Definition of bifocal in English:

bifocal

Line breaks: bi|focal
Pronunciation: /bʌɪˈfəʊk(ə)l
 
/

adjective

Denoting a lens having two parts each with a different focal length, one for distant vision and one for near vision.
More example sentences
  • The multiple vision lenses include bifocal lenses for near and distant vision.
  • Three different designs for bifocal contact lenses exist: simultaneous, concentric and alternating vision.
  • Alternatively, some people use varifocal or bifocal lenses in order to see objects clearly that are both close up and far away.

noun

(bifocals) Back to top  
A pair of glasses with bifocal lenses.
More example sentences
  • I wear bifocals or reading glasses - can I still wear contact lenses?
  • He put on a pair of glasses with clear, thick lenses that looked like bifocals.
  • This new refractive procedure is capable of reducing or even eliminating the need for bifocals or reading glasses for certain categories of patients.

Definition of bifocal in:

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