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58–60: 28–36.7: Proclear 1-Day, Proclear EP, Proclear 1 day Multifocal, Proclear Multifocal Toric, Biomedics XC, Aveo Omafilcon B: 62: 21.3–52.3: Proclear Sphere, Proclear toric, Proclear toric XR, Proclear multifocal, Proclear multifocal XR, Proclear multifocal toric Vasurfilcon A: 74: 39.1: Precision UV Hioxifilcon A: 59: 28
They are also known as multifocal lenses, progressive addition lenses (PAL), varifocal lenses, progressive power lenses, graduated prescription lenses, or progressive spectacle lenses. History [ edit ]
Multifocal lens may refer to: Progressive lens, used in eyeglasses; Multifocal intraocular lens; Multifocal diffractive lens, a diffractive optical element used with ...
A multifocal diffractive lens is a diffractive optical element (DOE) that allows a single incident beam to be focused simultaneously at several positions along the propagation axis. [1] Example of multifocal peak intensity distribution along optical axis.(Courtesy of Holo/Or) Intensity distribution of multifocal lens 5 foci in Z-X plane
People who have a multifocal intraocular lens after their cataract is removed may be less likely to need additional glasses compared with people who have standard monofocal lenses. [2] People receiving multifocal lenses may experience more visual problems, such as glare or haloes (rings around lights), than with monofocal lenses. [2]
The aim of an accurate intraocular lens power calculation is to provide an intraocular lens (IOL) that fits the specific needs and desires of the individual patient. The development of better instrumentation for measuring the eye's axial length (AL) and the use of more precise mathematical formulas to perform the appropriate calculations have significantly improved the accuracy with which the ...
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