Definition of Bifocals. Meaning of Bifocals. Synonyms of Bifocals

Here you will find one or more explanations in English for the word Bifocals. Also in the bottom left of the page several parts of wikipedia pages related to the word Bifocals and, of course, Bifocals synonyms and on the right images related to the word Bifocals.

Definition of Bifocals

Bifocal
Bifocal Bi*fo"cal, a. [Pref. bi-+ focal.] Having two foci, as some spectacle lenses.

Meaning of Bifocals from wikipedia

- Bifocals are eyegl****es with two distinct optical powers correcting vision at both long and short distances. Bifocals are commonly prescribed to people...
- rounded bifocals and D segment bifocals, that are selected for functional differences as well as the visual demands of the patient. Bifocals allow people...
- plastic aviators. Adjustable-focus eyegl****es might be used to replace bifocals or trifocals, or might be used to produce cheaper single-vision gl****es...
- to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their...
- Gl****es prescribed to correct presbyopia may be simple reading gl****es, bifocals, trifocals, or progressive lenses. People over 40 are at risk for developing...
- granted patents on two forms of bifocals which become commercially standardized as the "cemented" and "perfection" bifocals. Both had the serious faults...
- March 2016). "Page Two: 'I Got Vision, and the Rest of the World Wears Bifocals'". The Austin Chronicle. Retrieved 23 March 2021. Brody, Richard (30 July...
- focus on close objects) is ****ociated with Down syndrome, which may mean bifocals are indicated. In keratoconus, the cornea progressively thins and bulges...
- the water. Its aquatic larval stage was the first ever recorded use of bifocals in the animal world. The beetle uses in its prin****l eyes two retinas...
- archaeologist André Marek; and his son Chris, discover a lens from Johnston's bifocals and a note begging for help, although both date over 600 years old. ITC...