Noise sensitivity may develop as a result of an abnormality in the middle or inner ear. Trauma to the ear may cause noise sensitivity. Noise sensitivity may be present with migraine headaches. Noise sensitivity may occur as a side effect of certain medications. Noise sensitivity may occur as a result of an ear infection. People with misophonia find it impossible to tolerate certain sounds.
Equal division lenses, segmented bifocals and blended lenses â also called seamless or invisible bifocals â are three main types of bifocals. Equal division bifocal glasses feature lenses cut in two distinct halves, with the magnification part on the lower half and the long-distance lens on the upper half. The initial version of the equal division lenses, called the executive cut, had a visible horizontal line directly across the lens.
There are two options for people who need both distance and near vision corrected...multifocal lenses and monovision. Multifocal contact lenses or bifocal contacts are soft, disposable contact lenses which correct distance and near with each eye.They are similar to bifocal glasses because both eyes are corrected for both distances but the design is very different.Monovision means one eye is corrected mainly for distance vision only and the other is corrected mainly for near vision only.ultifocal Contact Lenses Multifocal contact lenses come in many different brands and each is designed a little differently. Soft lenses continuously move and rotate on the eye and when the eye moves so does the lens so the design is not like a traditional bifocal with distance on top and near at the bottom.