0 glasses with lenses that are divided into two parts. The upper half is for looking at things far away and the lower half is for reading or for looking at things that are near. --
1 glasses with an upper part for looking at things far away and a lower part for reading or looking at things that are near --
The optician gave the man ordinary spectacles but on the prescription form he wrote "bifocals".
In 1982, on the other hand, the average price of a pair of old-fashioned style, private, single-vision glasses was £43 and £57 for private bifocals.
Have bifocals, and then we can take the long and the short view.
He has to make certain, if you wear bifocals, that the division between the vision is in the right position.
For the first time, bifocals are now to be charged extra—another imposition on the low-wage earner.
A pair of bifocals does not cost as much as two pairs of glasses and two pairs of frames.
These needs are sometimes met conveniently by bifocals.
The consultants enclosed a typical prescription for a pair of bifocals.
