noun
definition
Spectacles with corrective lenses that have three different powers per eye.
Examples of trifocals in a Sentence
Trifocals are similar to bifocals and also make a suitable fishing sunglass.
Progressive lenses are sometimes referred to as "lineless bifocals" but they really work a lot like trifocals.
However, if you need bifocals, trifocals, progressive bifocals (especially these), it could be hard to fit your prescription into such an abbreviated frame and lens combination.
They offer something for each walk of life, from fashion-conscious smaller frames to larger frames for ophthalmologic patients whose eyewear may require bifocals or even trifocals.
You probably won't need anything this extravagant just for fishing, but it's available if you do (or if you plan to take your fishing glasses and use them for other activities for which trifocals work best).