Results 161 to 170 of about 196,061 (206)

Multifocal intraocular lenses

Current Opinion in Ophthalmology, 2005
Multifocal intraocular lenses (IOLs) are growing in popularity among patients and surgeons, and opened the way to refractive lens exchange. Still they are not used routinely in cataract surgery, for reasons probably connected to the frequently observed reduction in contrast sensitivity.
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Contrast sensitivity in multifocal intraocular lenses

Journal of Cataract and Refractive Surgery, 1993
Contrast sensitivity was measured in two groups of 20 patients each implanted with refractive and diffractive multifocal intraocular lenses and in two control groups of 20 patients each--the first group implanted with a monofocal IOL and the second phakic subjects.
G, Ravalico, F, Baccara, G, Rinaldi
openaire   +2 more sources

Visual and optical performance with hybrid multifocal intraocular lenses

Australasian journal of optometry, The, 2010
During the past years, the wish to become independent of spectacles has been growing among cataract and presbyopic patients due to many factors, such as the increase in near visual demands, the aesthetic need for a spectacle-free image and ageing of ...
Robert Montés-Micó, Alejandro Cervino, José Vicente Garcia-Marques   +2 more
exaly   +2 more sources

Effect of astigmatism on multifocal intraocular lenses

Journal of Cataract and Refractive Surgery, 1999
To study the effect of astigmatism on multifocal intraocular lens (MIOL) function.Laser Laboratory, Department of Electronics, Electrotechnics and Informatics, University of Trieste, Italy.Using an experimental optical system, this study compared the division of a laser beam in the focal spots of 1 monofocal IOL (Pharmacia 722A), 1 bifocal IOL ...
RAVALICO, GIUSEPPE, PARENTIN F, BACCARA F.   +2 more
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Optical performance of multifocal intraocular lenses

Journal of Cataract and Refractive Surgery, 1990
The optical performance of one monofocal and five multifocal lenses was evaluated in the laboratory and photographically. The laboratory testing included determination of the modulation transfer function (MTF), through focus response (TFR), resolution efficiency, and Strehl ratio of each lens.
J T, Holladay, H, Van Dijk, A, Lang, V, Portney, T R, Willis, R, Sun, H C, Oksman   +6 more
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Multifocal intraocular lenses in the setting of glaucoma

Current Opinion in Ophthalmology, 2007
The purpose of this review is to collate evidence and make recommendations regarding the use of multifocal intraocular lenses in patients with glaucoma.Multifocal intraocular implants have been in use since the 1980s. Several studies have been done comparing their advantages and disadvantages compared with conventional monofocal intraocular implants ...
B Vineeth, Kumar, Russell P, Phillips, Somdutt, Prasad   +2 more
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Optimizing outcomes of multifocal intraocular lenses

Current Opinion in Ophthalmology, 2014
To update the readers on recent research for further optimizing outcomes and improving the patient satisfaction with multifocal intraocular lenses (IOLs).Recent studies provide few novel approaches on surgical interventions to improve the postoperative outcomes.
Jeffrey W, Liu, Weldon W, Haw
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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
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Visual outcomes with multifocal intraocular lenses

Current Opinion in Ophthalmology, 2000
Multifocal intraocular lenses (IOLs) are increasingly becoming a part of the armamentarium of cataract and refractive surgeons. Reports show that most multifocal IOLs provide excellent visual outcomes. In one major study of a zonal progressive, refractive, multifocal design, more than 80% of patients were able to see 20/40 or better at distance and J3 ...
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Multifocal and Accommodating Intraocular Lenses

2020
The loss of accommodation that accompanies pediatric cataract extraction presents several unique challenges not encountered in the management of presbyopia typical in adult cataract surgery. However, many adult techniques and technologies are useful to consider in the pediatric age group. Any implantation of intraocular lenses, regardless of design, is
Basak Can Ermerak, William Johnson, Erin Stahl   +2 more
openaire   +1 more source