Bifocal lenses | 合法醫療器材資訊網

2013年12月25日 — In eyeglasses, bifocal lenses contain two different prescriptions: an upper section to allow for distance vision and an additional power on the ... Read More

Bifocals contain two lens powers; trifocals have three. Progressive multifocal lenses gradually change in power from the top half of the lens to the bottom, and thus ... Read More

With bifocal eyeglasses, this mechanism works because the lenses stay in place even as your eye moves. Unlike soft multifocal contact lenses (which move with ... Read More

2019年10月22日 — Bifocal eyeglass lenses contain two lens powers to help you see objects at all distances after you lose the ability to naturally change the focus ... Read More

Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, ... Read More

2020年5月13日 — What are Bifocal Lenses? ... Bifocal reading glasses feature distance vision correction at the top half of the lens and near vision correction at the ... Read More

Yes - they work for presbyopia. Bifocal lenses combine two prescriptions into a single pair of glasses. The top part of the lens corrects distance vision, and the ... Read More

2019年12月14日 — Bifocal lenses are lenses with lines separating two different prescriptions. There is a distance prescription on top and a reading distance on the ... Read More

2021年5月10日 — How do bifocal lenses work? ... Bifocal lenses correct nearsightedness and farsightedness in one pair of glasses. The top of the lens contains a ... Read More