bifocals

listen to the pronunciation of bifocals
Englisch - Englisch
spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses
Double lenses; the top half contains the distance prescription, and the bottom half is the near prescription Most often found in cases of presbyopia or focusing disorders
Eyeglasses incorporating two different powers in each lens, usually for near and distant corrections
{i} eyeglasses which have two focal areas on the lenses
The form bifocal is used as a modifier. Bifocals are glasses with lenses made in two halves. The top part is for looking at things some distance away, and the bottom part is for reading and looking at things that are close. Mrs Bierce wears thick bifocal lenses. special glasses with an upper part made for seeing things that are far away, and a lower part made for reading
Corrective lenses that have two powers of correction Typically the majority of the lens is corrected for distance vision while a small are is corrected for near vision Bifocals and trifocals are normally prescribed for individuals with presbyopia
Eyeglasses that incorporate two different powers in each lens, most of the time for near and distance corrections
Eyeglasses incorporating two different powers in each lens, usually for near and distance vision corrections See Prescription Eyewear in Eye Care Encyclopedia See General Eye Care in Free Eye Tests
Eyeglasses or contact lenses that incorporate two different powers for near and distance corrections
bifocal
Having two focal lengths
bifocal
1 : having two foci 2 : pertaining to the compound spectacle, which contains a smaller lens for near vision placed below the center of the larger lens, which is for distant vision 3 : bifocal glasses
bifocal
Lenses of eyeglasses that have two distinct areas of focus The prescription in the top portion helps to see distant objects while the prescription in the bottom portion of the lens helps to see near objects There are many styles of bifocals, such as flat tops, progressive and even double bifocals
bifocal
The simplest type of lens that gives the wearer more than one focal length --- two The top of the lens provides clear vision at distance (infinity) and the bottom "reading add" (or "segment") gives you clear vision at a reading distance For some people we make bifocals that have focal lengths other than infinity and reading distance, but not often
bifocal
a lens that is designed with two different prescription areas to correct for both near and distance vision
bifocal
Having two foci, as some spectacle lenses
bifocal
having two foci; "bifocal eyeglasses
bifocal
Divided into two parts, one of which corrects for distance vision and the other for near vision
bifocal
Having one segment for near vision and one segment for far vision
bifocal
A type of spectacle or contact lens design that includes two focal areas: one for near, one for distance
bifocal
having two foci; "bifocal eyeglasses"
bifocal
{s} having one portion that corrects for near vision and one for far vision (of eyeglasses)
bifocals

    Silbentrennung

    bi·fo·cals

    Türkische aussprache

    bayfōkılz

    Aussprache

    /ˈbīfōkəlz/ /ˈbaɪfoʊkəlz/

    Etymologie

    () From bi- + focal (see focus), coined in 1824 by John Isaac Hawkins, inventor of trifocals. When the concept of bifocals was originally conceived by Benjamin Franklin, he called them double spectacles.
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