Results 181 to 190 of about 5,555,258 (227)
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Biometry and intraocular lens power calculation
Current Opinion in Ophthalmology, 2008Heightened patient expectations for precise postoperative refractive results have spurred the continued improvements in biometry and intraocular lens calculations. In order to meet these expectations, attention to proper patient selection, accurate keratometry and biometry, and appropriate intraocular lens power formula selection with optimized lens ...
Alexander C, Lee +2 more
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Intraocular lens power calculation for microphthalmos
Journal of Cataract and Refractive Surgery, 1997To evaluate the refractive results and accuracy of intraocular lens (IOL) power calculation formulas in eyes with microphthalmos.Department of Ophthalmology, Showa University Hospital, Tokyo, Japan.The accuracy of IOL power calculated using the SRK, SRK II, S-SRK, SRK/T, Holladay, and Hoffer Q formulas was evaluated in six eyes with axial lengths less ...
M, Inatomi +4 more
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Calculations of Intraocular Lens Power
Archives of Ophthalmology, 1986To the Editor. —In the April 1986 issue of theArchives, Holladay and coworkers 1 present a lucid description of factors affecting the calculation of intraocular lens power and make reasoned recommendations on how results may be improved. Their empirical data, however, require comment.
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The value of a zero power intraocular lens
Journal of Cataract and Refractive Surgery, 1988An intraocular lens with a reversed optic and with haptics angulated forward presses the posterior capsule more posteriorly than other types of lenses. This position is thought to be important even in eyes that do not need intraocular lenses for optical reasons, such as eyes with high axial myopia (because of their increased tendency to postoperative ...
P U, Fechner, J, Kania, S, Kienzle
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Analysis of intraocular lens power calculation
American Intra-Ocular Implant Society Journal, 1985We performed an analysis of ocular biometry and intraocular lens (IOL) power calculation on 100 eyes that had anterior chamber IOL implantation during 1981 and 1982. Various methods of calculating the IOL power were used, including the standard lens power, presurgical basic refraction, Fyodorov's formula, Colenbrander's formula, Binkhorst's formula ...
Y S, Liang +3 more
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Adjustable intraocular lens power technology
Journal of Cataract and Refractive Surgery, 2014We present an overview of the adjustable intraocular lens (IOL) technologies that are available or under development. This includes IOL technologies that can be adjusted using secondary surgical procedures, such as the multicomponent IOL, the mechanically adjustable IOL, and the repeatedly adjustable IOL; IOLs that can be adjusted noninvasively in the ...
Joshua, Ford +2 more
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Intraocular Lens Power Calculations for Multifocal Intraocular Lenses
American Journal of Ophthalmology, 1992We 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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Intraocular Lens Exchange due to Incorrect Lens Power
Ophthalmology, 2007To evaluate patients who had intraocular lens (IOL) exchange for unexpected postoperative refractive errors, determine the sources associated with the errors, and derive an empiric approach to estimating the power for IOL exchange.Retrospective review of interventional case series.Twenty-two eyes that underwent IOL exchange for correcting unexpected ...
George J C, Jin +2 more
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Archives of Ophthalmology, 1988
In Reply. —As our article clearly stated, instances exist where the ophthalmologist would most certainly wish to use all means available to "customize" his results for a particular eye. We hoped that we also made clear that one would most certainly not use a standard lens (be it 20 D or whatever, over the long haul, gives the best emmetropic results ...
A. Sommer, K. Singh
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In Reply. —As our article clearly stated, instances exist where the ophthalmologist would most certainly wish to use all means available to "customize" his results for a particular eye. We hoped that we also made clear that one would most certainly not use a standard lens (be it 20 D or whatever, over the long haul, gives the best emmetropic results ...
A. Sommer, K. Singh
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Intraocular lens power calculation in a posterior chamber phakic intraocular lens implanted eye
International Ophthalmology, 2020To evaluate the effect of Eyecryl posterior chamber phakic intraocular lens (pIOL) on axial length measurement and intraocular lens power calculation.Axial length (AL), keratometry (K), and IOL power calculations were compared at monthly preoperative and postoperative visits (preoperative vs 1-month).
Dilek Yaşa +3 more
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