image quality is affected by both the quality of the in-focus component and the energy distribution between images. Modulation transfer function and
openaire   +2 more sources