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An almost invisible small bifocal. I use this often for my golfing clients and for shortsighted people who usually take their specs off to read. The bifocal is small and fitted very low so there is no difficulty with walking.
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A general-purpose progressive (multifocal). Multifocals take some getting used to, but they don't have lines or a power jump like a bifocal. Their biggest benefit compared to a bifocal is the clear vision in the arms-length zone, which you need to see your dashboard, computer screen, shelves and wall displays. You'll appreciate your multifocals in the car, at the library, in galleries and in shops. General purpose progressives give a wide field of view for distance viewing and have a smaller field of view for reading.
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