Description
Progressive lenses perform the same job as bifocals and trifocals, but in a different way. They work around the dividing lines of bifocals, which was a known inconvenience glasses wearers dealt with for many years.
Overall, progressive lenses offer the same fields of vision correction but without the lines. Transitions from “near” to “intermediate” to “distance” correction are much smoother.
The downside? The actual visual field within progressive lenses is smaller than that of bifocals or trifocals. This may help to explain why we still see many older folks wearing trifocals as opposed to progressive lenses.
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