bifocals

• Существительное, обозначающее очки с двумя различными оптическими силами: одна для видения объектов на расстоянии, а другая для видения объектов вблизи.

A noun referring to eyeglasses that have two distinct optical powers, one for seeing objects at a distance and the other for seeing objects up close.

irregular plural

1. Eyeglasses with two focal lengthsB2formal

   Spectacles that have lenses with two distinct optical powers, one for seeing distant objects and the other for reading or close work.

   Очки с двумя фокусными расстояниями

   • My grandfather wears bifocals to read the newspaper and watch television.
   • The optician recommended bifocals for her presbyopia.
   • He switched from reading glasses to bifocals for convenience.