Sentence Examples

  • One upgrade to consider is a trifocal lens, which will allow you to more easily monitor your speed and see things that are at those in-between distances (not too far away, or less than arms' length).
  • This can be corrected with a higher diopter measurement for glasses or the adoption of bifocal or trifocal lenses as needed.
  • Trifocal lenses are, as mentioned above, offer one more step between map reading and looking into the distance for driving.
  • Improving upon the bifocal and trifocal concepts, a new lens called Varilux was born.
  • Inventor John Hawkins created the trifocal lens.

Also Mentioned In