The lens which has got two powers, one is for distance vision (DV) and another is for near vision (NV). The term itself means that it has two focal point.
Availability:
- CR 39 ( D bifocal, Kryptok bifocal, Executive bifocal)
- Lite wear D bifocal (1.591)
- Seiko D bifocal (1.60, 1.67)
- Rodenstock Colormatic extra D bifocal ( 1.52)
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