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Bifocals are eyeglasses with two distinct optical powers correcting vision at both long and short distances. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia , hyperopia , and/or astigmatism .
Lensless glasses first became popular in Japan in the 1990s. The trend died out, but has resurged recently in China and Taiwan. [citation needed]Advantages of lensless glasses are that they do not fog or reflect, and there is no lens that will touch long eyelashes and eyelash extensions.
These bifocals are upside down as they rest on the surface. The add segment of the lens for near vision is the D-shaped area. A bifocal is a lens with two sections, separated by a line (see image to the right). Generally, the upper part of the lens is used for distance vision, while the lower segment is used for near vision.
Man with glasses. A woman with glasses. Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
After that, he appeared in television commercials for a brand of bifocals termed "Inviso No-Line Glasses." Death. John Hamilton died on October 15, ...
As of 11 a.m., there were no reported injuries, according to Alex Haglund, a spokesman for the Washington County Emergency Management Agency. He said emergency workers assisted at least one person ...
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