Power profiles in multifocal contact lenses with variable multifocal zone
نویسندگان
چکیده
منابع مشابه
Power Profiles of Commercial Multifocal Soft Contact Lenses
PURPOSE To evaluate the optical power profiles of commercially available soft multifocal contact lenses and compare their optical designs. METHODS The power profiles of 38 types of multifocal contact lenses-three lenses each-were measured in powers +6D, +3D, +1D, -1D, -3D, and -6D using NIMO TR1504 (Lambda-X, Belgium). All lenses were measured in phosphate buffered saline across 8 mm optic zo...
متن کاملPower profiles of multifocal contact lenses and their interpretation.
PURPOSE Many contact lens (CL) manufacturers produce simultaneous-image lenses in which power varies either smoothly or discontinuously with zonal radius. We present in vitro measurements of some recent CLs and discuss how power profiles might be approximated in terms of nominal distance corrections, near additions, and on-eye visual performance. METHODS Fully hydrated soft, simultaneous-imag...
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PURPOSE The aim was to assess visual performance after PureVision high addition multifocal contact lens (PM) fitting through contrast sensitivity measured under different illumination levels for both distance and near. METHODS In a cross-over study, 20 presbyopic patients were randomly assigned to PM or spectacles. Near contrast sensitivity was measured with the Vistech VCTS 6500 system. ...
متن کاملMultifocal Intraocular Lenses
To the Editor: I commend Munoz et al on their well-designed and well-conducted study on the clinical effect of a combination of multifocal intraocular lenses (MIOL) including the newest rotationally asymmetric MIOL, which appeared in the March 2012 issue of the Journal of Refractive Surgery.1 They found that contrast sensitivity was comparable to that achievable with a monofocal implant and, re...
متن کاملMultifocal intraocular lenses.
This article reviews clinical and optical data for three unique lens designs: the ReSTOR diffractive intraocular lens (IOL), the Vision Membrane, and the ReZOOM refractive multifocal IOL.
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ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 2018
ISSN: 0816-4622,1444-0938
DOI: 10.1111/cxo.12575