What’s the Difference between Bifocals, Progressive, and Transition Lenses?
Three kinds of lenses that can seem similar are bifocal lenses, progressive lenses, and transition lenses. The difference between these three lenses are:
Bifocal lenses contain two different prescriptions. These prescriptions are divided by a visible horizontal line across the lens.
Progressive lenses also have two different prescriptions. However, in progressive lenses, the horizontal line used in bifocals is not present; instead, the two areas are blended smoothly.
Transition lenses darken when exposed to sunlight, but become clear when you’re inside. […]
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