Bifocal substitute: These are eyeglass lenses with a continuous grind so no line is visible. They offer a large distance and near area for correction and a narrower central band of intermediate clarity. They cost a little more but offer a cosmetic and sometimes optical advantage for those in the presbyopic age.
Answered 4/10/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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