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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] People ...
A bifocal lens with areas of differing magnification Bifocals with separate lenses. In this case, the Swedish ethnologist Jan-Öjvind Swahn [].. Bifocals are eyeglasses with two distinct optical powers correcting vision at both long and short distances.
Adjustable focus lenses, like single-focus lenses, also reduce image-jump and spatial distortion in the field of view associated with traditional multi-focal lenses. Additionally, the ideal near-vision correction can be achieved with precision, because the variable lenses emulate the focusing action of the youthful (non-presbyopic) eye.
The elongated zone of focus is intended to prevent the overlapped out-of-focus images of the multifocal lens which cause the halo effect. When matched correctly to the eye, these lenses are intended to have little effect on distance vision, and improve middle distance and near vision.
Presbyopia can be corrected using glasses, contact lenses, multifocal intraocular lenses, or LASIK (PresbyLASIK) surgery. [2] [7] [4] The most common treatment is glass correction using appropriate convex lens. Glasses prescribed to correct presbyopia may be simple reading glasses, bifocals, trifocals, or progressive lenses. [4]
The brand advises removing eyeglasses, contact lenses and false eyelashes before using the massager. The massager's 180 degree foldable, compact design makes it convenient for travel, and the ...
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